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ETOCRYLENE.

Valuable CAS 5232-99-5 / UV ABSORBER

Etocrylene is a photostable UV-absorbing ester that primarily targets UVB and short UVA radiation, protecting skin by converting UV energy into harmless heat. It is considered a mild and non-irritating filter suitable for a wide range of cosmetic formulations, enhancing overall sunscreen efficacy.

uv absorber photostabilizer preservative

Science

Etocrylene operates as a UV-absorbing ester with a conjugated phenyl acrylate structure. It effectively blocks UVB and specific short UVA wavelengths, peaking around 300–320 nm. Upon absorbing UV radiation, it dissipates this energy as innocuous heat through a process called photoisomerization, thus preventing UV-induced skin damage. Its inherent photostability ensures it resists degradation under sun exposure, enhancing its own efficacy and contributing to the stability of other UV filters, such as avobenzone.


Research

Insufficient-data confidence
Effective range N/A
Optimal

N/A


Transparency

Not commonly dusted

The Formula

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Etocrylene is inherently photostable, meaning it resists degradation when exposed to sunlight, thereby extending the durability and shelf-life of formulations. Its versatility is further enhanced by its suitability across a broad pH spectrum.

Synergies

  • avobenzone

Safety

CIR Status
Not reviewed
Sensitization risk Low

Etocrylene is generally considered a mild and non-irritating UV filter. SkinSAFE classifies it as 'Teen SAFE', 'Lip SAFE', 'Baby SAFE', 'Irritant Free', 'Fragrance Free', 'Paraben Free', and 'Common Preservative Free'. The EWG Skin Deep database reports 'low' concerns for cancer, allergies & immunotoxicity, and developmental and reproductive toxicity. While GHS classifications indicate a potential for skin, eye, and respiratory irritation in 17.8%-18.7% of reports, these are general hazard statements and not specific to typical cosmetic use concentrations. Its FDA listing as an ultraviolet-stabilizer for PVC in food contact applications is at a maximum level of 0.3%.


Your Skin

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

Our Assessment

Valuable

Etocrylene is a valuable photostable UV filter, offering protection against UVB and short UVA without significant irritation, making it suitable for a wide range of skin types and sun care formulations.


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