Apply the VT COSMETIC PDRN Riddle Shot Hair Ampoule to clean, slightly towel-dried or dry hair, focusing especially on the lengths and ends. Place a few drops in the palm of your hand, warm the product, then distribute evenly, avoiding the roots to prevent weighing down. Do not rinse: leave the ampoule on as a leave-in treatment to boost the vitality, shine, and softness of your hair. Use 2 to 3 times a week or whenever your hair feels tired.