Features: 1. Promote healthy hair growth – Thicker, stronger, more healthy-looking hair is not just a matter of genetics; it's also influenced by nutrition. 2. This biotin hair strengthening serum helps support the appearance of dense and lustrous hair. 3. Formulated with premium quality ingredients carefully selected to support hair health. 4. Easy to incorporate into your daily hair care routine – For best results, apply to slightly damp hair after washing. Use a quarter-sized amount, warm in palms, and massage into the scalp, distributing from root to tip using fingertips. 5. Allow time for the serum to be fully absorbed by the hair and scalp. Specifications: Net Weight: 10ml, 20ml, 40ml Notice: Due to differences in monitors and lighting effects, the actual color may vary slightly from the image. Product quality is guaranteed. Under certain lighting conditions, the color may appear different. We aim to provide accurate product information. Manufacturers, suppliers, and others provide the content seen here, which has not been independently verified. See our disclaimer.