Biostile Hair.O Capsules: Take one capsule each morning and at noon, preferably with a meal and with plenty of water. For optimal results, we recommend regular use for at least 3 months. Hair.O Serum: Apply 1 ml (one full pipette) of serum directly to a clean, dry, or slightly damp scalp every morning and evening. Spread the serum evenly and massage it in gently with your fingertips. Do not rinse. We recommend continuous use for at least 3 months. Hair.O Shampoo: Apply an appropriate amount of shampoo to wet hair. Massage it into the scalp for about 2 minutes, then rinse thoroughly. Repeat as needed. Use regularly 2-3 times a week or as needed as part of your Hair.O care routine. Hair Treatment Serums & Oils