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ACRYLATES/METHOXY PEG-10 MALEATE/STYRENE COPOLYMER.

Valuable CAS 68988-26-1 / OPACIFYING

This copolymer acts as both an effective opacifying agent and a significant SPF booster. It enhances the performance of sunscreens and improves product aesthetics by reducing transparency.

opacifying spf booster

Science

Utilizing hollow sphere technology, its 350nm polymer spheres increase the path length of UV light within the sunscreen film. This boosts the absorption efficiency of active UV filters and scatters visible light for an opacifying effect.


Research

High confidence
Effective range 0.1–5%
Optimal

5%

Key findings

  1. 01 Clinical use at 0.1% - 5.0% demonstrates a significant SPF boosting effect across both UVA and UVB spectra when combined with organic or inorganic filters. Related acrylate copolymers show low irritation potential even at high concentrations.

Transparency

Not commonly dusted

The Formula

Solubility
Water
Optimal pH 2 – 12
0 7 14

Stability

Supplied as a water-based emulsion, it exhibits high electrolyte tolerance and stability across a broad pH range of 2.0 to 12.0. It is specifically designed for anionic surfactant systems.

Conflicts

  • High betaine surfactant levels (can affect stability in some grades)
  • Cationic surfactants (potential for complex formation or instability)

Safety

CIR Status
Safe as used
Max tested
5%
Sensitization risk Low

Reviewed as safe for use up to 5% by the CIR Panel as part of the Acrylates Copolymers group, provided products are non-irritating. Manufacturing controls manage residual monomer levels to remain below safety thresholds.


Your Skin

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Valuable

A valuable ingredient for enhancing SPF efficacy and product aesthetics, offering broad skin compatibility with a low risk of irritation.


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