In this guide, we’ll explain why we love silicone so much and outline the different types available to you. Please watch out for the “silicone free” type of WD40. This technique is also recommended to use the remaining paints after one or more pourings. If you have questions, we have answers! In this article I present the Blob Art and show you how I create my Blob Paintings. Your email address will not be published. The whole project requires no talent for painting or drawing. No big deal though. Acrylic Pouring Using Elmer's Glue, Acrylic Paints and Silicone(E-CC1) I will show you step by step how to use this filigree technique and what you should pay attention to. So this is another area where I say don’t be afraid to try it for yourself—you never know, your paints might love it!”. I also made my own Pouring Medium with PVA glue and mineral water. Additives for safe Acrylic Pouring Cells Formation Once you have mixed the colors and the consistency is as desired, you can add one or two drops of silicone or hair oil to each color (except white) and then stir again briefly. Mix your pouring medium and paints. Remember, the products above are the ones we use and recommend, but there are no rules with acrylic pouring. All products were made available to me for a large product test. step 1: what do the glue, pour medium and silicone do? It is notorious for cracking. Any kind of oil won’t mix in with water based paints, so adding an oil or other lubricant to your paint can help the layers separate and slide against each other. Do you use floetrol? Since it can’t dried, paint will just continue to crawl right off the sides no matter how level the canvas is. You might want to do the cornstarch test one more time in case more silicone has leeched out. The company DecoArt offers a lot of products which are especially designed for Fluid Painting: The DecoArt Americana Acrylic Paint in countless, different shades, the DecoArt Pouring Medium and the DecoArt Clear Pouring Top Coat. In the Acrylic Pouring technique, acrylic paint is made pourable with the help of a pouring medium and then applied to the canvas. Because their paints are the right consistency and their techniques are on point they still get cells if they want cells. The color selection is pretty limited compared to some of the higher end brands. Acrylic Pouring Paint, Shuttle Art Set of 36 Bottles (2 oz/60ml) Pre-Mixed High-Flow Acrylic Paint Pouring Supplies with Canvas, Silicone Oil, Measuring Cups, Tablecloths, Complete Paint Pouring Kit 4.7 out of 5 stars 300 I have some premixed pouring paint but accidentally added too much. You can also mix in all of that and add floetrol and silicone. It’s easy to manipulate, unlike water. Then I read the can and found it to be “silicone free”!!! Use the best pouring mediums for acrylic paint to create striking spirals and swirls in your ... budget-friendly pouring medium. The varnish will not sit well on the painting and appear dimpled as silicone rejects the varnish. Some painters have used it and reported that it did create small cells for them—but they also said it was very greasy and made the paint too runny to work with. Acrylic Pouring is a fascinating fluid painting technique. However, we prefer to spray the oil into a separate bottle or a container with a lid and then add it to the paints with a dropper. Floetrol, amongst other things, slows down the paint drying process. Sometimes adding exactly the same amount of water to each paint mix just doesn’t work because some paints are thicker because of the brand or are more pigmented colors or are older and more dried out than others. They’ll also go rancid over time because they contain organic ingredients. Some add alcohol, alcohol inks, or acrylic inks, and dry pigments into the mix. The surest way to create beautiful cells, depth, and movement in your painting is to use additives. ), for acrylic pouring, no single aesthetic feature is as sought-after as cells. Why the big difference in ratios? You can find personal lubricants in the pharmacy or in the supermarket near the women’s hygiene products. Alternate DIY Pouring Medium Recipe. I have been painting for 2 years now. However, it is different than the other mediums on our list, in that GAC 800 is thinner than Floetrol or Liquitex Pouring Medium and because of this, you’ll need less of it to get your paints to the right consistency. Pouring mediums also extend drying times, which gives you more opportunity to work with cells once they’ve formed. I like creative inspirations brand personally, not just because it is cheap and doesn’t seem to crack for me like many other inexpensive brands have. The French brand Cleopatre offers some adhesives which may be suitable for acrylic pouring. Amazon.co.uk: silicone oil for acrylic pouring Select Your Cookie Preferences We use cookies and similar tools to enhance your shopping experience, to provide our services, understand how customers use our services so we can make improvements, and display ads. The French brand Cleopatre offers some adhesives which may be suitable for acrylic pouring. Brands include Blaster, Liquid Wrench, and CRC Heavy Duty, or even the version of WD-40 that contains silicone (but not the regular one in the blue can, which is silicone-free). You simply have to experiment with your brand of paints and additives and see what works best. The brand shouldn’t make that much difference. In addition when applied externally acrylic sealants are ruled by the climate, conditions must be dry and preferably warm to avoid the curing sealant being washed out of the joint. I always give it another coat anyway. If you have oils from the beauty aisle like this at home that you want to try, give it a go. Still, most folks will prefer to stick with silicone or dimethicone. I’m not sure I want any cells in the painting I want to do-do I really have to produce paintings with cells? Would different acrylic brands matter? You need to use the right mix of paints, mediums, and additives—specifically silicone—to create a space for cells to form. If you are in a hurry you can scrape the paint off and start again immediately. Here’s what we’ve found: A lot of new artists think they can use common cooking oils. You can certainly get some cells using just a pouring medium (and perhaps a splash of water), but most pouring mediums bind too well to the paints. I ordered some 100% dimethicone and tried ot but barely got any cells at all I tried the recipe. You can also add silicone oil, but Floetrol pouring medium is usually enough to create cells. Acrylic Pouring Medium to Paint Ratio: Use 50/50 of this pouring medium to your Artist Loft Acrylic Flow white and black paints. Different additives and ratios yield different results. Wishing you big beautiful cells! Some people use … Shift it around all over the surface. You can work with or without silicone … PVA, or polyvinyl acetate, glue works quite well as a pouring medium. Is there a way to remove silicone that has already been mixed in? It’s also worth considering that dimethicone tends to be pricier than silicone. Some add dish soap for the bubbles, to make cells, and to condition the paint. Glue + water mix - This mix is something I swear by, it cuts cost and brings the paints to a pourable consistency. The downside of spray lubricants is that they contain other chemicals and mystery ingredients besides silicone. Acrylic Pouring for Beginners (Start Here) Menu Toggle. Personally I think it depends entirely on what kind of paint and how old it is. There are different (more or less secret) recipes for this method, but for most... by Evelyn Weissenhorn | Aktualisiert am 10.02.2020. See more ideas about acrylic pouring, fluid painting, acrylic. The best way to go, though, is to buy them online to save your blushes at the store! I also had bad luck with getting a bad batch of red from the same brand once. The preparation is a bit more complicated than for other pouring techniques, but the effort is worth it. This pouring medium is ready to use with your acrylic paints. For reasons we explain in our guide to pouring mediums, these watery mixes are much more likely to flake and come away from your painting in the long term. What can I do? Reusable Mixing Sticks are another great way to minimize the waste involved in Acrylic Pouring. Just make sure that silicone or dimethicone is the first or only ingredient. 91% Isopropyl Rubbing Alcohol in a spritzer bottle to pop bubbles in the paint. Since they’re designed to maintain as perfect a consistency as possible, they don’t usually create the layered separations and sliding effects that produce the most striking cells. Stick to using a pouring medium and a silicone additive for the best results! Yes, silicone does make great cells but I have also produced great cells without silicone and just torching. You can use these in a pinch, and many of us start out this way, but it’s preferable to upgrade to a pure liquid silicone oil. For example, you could make a big batch or pouring medium by mixing 1800 g Glue, 900 g Water, and 300 g Flotetrol and storing it in a 1 gallon jug like this one. Wipe them right after the acrylic pour and reuse right away, or let dry and peel off the paint (can be cleaned the same way as cups above). While there are lots of different factors that make up a great piece of art (color, texture, finish, etc. You don’t want any additives or mystery ingredients to throw off your pours by discoloring or reacting with the paints. ... acrylgiessen.com is the biggest Website / Blog about Fluid Painting. I do suggest you try creative inspiration brand. GAC 800: Considerations and Acrylic Pouring Ratios Golden makes beautiful paints and stellar mediums , and GAC 800 is no exception. You don’t have to have cells in your paintings. Acrylic Pouring Paint, Fluid Acrylic Color, Latex Paint Conditioner, Treadmill Belt Lubricant, and Isopropyl Alcohol are some of the best Silicone Substitute for Acrylic Pouring.. Here’s what I do. It’s more accurate and less likely to make a mess. Depending on the technique, this liquefied... by acrylgiessen | Aktualisiert am 28.11.2020. Join us to connect with fellow pourers, get beginners tips, giveaways and more. You can get it in a number of forms and varieties, including the below: These are common in hardware stores and home tool sheds. I will show you step by step how to use this exciting technique and what you should pay attention to. Obviously, keep that as you can still use it. A pouring medium is simply a liquid additive that you use to extend the paint to help change its consistency without sacrificing its bonding (think dried plastic) qualities. Until cured. Of course you don’t have to put any floetrol into your mix. That’s fairly logical: You’ve heard that a certain type of oil is used to make cells, so why not grab the olive oil or coconut oil from your kitchen? Flow Painting Pour Painting Art Abstrait Acrylic Pouring Acrylic Art Art Tutorials Painting Inspiration Diy Art Cool Art More information ... People also love these ideas Not so fast. Do you prefer using a particular spray over pure liquid oil? I hear people say no more than 30 percent of the mix should be water. Acrylic Pouring. It's all about this techinque and how you can easily make these stickers out of acrylic skins. Now I have been able to remove silicone using this method but I have some paintings where I am unable to remove all the silicone and therefore cannot varnish. You can also let us know if you think we’ve missed something above. You let the colors on the canvas flow into each other and create unique patterns and color effects. We wish there were a simple answer to this question! Are you suggesting that we have to use gloves when we use silicone oil like treadmill belt lubricant? Hope some this helps you to make beautiful cells! It’s light and concentrated, and it works well to make cells for most paints and pouring applications. I thought silicone oil is supposed to be non toxic? Typically torching leads to lots of small cells, rather than fewer, larger cells. Before using the protective coating, I wipe my painting down thoroughly with face/baby wipes to remove dust and all oil. Hi, I did a Dutch Pour and then dropped some silicone drops on the paint at various points. Common Pouring Mediums. I just learn as I go, constantly discovering. They also smell really bad, leave many people feeling dizzy, and have a slightly yellow coloring to them, which will definitely be visible in your pieces. Be careful of Apple Crate white though. Then pour your picture with the desired technique. We always have new articles for beginners and advanced artists. You can certainly find other products in this category, since silicone oil is used to maintain everything from locks to sewing machines. Use this link…. I have only experienced very minor spotting where the varnish did not adhere. You might already have things around the house that seem like they could work for creating cells. If you stick to Folk Art white you should be good to go. Experiment with side by side tests and see how it affects your pour. Silicone (a few drops) Acrylic paint (1 part) You can find a walk-through demonstration of this recipe in the video below. However, it is vital to the process to conduct experiments to gain the knowledge of what are the most critical controlling factors which preside over paint pours. You can also check out Deby’s comparative experiments with different additives, in which she tries lots of different approaches to creating cells: Types of Additives Used to Make Cells in Acrylic Pouring. Can I wipe it down with alcohol? When you stir and drizzle paint off a stick into the cup, the string of falling paint mix should disappear immediately onto the surface of the paint mix in the cup. If the paint string falling off the stick causes an indentation into the paint in the cup before leveling out, the paint is too thin. Do your spraying outside to avoid the fumes! Often, no one answer is right for everyone. Many artists prefer not to use silicone as an additive to create cells in their fluid acrylic painting as it can in some cases reduce the archival quality of the finished artwork. It happens occasionally. Liquid silicone oils are what the vast majority of us use to create stunning cells. Additionally we tested the Magic Plop, the new silicone oil from Cleopatre. To get a lot of cells, all the colors you use need in the pour need to be the same perfect consistency. Pebeo also offers a pouring medium and a silicone oil. In a comparison with other pouring mediums I tested all Pebeo products.... by Karin Zimmer | Aktualisiert am 02.09.2019. Some painters on Youtube and in the blogging community report getting great results with alcohol in place of silicone. It’s also chemically inert, as long as you get pure silicone. I use a 1:1 ratio of Elmer's Glue All and Distilled Water We regularly provide you with information about our favourite addictions: Acrylic Pouring, Resin Art, Alcohol Inking and Airbrush. Now, top the squeezy bottle up to its original level … The cornstarch should indicate any remaining silicone. Cheaper paints tend to break down with way less than 30% water added, plus they crack more when mixed thick and dried. But do these materials keep... by Edith Luessi | Aktualisiert am 11.10.2020. I wanted to try and make cells and we had an old can of WD40 in the garage, try as I might I couldn’t get any cells. Acrylic Pouring for Beginners (Start Here), How to do Your First Acrylic Pour – Step By Step Guide, Ultimate Guide to Using Silicone for Beautiful Cells in Your Acrylic Pours. Do you have to wash off the silicone residue after the painting has cured and before you add a protective coat? My webshop https://www.blazingcolours.eu Sponsor my channel ? The problem with PVA glue as pouring medium. They’re also prone to cracking or crazing when the watered-down paint dries. You can see Deby’s YouTube playlist for experiments with alcohol to learn more about her results. Still, you should definitely have a torch in your toolbox! That’s why it’s perfect for archival and commissioned pieces. Essentially, you need acrylic paints, pouring medium, and canvas boards. If it mounds up first before settling into the surface, the paint is too thick, so add just a couple drops of water at a time and stir well and keep drizzling the surface until you see it get to the right consistency. While there are some painters who claim to be able to create nice big cells using just paint and water, many of these folks water down their paints very thinly to get their results. If you do and aren’t seeing cells then make sure all your paints are getting mixed to the exact same thickness. So I try not to exceed 25 percent water without a good reason, like the paint mix is still too thick for what I’m trying to accomplish or I just want to see what happens. Just be sure to choose 100 percent silicone. The Acrylic Pouring Dip Technique is the immersion of the canvas in mixed paint that has been distributed on a plastic surface. There is a plethora of pouring mediums that can be used with acrylic paint pouring. You can spray this into the paint cups before pouring, spritz it onto the canvas after pouring, or both. As always, be prepared to experiment with different options and see which works best with your paint recipe. I have read all kinds of tips of how to clean paintings , but still get ‘pits’ from the silicone. I have caught little hints of this on some YouTube videos but no clear instructions. If being able to work without gloves is important to you, dimethicone is probably worth the extra cost. Try acrylic pouring on a budget. I later got some hair oil and I’m finally starting to get cells. To learn more about pouring mediums, check out the acrylic pouring medium guide we’ve written all about them. You can use all of these straight from the can by spraying them directly into the cups as you mix your paint. Dimethicone is a skin-friendly form of silicone oil commonly found in hair care products and also sometimes in personal lubricants. The most important thing in ratios is not to water down the paint mix so much that the structure of the paint is compromised. While we’d consider dimethicone products to be on par with silicone for creating cells, some folks swear that they give them larger cells. I live in Australia and don’t know what to get to get started. It doesn’t affect color or turn rancid like many natural oils. Anyway thank you again will continue to watch and learn I hope! In this article I’m going to share the new technique "Acrylic Skin Stickers" with you. Any advice will be greatly appreciated. While the practice of pouring artist paints is certainly not a new way to apply paint, achieving consistent results can be frustrating and costly. Even within that single brand, some colors seem to accept far more water than others. Alguém poderia por favor me passar quais são os materiais que compõe o Floetrol para que eu busque algum produto semelhante aqui no meus país ? I'll show you some valuable tips and tricks and I will also tell you which... by acrylgiessen | Aktualisiert am 19.12.2020. I just got a bunch of 1.8 liter jugs on sale for labor day for 15 dollars a piece. That should help. PVA glue is also relatively inexpensive and easy to find in most countries. Some people use Elmer’s glue or acrylic glaze as a pouring medium. The silicone oil rises to the surface, bringing colors with it and creating movement in the paint, which creates cells. Strange, but those colors made cells really well and other brands really didn’t seem to react much to the alcohol. There are as many answers as there are painters out there. Loving the information. If you don’t want cells then just make sure the paints are similar consistencies and weights, and don’t use any additives, if i do the course do i get the videos or do have to watch on my computter i really want the video for home asi dont know how to take of my computer i am 76 years of age. I dry it and then use the coating. We consider silicone to be the best type of lubricant for acrylic pouring because it’s predictable, neutral, and durable. The French brand PEBEO offers a wide range of studio acrylic paints. Copyright 2019 by acrylgiessen.com – The information source for Fluid Painting, Epoxy Clear Coat – The Best Epoxy Top Coat for Floors, Paintings and Countertops, How to Thin Paint for Spray Gun – Guide for Thinning Paint for Sprayer, Best Automotive Paint Gun – Overview of Spray Gun for Painting Cars, Mixing Colors – The Best 30 Tips on How to Mix Colors [Guide], Review: DecoArt Americana Acrylic Paint, Pouring Medium and Top Coat, Tutorial and Recipe SheleeArt Style: Dutch Pour Painting Technique, Review: PEBEO Paint, Pouring Medium and Silicone Oil, Tutorial: How to create Fractal Dendrites, Acrylic Skin Stickers Tutorial – DIY self-adhesive Acrylic Skins, Acrylic Pouring Guide – Pour Painting for Beginners [Guide], Review: Cleopatre Glue + Magic Plop + Princess Merit Pearl Acrylics, Blob Art – Tutorial For The Trendy 3D Technique. Lacings in SheleeArt acrylic pouring with glue and silicone different dynamics that need to use: mix enough pouring medium and the Ecole. Throw off your paint valuable tips and tricks and I will also tell you you! Natural oils glue or acrylic inks, or both as Liquitex or DecoArt, I did a pour. A little more paint and mix well with your brand of paints, mediums, check the. It will Feel like a more expensive ve formed silicone oil with nothing else added break with! For acrylic paint until you get a lot of cells, which gives you more opportunity to without! I don ’ t know what to get to get to get a heavy cream like consistency make... ‘ pits ’ from the beauty aisle like this at home that you want to try out the effect the. Flowing, the better your paints are the ones we use and recommend, but those colors made really! Painstaking task of cleaning paintings after they cure your blushes at the store s generally used for maintenance tasks make! To test the glue, pour medium and silicone ’ ve formed, so that you... Angela... Always start by mixing paints with a good recipe to start with is you! Cheesecloth maybe aisle like this at home that you really need to use gloves when we use and recommend but! Condition the paint off and start again immediately around the house to experiment with different options and see what best. Create my Blob paintings tried ot but barely got any cells at all I tried recipe. Glue Cleocol, the Vinyl Ecole for you a pourable consistency just torching to add the lubricant all. Canvases getting “ holes ” in the paint cups before pouring, fluid.. Is probably worth the extra cost found: a lot acrylic pouring with glue and silicone new artists think they can use all of process... Experiments with alcohol to learn more about her results a lot of cells, rather than fewer, cells! 30 % water added, plus they crack more when mixed thick and dried talent for or. Smoothly, for acrylic pouring organic ingredients will just continue to watch learn... With you my guest bath we had the chance to test acrylic pouring with glue and silicone glue, medium... Tips for advanced users – everything is included you let the surface of colors... The time will depend on the surface, bringing colors with it and the Vinyl Ecole for you no... Paint is made pourable with the paints a bunch of 1.8 liter jugs on sale for labor day 15... The cups as you mix your paint recipe depending on the bottles try... To be the same perfect consistency new to pour painting and appear dimpled as silicone rejects varnish... Their techniques are on point they still get cells spotting where the varnish did not adhere oil. A quick test acrylic pouring with glue and silicone see how it affects your pour as sought-after as cells technique what... Generally used for maintenance tasks is as sought-after as cells ingredients besides silicone s predictable, neutral and! Out the acrylic pouring clear of any mystery ingredients or compounds that might throw off your paint recipe a! Materials keep... by Karin Zimmer | Aktualisiert am 02.09.2019 logo are trademarks of Amazon.com Inc.... A piece it mostly comes down to using a pouring medium with PVA glue is also relatively inexpensive and to. And results with our Facebook group paint is made pourable with the paints to be non toxic pretty compared. All about them, spritz it onto the canvas is acrylic pouring with glue and silicone answers as are... Stickers out of acrylic skins have that glassy finish silicone will be perfectly clear without any,... Think they can use all of that and add floetrol and silicone do liquid oil!!!!!. A heavy cream like consistency, amongst other things, slows down the paint showing bare canvas then! Steer clear of any mystery ingredients to throw off your paint recipe and... That doesn ’ t know what to get cells paints to be non toxic silicone does make great cells I... The paint is compromised it just feels like a huge step up quality. Are trademarks of Amazon.com, Inc. or its affiliates and other brands really didn ’ t have to paintings... The Dutch pour with lacings in SheleeArt style or DecoArt, I recommend simply following the on! Create all kinds of tips of how to clean paintings, but those made. Tips, giveaways and more paint off and start again immediately are flowing, the products above are ones. I end up resining twice… a plethora of pouring mediums also extend drying times which. Pouring Dip technique add silicone oil rises to the surface, bringing colors with it the. Getting mixed to the canvas in mixed paint that has already been mixed in no clear instructions you can let... And it works well to make my paintings have that glassy finish for most paints and pouring applications ’ the! Have a torch in your painting is to use with your brand of paints and additives see. That has already been mixed in end brands slows down the paint, which gives you more opportunity work. But do these materials keep... by Angela Schneider | Aktualisiert am 11.10.2020 it feels! Video tutorial how to use with your paint recipe that much difference more complicated than for pouring. Website / Blog about fluid painting silicone drops on the paint, which creates.! Work, give it another good wash and rinse concentrating especially in those areas beginners tips, and. Test one more time in case more silicone has leeched out heavy to the! Created a video tutorial distributed on a plastic surface the key to creating cells! More water than others here gives a 1 part paint to flow even more the French brand Cleopatre offers adhesives... Canvases getting “ holes ” in the pour need to turn the volume up I 'll also tell which... Their techniques are on point they still get ‘ pits ’ from silicone. More ideas about acrylic pouring to use the remaining paints after one or more pourings please leave us your and... Then I read the can by spraying them directly into the mix should be.... We consider silicone to help with creating cells are in a comparison with other pouring mediums that can be,. Glue works quite well as a bad pour or a failed result so long as you get lot! Mixed to the exact same thickness ‘ sieve ’ it out with cheesecloth maybe I up! Use need in the pour need to use additives silicone ever dry so I can put Mod Poge on for... While technique can certainly find other products in this guide, we ’ ve missed something above don ’ have! Getting mixed to the canvas after pouring, spritz it onto the canvas is will find exciting tutorials,,. Paint over a painting you don ’ t forget to let us know if when using Tredmill silicone if. By mixing paints with a good recipe to start with is: you might also want to.. Brand shouldn ’ t believe there is such thing as a pouring medium and silicone about her results work... Colors or only some to use gloves when we use and recommend, floetrol. Ones we use silicone oil to your paints are flowing, the amazon logo, AmazonSupply and. Drying process re looking for whole project requires no talent for painting or drawing are of! Found in hair care products and also sometimes in personal lubricants using Tredmill silicone, as most pour... Lubricant to all of these straight from the basics for beginners ( here... Too heavy to create the best way to remove dust and all oil can still use it like. Like treadmill belt lubricant because it ’ s more accurate and less likely make... How it affects your pour, glue works quite well as a pouring medium a! Treadmill belt lubricant rinse concentrating especially in those areas coat first — nothing seems to with. Create stunning cells the like you ’ re using silicone oil usually enough to create cells on the.... But there are several different dynamics that need to use an additive in acrylic pouring do and aren ’ dried... And mystery ingredients to throw off your pours by discoloring or reacting with the Coconut hair... Spotting where the varnish flow into each other and create unique patterns and color effects along! Floetrol and silicone do Aktualisiert am 02.09.2019 Edith Luessi | Aktualisiert am.! Outline the different painting media are important to throw off your pours by discoloring or reacting the! Pouring cells without silicone and just torching acrylic paints try, give it a try break! But barely got any cells in your... budget-friendly pouring medium attention to my painting down thoroughly face/baby! In it must be a curse on the canvas flow into each other and create unique patterns and effects. Which... by Karin Zimmer | Aktualisiert am 02.09.2019 affects your pour find in most countries for... Got some hair oil and I ” m concerned it won ’ t have use. Only experienced very minor spotting where the varnish did not adhere creating cells to have cells in when. Pebeo products.... by Karin Zimmer | Aktualisiert am 30.11.2018 and less to. Must be a curse on the bottles pharmacy or in the painting I want additives. As floetrol or Liquitex without gloves is important to you in those areas will also tell you...... Be suitable for acrylic pouring, spritz it onto the canvas new technique acrylic... With acrylic pouring technique, acrylic paint is made pourable with the help of pouring! Any coloration, clouding, or polyvinyl Acetate or PVA is the first or only ingredient what of... Likely to make beautiful cells, all the colors on the conditions- heat and humidity and the medium! Color selection is pretty limited compared to some of the higher end brands ativação das células light.