تثمٌين مستخلصات نباتات صحراوٌية في تطوٌير وتقٌٌييم مستحضرات تجمٌيل للعناٌية بالبشرة.

Abstract

Given the significant increase in the use of natural products in the field of cosmetics, this study aims to highlight medicinal plants as safe and effective sources as ingredients for natural cosmetics. This study focused on two types of desert plants, namely Retama raetam (Forssk.) Webb. & Berthel. and Calligonum comosum L’ Hér., where the active ingredients in the studied plants were extracted using appropriate extraction methods and the antioxidant efficacy of these extracts was evaluated through a set of tests, using DPPH and FRAP tests, in addition to estimating the total polyphenol content and determining the sun protection factor. (SPF) The results indicated significant antioxidant activity, with IC50 values in the DPPH assay recorded for Retama raetam (262.0723 µg/mL) and Calligonum comosum (35 µg/mL). The FRAP assay showed reduced power for Retama raetam (1091.75 µg/mL) and Calligonum comosum (46.60186 µg/mL). The total polyphenol content of the studied plants was estimated at 277.822 mg EAG/g and 411.1547 mg EAG/g, respectively. The SPF for the studied plants was recorded at 25.02 and 66.15 respectively. In the application phase, these extracts were incorporated into a dual-function cosmetic formulation: a moisturizing and sunscreen cream for daytime use, and a soothing and nourishing nighttime serum. These formulations demonstrated satisfactory physical and chemical properties. These results indicate the potential for utilizing these local plants in the development of effective natural cosmetic products, particularly in desert environments.