Hi, Follifast hair tincture contains benzyl nicotinate, salicylic acid and vitamin K which control hair fall. Benzyl nicotinate increases skin oxygenation which can aid healing. Salicylic acid makes skin cells shed more rapidly, promoting growth of new cells. Vitamin K has vascular effect and can influence healing. Thus, Follifast hair tincture is beneficial in round hairless patches on the scalp, loss of hair of the body and scalp, loss of hair caused by aging, symptomatic hair loss after infectious diseases. Use this medication according to your doctor s advice. Biotin is one of several vitamins that plays a role in the growth of healthier, thicker hair. It is proved that use of Biotin produces a significant increase in hair growth in people with a deficiency. It should be taken as long as your doctor has advised to take. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Zubayer Alam, General And Family Physician