What Is Polyacrylate-28?
Polyacrylate-28 is a man-made polymer created by linking together small building blocks known as hydroxyethyl acrylate, sodium acryloyldimethyltaurate, sodium acrylate and tris(hydroxymethyl)acrylamidomethane. When these pieces join, they form a flexible web that is highly water loving. Because it is fully synthetic, the ingredient does not rely on plant or animal sources and can be reproduced with the same quality every time.
The cosmetic industry began turning to acrylic polymers in the late 1970s when formulators needed reliable thickeners that stayed stable over a wide pH range. Polyacrylate-28 was refined from earlier versions to give better clarity in gels and a softer feel on skin, which quickly made it a favorite in modern skincare and makeup lines.
Production starts with dissolving the individual monomers in water. A gentle heat and a free-radical initiator spark the reaction that links the monomers into long chains. Once polymerization is complete, the mixture is neutralized with sodium to balance its charge, filtered for purity then dried or kept as an aqueous gel depending on the final use.
You will spot Polyacrylate-28 in light facial moisturizers, hydrating serums, sheet mask essences, sunscreens, color-stay foundations, styling gels and even some micellar cleansers. Its ability to boost texture without heaviness lets brands create silky formulas that spread easily and stay put.
Polyacrylate-28’s Cosmetic Benefits/Uses
Formulators value Polyacrylate-28 for several practical reasons that improve the look, feel and stability of a product.
- Emulsion stabilising: It keeps oil and water phases from separating so a cream or lotion stays smooth from the first pump to the last application
- Film forming: It lays down an invisible, flexible layer on skin or hair that locks in moisture, enhances wear time and provides a soft touch finish
- Viscosity controlling: It thickens watery formulas into pleasant gels or light creams giving the product body without a greasy after-feel
Who Can Use Polyacrylate-28
This polymer is gentle enough for most skin types. Oily and combination skins appreciate its light feel while dry and mature skins like the moisture sealing film it forms. Sensitive skins generally tolerate Polyacrylate-28 well because it is non reactive and fragrance free, though anyone with a history of acrylic allergies should stay cautious.
Because the ingredient is made entirely in a lab without animal or plant derivatives it is suitable for vegans and vegetarians.
Current safety data shows no reproductive or developmental risks so products containing Polyacrylate-28 are usually considered safe for people who are pregnant or breastfeeding. This is not medical advice and anyone who is expecting or nursing should check with a doctor before starting a new product just to be sure.
The polymer does not cause photosensitivity, so it will not make skin more prone to sunburn. It also plays well with most active ingredients, including acids and retinoids, without affecting their performance.
Potential Side Effects/Adverse Reactions
Reactions to Polyacrylate-28 vary from person to person. The points below outline potential side effects that have been reported, though they are uncommon when the ingredient is used correctly in finished products.
- Skin irritation such as mild itching or tingling
- Redness or flushed appearance on the application area
- Stinging or burning sensation, especially on compromised skin
- Allergic contact dermatitis in individuals sensitive to acrylic compounds
- Eye irritation if the formula accidentally gets into the eyes
If any of these effects occur stop using the product and consult a healthcare professional for guidance.
Comedogenic Rating
Rating: 1/5
Polyacrylate-28 is a large water loving polymer that sits on top of the skin rather than sinking into pores. It does not contain oils or waxes that typically clog follicles, and the breathable film it forms allows sweat and sebum to escape. Because of this, it is considered very low on the comedogenic scale.
Suitable for acne prone or breakout prone skin.
One note: formulas that pair Polyacrylate-28 with heavy oils or butters could raise the overall comedogenic potential, but the polymer itself remains low risk.
Summary
Polyacrylate-28 serves three main jobs in cosmetics: it keeps emulsions from separating, adds body to watery mixtures and leaves a flexible film that helps lock in moisture and extend wear time. It does all this by forming a lightweight mesh of polymer chains that hold water and stabilise oil droplets.
The ingredient has become a quiet workhorse in modern skincare, sunscreens and long wear makeup. While not a buzzword on packaging, its reliable performance means formulators reach for it often when they need clear, smooth textures that feel weightless.
Safety reviews place Polyacrylate-28 in the low concern category with rare reports of irritation or allergy. As with any new product, it is wise to do a small patch test first to be sure your skin agrees with the full formula.