Zelens Zelens Power C Collagen-Boosting & Brightening Concentrate 30ml | Size 30ml | Add a daily dose of Zelens' power c collagen-boosting & brightening treatment to your skin care routine, a high-potency concentrate formulated to brighten your complexion while promoting firmness and elasticity. This silky-soft, powerful skin treatment is enriched with a patented complex of fermented botanicals rich in vitamin c working to reveal your skin's natural radiance, while promoting the skin's production of collagen for reduced fine lines and ageing. Perfect for all skin types, apply a few pumps in the morning and night to help turn back the clock on your complexion.