Products Description Allantoin occurs naturally in the roots & leaves of the comfrey plant, but to satisfy market needs allantoin is produced synthetically but nature identical. Synonyms: 5-ureidohydantoin, glyoxyl-diureide, 2,5-dioxo-4-imidazolidinyl-urea. Purity 99-100%. Melting point 230°C (446°F). Benefits USP grade Soothes and alleviates skin-irritations Has moisturizing and hydrating effects Recognized as skin protectant by the FDA (see below for making proper claims) Often used to minimize pore size Has anti-aging properties making the skin look younger and rejuvenated Use Add to aqueous phase of formulas or after emulsification process. Use levels 0.2-2%. Can crystallize if added at hot temperatures and then rapidly cooled down. For external use only. Applications Lotions, creams, sun care & after sun products, shampoos, scalp rinses, shower gels, lip & baby care products.