The HG of vitamin C. Vitamin c boosts collagen. It helps spf perform better. It brightens skin. Diminishes dark spots. Smoothes texture. Pretty much does it all BUT the so many formulas are irritating to skin and volatile Vitamin c needs vitamin e to full work. Skincueticals is a stable form of vitamin c and e that doesn’t irritate. Use it first thing after washing the face in the morning. Never use retinol and vitamin c together. They are not friends Get 20% off with code NEWBIE at checkout. Must be a first time client LTKbeauty LTKsalealert LTKcurves