Beheneth-25 Methacrylate Copolymer
Associative polymer thickener for O/W emulsions. Builds a flexible network of microclusters, giving creams body and a cushiony texture without stickiness.
Supporting ingredient
It gives a product its texture, stability or shelf life. It has no claimed effect on the skin, so an efficacy tier does not apply. What is known about its safety is below
Tolerability and safety
- Irritation potential
- Low
- Allergen risk
- Low
- Pregnancy
- Safe
- Suitable for
- Normal, Dry, Oily, Combination, Sensitive
About this ingredient
Beheneth-25 Methacrylate Copolymer is a synthetic associative polymer thickener with hydrophilic methacrylate blocks alternating with hydrophobic beheneth-25 (ethoxylated behenyl alcohol) chains. Mechanism. In the aqueous phase, hydrophobic chains gather into microclusters and build a flexible polymer network. The network thickens cream consistency and stabilises emulsion oil droplets, preventing coalescence. The structure breaks under shear (spreading on skin) and re-forms at rest – the formula gains a pleasant 'cream-mousse' texture, not sticky or heavy. Where applied. Modern O/W creams and serums that need a light airy feel (0.1–2%). In Spain it is in La Roche-Posay Toleriane Sensitive, CeraVe Facial Moisturising Lotion, Avène Sérénage. Safety. The high molecular weight polymer does not penetrate the epidermis, so no systemic action. CIR in 2018 considered copolymers of this type safe at cosmetic concentrations. Irritation and allergy are extremely rare. Pregnancy and lactation – safe. Used without restriction. Functional role. A formula aid, not a cosmetic active. No standalone skin benefit – it helps the formulator and improves end-product sensorics.
Frequently asked questions
Is Beheneth-25 Methacrylate Copolymer safe during pregnancy?
Beheneth-25 Methacrylate Copolymer is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Beheneth-25 Methacrylate Copolymer for?
Beheneth-25 Methacrylate Copolymer suits: normal, dry, oily, combination, sensitive.
What is Beheneth-25 Methacrylate Copolymer and what does it do in cosmetics?
Associative polymer thickener for O/W emulsions.
What's the INCI name for Beheneth-25 Methacrylate Copolymer?
The INCI name is Beheneth-25 Methacrylate Copolymer.
See Beheneth-25 Methacrylate Copolymer in a product composition right on the store page
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Similar role in the formula
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