Bare Anatomy Advanced Hair Growth Serum Roll On 25ml Reduce Hairfall Hair Growth. 1. Gently roll the applicator on dry scalp, focusing on roots & thinning areas. 2. Let the serum absorb naturally, do not rinse off. 3. For best results, use daily in your AM/PM routine. Safety Information : For external use only. Keep outof reach of children. Store below 30° C, in dry place away from sunlight. Do not freeze.