It’s extremely simple! It’s just a simple 30 second process you'll do twice a day. Here are the simple instructions:Step 1: Fill the dropper from the serum bottle with 1ml of serum, which is one full dropper. And you’ll apply 1-3 drops of it to each area of your scalp that you’d like to improve the thickness of your hairStep 2: Using your fingertips, you’ll gently massage the serum into your scalp so that the serum can “soak in” to the follicles and work in the best possible wayStep 3: This is an important step. You do not rinse the serum. You leave the serum in your hair until your next application. This way the serum can soak into follicles and has time to stimulate, rejuvenate, and repair hair follicles.