The model implies applying two to a few drops of your oil to moist or dry hair, daily or as desired, and leaving it on. Besides applying it to your scalp to market hair growth, You need to use it on the lengths of your hair to bolster your strands, https://allhealthmarket.com/product/health-and-beauty-2/hair-care/biotin-hair-oils-for-hair-growth-anti-breakage-hair-growth-and-collagen-for-natural-hair-growth-anti-hair-loss/