I recently saw an ad for “Revita” shampoo that claims to help regrow hair by blocking DHT. What is your opinion of shampoos like this that have supposed hair growing features? Can it be used together with Propecia (which I have been on for 8 months), or would that be overkill?

There are no topical products that block DHT for the treatment of male pattern hair loss in the same way something like finasteride or even dutasteride can. Propecia (finasteride) blocks DHT, but if you put that in a shampoo it will not work, because it will not get down to the growth center of the hair follicles which is at least 3mm below the skin surface. You can claim anything to sell a product and as stated many times here, “It is a buyer beware market”.

Balding Forum - Hair Loss Discussion

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