Depending on your hair length and volume, take 5-10 ml of Zandu Hair Growth Serum onto your palm. Gently & evenly apply the serum on scalp, starting from the roots to the tips of your hair. Massage the serum on scalp using your fingertips, ensuring full coverage. For optimal results, allow the serum to remain on your hair & scalp for 2-3 hours. For enhanced benefits, consider leaving it overnight. For best results, use it before every hair wash.