Quality assessment of magic photo protective formulations commercialized in the central-west region of Minas Gerais

Abstract

Introduction: The use of sunscreen is essential in preventing the damage caused by ultraviolet radiation. The master formulas provide a personalized service, but bring questions about quality control. Objective: To evaluate the quality of master photoprotectors sold in the Midwest region of Minas Gerais. Methodology: Five master samples (A, B, C, D and E) and one commercial sample (F) were analyzed according to labeling pattern, total count of mesophilic aerobic microorganisms, pH, residual by incineration, qualitative analysis of sunscreen, density, spreadability, stability and quantitative SPF testing. Results: Labeling F (17%) compliant and others (87%) partially. 100% compliance in microorganism count. Qualitative analysis (100%) with photoprotectors present. Appropriate density and spreadability by (100%). Ash content in A and E (40%) 0.1% and B, C and D (60%) 1%. SPF test, organic samples, A (50%) SPF 6.67% higher than label and E (50%) 26.67% lower. Prior to homogeneous (100%) stability. A and F (33%) contained fragrance and other (67%) characteristic odor. Coloration E (17%) greenish and others (83%) white. pH of A and C (33%) inadequate and others (67%) adequate. After preliminary stability C and E (33%) normal appearance and others (67%) slightly separated. Color and odor (100%) unchanged. Of the samples with adequate pH, three (75%) stable D, E and F and unstable B (25%). Conclusion: The analyzed samples presented irregularities in at least one analyzed parameter, evidencing the necessity to follow the current legislation.