LT163 - Analysis of UV Absorbers in Cosmetic Products

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In this note, it is shown the analysis of UV absorbers in cosmetic products.
UV absorbers contained in cosmetic products are compounds that prevent the skin from being penetrated and burned by UV rays by absorbing the energy of UV rays and converting it into thermal energy.
The compounds are analyzed below. They are used in several products commonly available in the market with sunscreen formulation such as cosmetics, hair care products, and perfumes.
In this note, 8 compounds of UV absorbers were analyzed by gradient elution. The results show an excellent separation of the compounds.

Compounds

1-(4-tert-Butylphenyl)-3-(4-methoxyphenyl)-1,3-propanedione
2,2',4,4'-Tetrahydroxybenzophenone
2,2'-Dihydroxy-4,4'-dimethoxybenzophenone
2,4-Dihydroxybenzophenone
2-Ethylhexyl 4-methoxycinnamate
2-Ethylhexyl salicylate
2-Hydroxy-4-methoxybenzophenone
Ethyl 4-aminobenzoate