Acrylates/Palmeth-25 Acrylate Copolymer: What Is It, Cosmetic Uses, Benefits & Side Effects

Curious about this ingredient? In this article we're explaining exactly what it is and why it's used within cosmetic formulations.
Updated on: June 23, 2025
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All information on this page is verified using The Personal Care Products Council's (PCPC) INCI database. Our ingredient analyses are based exclusively on PCPC's technical data to ensure accuracy and reliability.

What Is Acrylates/Palmeth-25 Acrylate Copolymer?

Acrylates/Palmeth-25 Acrylate Copolymer is a synthetic polymer made by reacting acrylic acid with ethoxylated palm alcohol that carries about 25 units of ethylene oxide, then linking these building blocks into long chains through a process called polymerization. Because palm alcohol originates from palm oil this ingredient blends a plant derived component with lab driven chemistry, giving manufacturers a reliable thickening agent that can be reproduced consistently in large batches.

Polymers based on acrylic acid have been used to thicken and stabilize cosmetics since the 1970s. As formulators searched for versions that offer a lighter feel and better compatibility with modern actives they developed copolymers like Acrylates/Palmeth-25 Acrylate Copolymer. Its balance of water loving and oil loving segments lets it sit comfortably in both water based and emulsion systems, which explains its popularity today.

The production process starts with refining palm oil into a fatty alcohol, adding ethylene oxide to create the Palmeth-25 segment, then esterifying it with acrylic acid. The resulting monomers are polymerized under controlled heat and pH, filtered and dried into a fine powder or delivered as a pre-neutralized liquid.

You will most often spot this ingredient in lightweight moisturizers, hydrating serums, sheet mask essences, gel creams, sunscreens, foundations, hair styling gels and leave-in conditioners where it helps give products a smooth glide and a pleasing, non-sticky finish.

Acrylates/Palmeth-25 Acrylate Copolymer’s Cosmetic Benefits/Uses

This copolymer is valued mainly for one key job within a formula.

As a viscosity controlling agent it swells in water to build thickness, creating a stable texture that feels elegant on the skin or hair. By tuning viscosity it keeps oils dispersed, pigments suspended and actives evenly distributed so the product stays uniform from first use to last while also preventing runny or overly heavy consistencies.

Who Can Use Acrylates/Palmeth-25 Acrylate Copolymer

This polymer is considered skin friendly for most skin types including oily, combination, normal and dry. Because it is non occlusive and virtually weightless it does not usually aggravate oily or acne-prone complexions while its water-binding nature gives dry skin formulas a smoother feel. Sensitive skin generally tolerates it as well since it is chemically inert and used at low levels, yet anyone with a known acrylic allergy should proceed with caution.

The palm-derived portion comes from plant material and no animal by-products are introduced during manufacturing so products featuring this ingredient are suitable for vegans and vegetarians. Some consumers avoid palm-based inputs due to environmental concerns; in that case look for brands that source certified sustainable palm oil.

No research indicates that Acrylates/Palmeth-25 Acrylate Copolymer poses a risk to women who are pregnant or breastfeeding when used topically in cosmetics. This is not medical advice and anyone who is expecting or nursing should discuss all personal care products with a healthcare professional to be extra safe.

The ingredient does not make skin more sensitive to sunlight and has no known impact on the effectiveness of sunscreens or other active treatments. It is fragrance free and free of common sensitizers, which further supports its broad compatibility.

Potential Side Effects/Adverse Reactions

Side effects from topical use of Acrylates/Palmeth-25 Acrylate Copolymer can vary between individuals. The following points outline potential reactions but they are uncommon when the ingredient is used correctly by the manufacturer and most users will not experience them.

  • Mild skin irritation or redness in individuals allergic to acrylic compounds
  • Temporary stinging if applied to broken or freshly exfoliated skin
  • Eye irritation if the product accidentally gets into the eyes
  • Build-up on hair shafts leading to slight dullness if used in very high concentrations without proper cleansing

If any of these effects occur discontinue use immediately and consult a qualified healthcare provider for guidance.

Comedogenic Rating

Rating: 0 / 5

Acrylates/Palmeth-25 Acrylate Copolymer is a high-molecular-weight polymer that sits on top of the skin rather than being absorbed into pores, and it does not supply any fatty acids that could oxidize and clog follicles. Because it is primarily used at very low levels to adjust texture and has a light, non-occlusive finish, the likelihood of it trapping sebum or debris is minimal.

Bottom line: it is generally considered safe for acne-prone or breakout-prone skin. As with any ingredient, the overall formula matters, so extremely rich creams or heavy oils in the same product could still cause congestion even if this polymer does not.

Summary

Acrylates/Palmeth-25 Acrylate Copolymer is a modern, palm-derived acrylic polymer that chiefly controls viscosity. It swells in water to build thickness, keeps pigments and actives evenly suspended, stabilizes emulsions and delivers a smooth, lightweight feel without stickiness. These abilities make it handy in everything from fluid moisturizers and gel creams to sunscreens and hair stylers.

Its popularity has grown steadily because formulators love the balance of plant touch and lab precision, plus the way it pairs well with today’s minimalistic, fast-absorbing textures. You will rarely see it headlining a product, but it quietly supports tens of thousands of formulas on the market.

Safety data shows a very low irritation potential, no known hormonal effects and no photo-reactivity. Still, each person’s skin is unique, so it is always smart to patch test any new product that contains this or any other unfamiliar ingredient.

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