Well this condition is known as 'premature canities'
you need to check you haemoglobin
, serrum ferritin, zinc and copper levels.
Currently the options available are limited.
You can try No grey capsules - one capsule per day and No gray lotion 1ml twice a day.
Please follow with your dermatologist
regarding the same.
The results are variable.
Let me know if you have any further questions