B.L. HYDRATING BOOSTER AMPULE I'm selling this because I repurchased it, but my skin type has changed. Features: This serum specializes in whitening and moisturizing, and is effective for dry skin and rough skin. How to use: Use it after washing your face and before applying lotion as a booster to enhance the penetration of subsequent skincare products. Target audience: Recommended for those with dry skin, those concerned about dull skin, and those who want to prioritize whitening care. #serum #pre-lotion #lotionbooster #booster #koreancosmetics #whiteningcare #dullnesscare