Five Easy Steps to achieve black hair: 1. Wet your hair and wipe off excess water. 2. Wear plastic gloves (provided) before opening the Black Hair Shampoo sachet. 3. Apply the contents of the Black Hair Shampoo sachet to your hair. 4. Massage your hair for 5 minutes to ensure even coverage on the scalp. 5. Rinse thoroughly with water. Tips: Use once a week for the first 3 weeks, then twice every 2 weeks, and later once a month for best results. Hair Dye Shampoo Usage Instructions: 1. Perform a skin test before use. If no irritation occurs, proceed with application. 2. Ensure hair is completely dry before applying the product. Do not add water during application. After application, rinse hair thoroughly with clean water. 3. After applying the shampoo, massage gently for a few minutes. Avoid scratching the scalp with nails to prevent irritation. Use fingertips for massage.