Check out Some By Mi - Galactomyces Pure Vitamin C Glow Serum, featuring galactomyces ferment filtrate, ascorbic acid, and strengthens and brightens skin. Outfitted with Vitamin C, this serum works to brighten the skin by countering hyperpigmentation. Galactomyces ferment filtrate works to boost the elasticity of the skin by increasing collagen production, working to reduce fine lines and wrinkles. Deeply moisturizing, the power of galactomyces ferment filtrate was discovered by looking at the hands of elderly brewery worker's youthful hands.