Treat it with coconut oil. The oil is rich in medium-chain fatty acids known to strengthen the skin's connective tissue. This then makes for a healthy scalp.
To do: After a tepid bath, apply the oil to the scalp and massage it in. Then use a natural gentle shampoo to wash it out. Astringent-based shampoos strip the scalp of necessary oils that serve as protection making it prone to dandruff. The coconut oil will replace all these necessary oils that was lost to keep scalp healthy again.