Abstract

SVERSUT, Rúbia Adrieli et al. Quality control of capillary straighteners containing ammonium thioglycolate. Rev. colomb. cienc. quim. farm. [online]. 2017, vol.46, n.3, pp.303-318. ISSN 0034-7418.  https://doi.org/10.15446/rcciquifa.v46n3.69460.

Considering the market demand for knowledge in the area of hair straightening, it is important to perform quality control procedures in smoothing creams in order to ensure the safety of its users and the aesthetic professionals. The objective of this study was to evaluate the quality of capillary straighteners that contain ammonium thioglycolate in their formula. Ten samples of hair straighteners were analyzed. The tests performed were: dosing of thioglycolic acid and ammonia, analysis of organoleptic and pH determination. Regarding the thioglycolic acid content, three samples classified as of general use showed results above the allowed limit while all samples (both of general and professional use) were approved as far as the ammonia content goes. As for the pH evaluation, all samples had values above the established limit. The use of products with inadequate concentrations of ammonium thioglycolate and pH above the allowed limit can lead to adverse reactions to the consumer and cause damage to the hair strands. In conclusion, it is of the utmost importance to perform quality control procedures in these products in order to provide a safer experience while using them and avoid any possible adverse reactions.

Keywords : Capillary straightener; cosmetics products; quality control.

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