U.v. absorbers in sun cosmetics 1978.

Area of Science:

• Cosmetic Science
• Analytical Chemistry
• Dermatology

Background:

• Sunscreens utilize UV filters to protect skin from harmful solar radiation.
• Understanding the composition of commercially available sunscreens is crucial for consumer safety and regulatory oversight.
• Various chemical UV filters are approved and widely incorporated into sunscreen formulations.

Purpose of the Study:

• To identify and quantify the most prevalent UV filters in a range of sunscreen products.
• To provide an overview of the chemical UV filter landscape in the current market.
• To establish a baseline for future research on sunscreen efficacy and safety.

Main Methods:

• Spectroscopic analysis techniques were employed to identify UV filter compounds.
• Brand-name sunscreen products were procured for compositional analysis.
• Quantitative analysis determined the concentration and prevalence of identified UV filters.

Main Results:

• 2-Ethylhexyl.p.methoxycinnamate was the most frequently detected UV filter, present in nineteen brands.
• 2-Phenylbenzimidazole.5-sulphonic acid was identified in eleven brands.
• Other commonly found UV filters included 2-Ethoxyethyl.p.methoxycinnamate, 3 (4'Methylbenzylidene)D,D,L-camphor, 3-Benzylidene.D,L-camphor, and 2-Hydroxy.4-methoxy.benzophenone.

Conclusions:

• The study confirms the widespread use of specific chemical UV filters in sunscreens.
• The findings offer insights into the formulation trends of sun protection products.
• Further research can build upon this data to assess the long-term implications of these UV filters.