Protective Serum A radiance-boosting serum that encourages healthy skin metabolism and strong skin cell turnover for improved brightness, texture and glow. Phormula 3-9 Repair Serum acts as a liquid therapeutic bandage, gently releasing nutrient-rich active ingredients into the skin to elicit the skin's natural healing response. Collagen and elastin production are boosted, resulting in greater elasticity, hydration, and evenness of tone. Effectively counteracts environmental skin damage.