11 Recipes for Homemade Natural Dye ...
6. Rhubarb Root Dye for Graying Blonde Hair
Rhubarb root is actually a very potent dye which you can use to restore that golden sheen of your graying blonde strands.
Simply boil 3 tablespoons of rhubarb root in two cups of water, let the mixture simmer for about 15 minutes, leave it to cool down overnight then strain and pour over your hair the next day.