Ascorbyl Tetraisopalmitate Best Antioxidant Anti-Ageing Dark Spot Fading Evens Skin Tone Ascorbyl Tetraisopalmitate at a glance Oil soluble derivative of vitamin C (ascorbic acid) Helps prevent pro-aging environmental damage Promotes a firm skin structure Also known as ATIP and tetrahexyldecyl ascorbate (THD Ascorbate) Ascorbyl Tetraisopalmitate description Ascorbyl tetraisopalmitate, also known as ATIP or tetrahexyldecyl ascorbate (THD ascorbate), is a highly stable, oil soluble derivative of vitamin C that helps prevent pro-aging environmental damage from external aggressors and helps improve collagen production, allowing skin to maintain a tighter, firmer, more youthful appearance. See: Tetrahexyldecyl Ascorbate Related ingredients: Tetrahexyldecyl Ascorbate