I have natural red hair about the same color as Reba McIntire and it is starting to go gray or white

To check graying of hair, mix lemon juice in olive oil, beat till frothy and apply on scalp and wash off after an hour. Premature graying of hair can be postponed by using a strong decotion of black tea and a tablespoon of salt, strain and apply to the roots for 45 minutes and wash with water. Don't shampoo. Please check out http://useinfo-grayhair.blogspot.com/ for more info.