NEW Intelligent Retinol 6TR is a 0.6% retinol serum, formulated with Time Release Technology to slowly deliver the retinol, the lightweight moisturizing serum is supercharged with retinol-booster climbazole and ultra-hydrating squalene for optimized results. Intelligent Retinol 6TR visibly refines skin tone and texture, while softening the appearance of signs of skin aging. .5 FL oz.