Instead of trying some hit and error process you should go for your constitution check. You are too young. At this age if you are suffering with grey hair problem then it will be better to get bro know the heat level of the body. Sometime excess heat leads to low metabolism rate and other issues in the body. Once you are done with your constitution you can choose food and exercise accordingly. That will be the permanent solution of the problem. You should not go for some hit n trial solutions as it’s a major problem.

Gud afternoon a healthy nutrient dense diet with ample amount of water intake is essential.

It can be due to variation in melalin content check with derma doctor over it

Healthy afternoon sir, Natural home remedies for reversing grey beard: 1. Coconut oil with Amla juice 2. Coconut oil with curry leaves 3.Eat black sesame seeds 4. Black tea leaves spray 5.cow butter Masaj 6. Onion juice 7. Bhringraj oil 8. Castor oil 9. Fenugreek seed oil Some essential oils reversing grey beard: Rosemary oil Lavender essential oils Peppermint oil Cedar woo oil.

Constitutional treatment will be really effective in these problems as it treat patient as a whole I need your detail case history to guide u properly if u wish to take proper treatment consult online through practo app for proper management