Dr. Priyanka Reddy | MBBS MD DVL on Instagram: "Biotin - helps only when there is a deficiency. Supplementing it without deficiency does not significantly make changes. Rosemary oil - has mild anti-inflammatory and circulation-boosting effects on the scalp. Evidence for actual regrowth is limited and results are slow and inconsistent. Minoxidil - works by prolonging the anagen phase and increasing follicle size. It has strong evidence for reducing hair fall and promoting visible regrowth when us