Glycolic Acid a brightening solution is the most common alpha hydroxy acid AHA It stimulates new growth of skin collagen and elastin As well as working to diminish brown spots and hyperpigmentation it also reduces fine lines wrinkles acne scars and other signs of ageing Glycolic Acid Brightening Solution prevents dead cells from clumping together thus increasing cell turnover The skin appears bright and rejuvenated reflecting a healthy glow