Does it work? There are a lot of claims that caffeine shampoo works well. However, there isn't clinically viable evidence that caffeine shampoo has prevents or stops the loss of hair long-term. In 2018, the UK Advertising Standards Authority ruled that Alpecin could no longer advertise its ability to reduce hair loss.

Does Caffeine Shampoo regrow hair?

Caffeine shampoo has not been proven to negate the effects of DHT in the long term. ... The German brand was established following a study in 2007 showing that caffeine caused hair follicles to regrow in a laboratory dish, but there is not enough evidence to prove that caffeine works with hair on the scalp.

Does caffeine really help hair growth?

But according to research, the caffeine in coffee can help stimulate hair growth and stop hair loss. One 2007 laboratory study found that caffeine helped block the effects of DHT in male hair follicles. It stimulated hair shaft elongation, resulting in longer, wider hair roots.