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The agents work by mimicking the action of an enzyme called DOPAchrome tautomerase. This enzyme is the naturally occurring antioxidant in the hair bulb that protects melanocytes from oxidative damage. By duplicating the effects of DOPAchrome tautomerase, melanocyte metabolism and survival improves.

The new agents are being formulated into a product that can be applied as a spray-on serum or shampoo. But they won’t re-colour grey hair or bring back the dead cells that produce hair colour. Instead, they protect your melanocytes.