Using protein and moisture Puri Hair hair growth treatments can build hair strength, normalize porosity (not too high or too low), and give hair a healthier appearance. 2. Increase (Growth) Phase- Using Hair Vitamins with MSM will naturallly lengthen your phase and allow your hair to grow much longer before entering the resting and shedding phases. Other ingredients like Biotin also help promote faster hair growth in general. 3. Address Any Other Problems- Some problems can not be remedied with the above two solutions. In these cases Microscopic Hair Analysis can be an effective tool in maximizing your hair growth. Hair grows at an average rate of about 1/2 inch per month. Still there are vitamins, shampoos, leave-in conditioners, etc that promise longer hair.