Open Access<p>A novel method for evaluating sun visible light protection factor and pigmentation protection factor of sunscreens</p>
Author(s) -
Sérgio Schalka,
Marcelo de Paula Corrêa,
Leticia Yumi Sawada,
Camila C Canale,
Thay de Andrade
Publication year - 2019
Publication title -
clinical, cosmetic and investigational dermatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.73
H-Index - 35
ISSN - 1178-7015
DOI - 10.2147/ccid.s207256
Subject(s) - sun protection factor , sun protection , hyperpigmentation , pigment , dermatology , action spectrum , photoprotection , medicine , chemistry , photochemistry , biochemistry , photosynthesis , organic chemistry
The role of visible light (VL) in the process of skin pigmentation by solar radiation has been demonstrated. Sunscreens with the presence of pigments, particularly iron oxide (IO), have a greater protective effect against VL and are, therefore, highly recommended for prevention and treatment of hyperpigmentation disorders. This study aimed to evaluate 33 sunscreen formulations, and through spectrophotometric measurements, proposes new methods to evaluate the VL protection factor and the pigmentation protection factor.