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• Color Your Hair Naturally
The third best option is to buy semi-permanent hair dyes, as those only coat the cuticle and will not penetrate the hair shaft.
One good tip I heard of for reversing grey hair is to eat 1 tablespoon of unsulphured blackstrap molasses every day with a glass of water in the mornings. Molasses are full of iron and potassium, which also helps hair growth.
You can also apply it directly to your hair starting from the roots, and leave it on as long as possible. It is quite messy as it will melt with your body heat, so it is recommended to wrap your hair in cling film and put a shower cap on