Cause of premature greying of hair has not been been identified. But stress
can add on to this leading to worsening.There is no medicine as such for reversal. But tablets containing calcium pantothenate
100mg do help in pigmentation according to some reports. Tablets come in combination of calcium panthothenate ,biotin
, zinc, copper and selenium
, which can be used. one tablet daily for atleast 6 months has to be used. As far as immediate results are concerned, the only solution is hair dyes.
wish you the best