Supports photostability when paired with less stable filters
Lightweight, non whitening finish in finished formulas
Octisalate Description
Octisalate, also called ethylhexyl salicylate, is a salicylate ester that absorbs UVB radiation through the same general chemical family as homosalate, but is generally considered an even weaker UVB absorber on its own. This modest absorbance means it is almost always formulated as a supporting filter rather than a formula's primary active, helping a sunscreen reach its target SPF alongside stronger filters.
Research on salicylate based UV filters has found they contribute meaningfully to a sunscreen's overall photostability, since salicylates tend to resist the light induced breakdown that affects some other chemical filters, which is part of why octisalate is frequently paired with less stable filters like avobenzone.
Octisalate References
Salicylate UV Filters in Sunscreen Formulations Compromise the Preservative System Efficacy against Pseudomonas aeruginosa and Burkholderia cepacia, Cosmetics (MDPI), 2020
Ultraviolet Filters for Cosmetic Applications, Cosmetics (MDPI), 2023
Our team reviews ingredient research and uses up-to-date evidence to rate ingredients based on the categories below.
Best
Ingredients with the most rigorous and convincing evidence. These are the standouts backed by consistent findings across independent, peer reviewed clinical research.. When we call an ingredient Best, it has earned that distinction through genuine, reproducible proof that it improves skin.
Good
Reliable, well tolerated ingredients that do their job without complaint. They may not carry the headline benefits of a Best rated active, but they hydrate, stabilize a formula, or support the ingredients around them in ways that make a real difference in how a product performs and feels.
Average
Ingredients that are perfectly safe and serve a clear function, typically as an emollient, thickener, or filler, but do not offer any meaningful skin benefit beyond that basic job. Not a red flag, just not a reason to choose one product over another.
Bad/Worst
Ingredients with documented potential to irritate skin, disrupt the barrier, or trigger sensitization in some users, often synthetic fragrance, drying forms of alcohol, or certain essential oils. Not automatically a dealbreaker for every skin type, but worth knowing about before you commit to a product.
