Evaluation of the presence of formaldehyde and biological tests in cosmetic products for hair straightening

Abstract

With the current composition of cosmetics, chemical additives in order to improve properties and performance, the products have not been related to damage to health, which does not mean that they are safe, especially when evaluating from a long-term perspective. Thus, this study aimed to assess the presence of formaldehyde and perform biological tests using cosmetic products for hair straightening. The work started through experimental research that addressed the identification of Formaldehyde through Schiff's reagent, integrating the alternative colorimetric method (PhotoMetrix®), verifying the cytotoxicity of cosmetics through the toxicity test against Artemia salina and evaluating its irritating potential through HET-CAM (Hen's Egg Test on Chorioallantoic Membrane). The results revealed that of the samples, the marked presence of formaldehyde was identified by colorimetric means, with 86% of the samples positive. Regarding biological tests, all samples showed lethality and irritating potential. The results state that there is a need for more effective surveillance in relation to cosmetic products, thus raising the importance of cosmetovigilance through the pharmaceutical professional.