A Review on Olive Leaves and Citrus Peels from Waste to Potential Resources for Cosmetic Products

Food waste accumulation and resource depletion pose serious environmental and socioeconomic issues. Using food waste byproducts as components for cosmetic products is one approach that shows promise. The purpose of this study is to suggest olive leaf extracts and clementine peels as value-added bio-products for a cosmetic cream. Super critical extraction was used to produce extracts with an antioxidant activity of about 25%. Up to a concentration of 4% v/v ratio, the extracts had no cytotoxic effects on keratinocyte cells after 24 hours. Turbiscan studies at room temperature and at an extreme 40 °C showed that the creams’ stability was not affected by the addition of clementine peels and olive leaf extracts.