benefits Improving the health of hair methods Henna helps improve the health of the scalp because it contains antifungal and antimicrobial properties, which... For hair In turn, it helps. Reducing dandruff. Soothe itchy scalp. Soothe fungal infections. - Enhancing hair color. - Reducing oxidative stress. - Moisturizing hair. - Strengthening hair. - Regulating fat secretions in the head. - Promoting hair growth.