Nizoral anti-dandruff shampoo treats and prevents itching and scalp redness. The shampoo's targeted action targets the root cause of dandruff. However, it is gentle on hair and leaves no odour. It is suitable for both adults and teens over 12 years. Always read the label. Use this product: Get your hair wet. 2. Use a little to your scalp. Make a lather. 3. Apply to scalp for at least 3-5 minutes to get the best results. 4. Rinse well. Use 3 to 4 days for the first 2 to 4 week to remove dandruff. To prevent dandruff coming back, use it once or twice a week thereafter.