Sir, I am Mr. John , a college professor from Kerala, India. I have sever bacterial infections on scalp like acne since many months. It seems incurable,. I consulted many dermatologist s. Applied shampoos, and salicylic acid etc. Consumed anti biotics ,but nothing helps. What to do !!! As one dermatologist suggested, the bacteria hide underneath scin and come back after medication. I am so tensed, my hair started going too much gray now. I used to apply too much Ayurvedic oil to protect hair