Aloe Vera

Soothes and hydrates the skin with anti-inflammatory properties. Aloe vera exerts its cosmetic effects primarily through its complex composition of polysaccharides (e.g., acemannan), anthraquinones, vitamins, enzymes, and salicylic acid. Polysaccharides form a protective film on the skin, reducing transepidermal water loss and acting as humectants to enhance hydration. Its anti-inflammatory properties stem from compounds like anthraquinones and salicylic acid, which can inhibit prostaglandin synthesis and reduce inflammatory mediators. Furthermore, antioxidants like vitamins A, C, E, and enzymes (e.g., superoxide dismutase) help to scavenge free radicals, protecting skin from oxidative stress.

Aloe vera is generally considered safe for use in cosmetics. The Cosmetic Ingredient Review (CIR) Expert Panel concluded that Aloe barbadensis leaf extract, gel, and juice are safe as cosmetic ingredients. While generally well-tolerated, rare cases of contact dermatitis or sensitization have been reported, often linked to unpurified forms containing anthraquinones or individual sensitivities.

Look for products with Typical concentrations for aloe vera extract or gel range from 0.1% to 10% when incorporated for its active benefits. However, it can be used at much higher concentrations, up to 99%, when serving as a primary aqueous base or diluent in cosmetic formulations. for clinical efficacy.