Serum with bakuchiol for una young and fresh skin | You have una Sensitive skin that prevents you from using products with retinol? The solution is the regenerating and firming serum against the signs of aging. tempo Dr. Jart+ Prejuvenation Serum with Bakuchiol. This gentle yet effective serum uses the antioxidant bakuchiol. It targets the first signs of aging, reduces fine lines, and leaves skin looking younger.