Because Rogaine was initially FDA approved at 5% and 1mL per day, that has been the same guidelines that every other topical solution containing minoxidil has to follow to comply with the FDA. Unfortunately, depending on your area of hair loss, 1mL may not be enough to cover the hair loss area. You should apply the liquid topical directly to the scalp (not your hair) gently squeezing the dropper bulb as you move it around the area. Then use 1 finger to gently rub it into the scalp. Our founder uses 2-3 droppers of the ARB Topical Solution per night. Also, make sure you do not put it on your scalp and then lay immediately down to bed taking the solution off of your head and onto your pillow. You can use a rolled towel or neck pillow if you are going to apply immediately before bed. Or if you wait 30 minutes before bed it will be dry enough not to worry.