REN Bio Retinoidâ„¢ Youth Serum is a clinically proven healthy ageing serum that combines a plant-derived alternative to Retinol, Bidens Pilosa, with Ceramides and Niacinamide to firm, even tone and pigmentation, plump, smooth, and improve elasticity, while visibly reducing fine lines and wrinkles after just 7 days. Added Niacinamide, a multi-active stable form of Vitamin B3, helps protect against free radical damage and improve brightness and firmness; while Ceramides from Wheatgerm work to strengthen the skin barrier, increase skin hydration, soothe and reduce irritation. Benefits - Helps reduce fine lines and wrinkles- Improves skin roughness, elasticity and firmness- A gentle formula that won’t irritate your skin- Packaged in a recyclable glass bottle, with a twist-lock pump made from 50% recycled plastic and without an outer cap