Collagen & Retinol Serum This unique concentrated formula of collagen, retinol and vitamins helps reverse the signs of aging by restoring natural plumpness & elasticity to the skin. This youth preserving serum softens fine lines, while strengthening and reviving skin's natural radiance. Acacia collagen plumps & boosts elasticity. Peptides firm skin, while chamomile soothes. Paraben free. Not tested on animals.