Bradford University researchers have found a cure for grey hair which is set to shake up the hair dye industry.
Scientists found people who are going grey develop "massive oxidative stress".
It is caused by the accumulation of hydrogen peroxide in the hair follicle, which causes hair to bleach itself from the inside out.
According to the FASEB Journal, the team have discovered the accumulation of hydrogen peroxide can be remedied with a proprietary treatment.
They described it as "a topical, UVB-activated compound called PC-KUS (a modified pseudocatalase)".
The treatment can also be used for people with the skin condition vitiligo, which causes a loss of pigmentation.
In 1993 Michael Jackson claimed to have developed vitiligo.
Bradford University Professor Karin Schallreuter said: "To date, it is beyond any doubt that the sudden loss of the inherited skin and localised hair colour can affect those individuals in many fundamental ways.
Professor Schallreuter said: "the improvement of quality of life after total and even partial successful repigmentation has been documented."
She is a specialist in vitiligo and the research team made their discovery after studying an international group of 2,411 patients.