Hello Dorothy,
I am not sure what you mean by "natural method" but I can confidently recommend a range called Pureology which is 100% vegan. I would recommend the Hydrate products, shampoo, conditioner and treatment to care for your hair. It is specially designed for color treated hair, but is great on natural hair too. Your hair will not only be in peak condition, but the fragrances in the product are from real aromatherapy oils and are heavenly.
Warm regards
Heidi