Smelly hair, itches, no flakes, no scales, no dandruff, no lice. Using neutrogena t/gel shampoo and conditioner. No relief. What is it?

Smelly Hair. Basically, unpleasant odor in hair arises due to microbial growth on oily scalp. Factors like poor personal hygiene, excessive sweating, strenuous physical activity, overactive sebaceous glands on scalp, exposure to chemicals and environmental pollution, cigarette smoking etc contribute in causing smelly hair.