Nobody knows because the efficacy study only last 12 months. The safety study lasted 2 years but there was no formal evaluation of whether the hair stayed. All Histogen has said about it is "hair appeared to persist" at 2 years.
HSC probably won't be permanent because the hair follicles are still susceptible to DHT but if it can last 2 years that would be a great result (and an even better one for Histogen because you'd need to get it re-done every 2 years which means more $$$ for them!).
HSC probably won't be permanent because the hair follicles are still susceptible to DHT but if it can last 2 years that would be a great result (and an even better one for Histogen because you'd need to get it re-done every 2 years which means more $$$ for them!).
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