THD Ascorbate (BV-OSC)

THD ascorbate is completely photostable, and ideal for topical use because it is proven to penetrate skin, and to remain bioavailable in skin to optimally quench free radicals and oxidative stress. The “THD” part of THD ascorbate stands for “Tetra Hexyl Decyl”, which means that there are 4 fatty acid groups attached to the vitamin C, helping it cross the skin barrier and get where it needs to go to have the best results in skin.