Just because a product is marketed as "natural" doesn't mean it will work best for your hair. Understand your hair's needs(learn to evaluate its condition, porosity, sensitivities, etc.) and what ingredients work best for it. If those ingredients encompass those that are considered "natural", then use those ingredients or product with those ingredients. But never feel obligated to use them because someone tells you they're best for your hair or because wearing your hair naturally by default means using ONLY ingredients touted as natural.
Only YOU can determine what's best for your hair through trial and error.....and time.