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BENZOTRIAZOLYLHYDROXYPHENETHYL METHACRYLATE.

Valuable CAS 96478-09-0 / LIGHT STABILIZER

A sophisticated, reactive UV absorber designed to maintain the structural integrity and aesthetic quality of high-performance skincare. By functioning as a specialized light stabilizer, it protects delicate active ingredients from photodegradation while preventing formula discoloration.

UV absorber Light stabilizer Formula protectant

Science

This molecule utilizes a benzotriazole core to intercept UVA and UVB radiation, converting photon energy into low-level heat that dissipates without harming the skin or formula. Its methacrylate functional group allows it to covalently bond into the product's polymer matrix, creating a permanent internal shield that prevents the stabilizer from leaching or losing efficacy over time.


Research

High confidence
Effective range 0.1–2%
Optimal

0.5%

Key findings

  1. 01 Demonstrated 0.5% concentration provides superior color suppression and prevents light-induced yellowing in polymer-based systems.
  2. 02 Shown to effectively shield UV-sensitive additives in ophthalmic and topical applications within the 0.1% to 2.0% range.

Transparency

Not commonly dusted
Min. effective
0.1%
Red flag below
0.05%

Because it is a highly efficient stabilizer, it is effective at low concentrations; however, levels below 0.05% typically indicate 'label claim' usage rather than functional formula protection.


The Formula

Solubility
Oil
Optimal pH 5 – 8
0 7 14

Stability

Maintains excellent stability under standard conditions but may undergo hydrolysis in highly acidic (pH <3.0) or alkaline (pH >9.0) environments. Requires an oil phase for proper dispersion.

Synergies

  • Antioxidants
  • Acrylates Copolymer
  • UV Filters

Conflicts

  • Strong oxidizing agents
  • Strong alkaline solutions
  • Free radical initiators

Safety

CIR Status
Safe as used
Max tested
1%
Pregnancy
Safe
Sensitization risk Low

Generally regarded as safe for topical use; however, individuals with known sensitivities to acrylates or methacrylate monomers should exercise caution due to potential trace unreacted material.


Your Skin

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

Our Assessment

Valuable

An essential stabilizer for maintaining the potency and visual purity of precision skincare containing light-sensitive actives.


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