Ethylhexyl Methoxycylene
Ethylhexyl Methoxycylene
ETH
5/10
Concern level
Moderate concern
Ethylhexyl methoxycinnamate (octinoxate) is an oil-soluble UVB filter used in sunscreens and other cosmetics to absorb UVB radiation and help prevent sunburn. It is also used at low levels as a photostabilizer in some cosmetic formulations.
Pore-clogging
Non-comedogenic
Pregnancy
Caution
Regulatory
No data
Benefits
UV Protection
Concerns
Photosensitivity
Chemical Properties
Molecular Weight
290.4 g/molTypical Concentration
2.00% - 10.00%CAS Number: 5466-77-3
Skin Type Compatibility
dry skin5/10
oily skin7/10
sensitive skin3/10
acne prone6/10
mature skin4/10
normal skin6/10
Interactions
incompatible with: avobenzone unless photostabilized, high-heat or prolonged light exposure without stabilizers, strong oxidizing conditions
Risks & Warnings
May cause irritation or allergic reactions in some users. It has been associated with endocrine-activity concerns in EU safety review discussions, though the SCCS concluded it is safe up to 10% in sunscreen products. It does not provide broad-spectrum protection on its own and can be photolabile in some systems.
Vegan Cruelty-Free


