This means keeping it on overnight is a no-no if you do happen to have sensitive skin or a sensitive scalp. On one hand, onions help reduce hair fall and promote hair growth, and on the other, keratin is gentle on your hair and helps keep it strong, clean, and nourished.

WOW Skin Science’s onion oil shampoo contains red onion seed oil extract and black seed oil, both of which are known to help rejuvenate tired scalps and weak hair. From hair care brand Tara, this shampoo is part of a three-part onion system that includes shampoo, conditioner, and follicle-stimulating concentrate.

When you’re feeling crafty or experimental, try some of the DIY onion hair care recipes included in this article and see if you can reap onion’s hair-boosting effects. They boost hair growth: Onion extract is rich in sulphur which is essential for collagen production—a protein required to stimulate hair growth. They then added the onion extract (usually anywhere from 1 to 3 milliliters) to a natural shampoo of coconut, castor, and eucalyptus oils as well as cleansers.

Prevent hair thinning: Since onion is rich in sulphur, it helps prevent hair issues such as hair breakage and hair thinning. This shampoo and conditioner combo incorporates red onion to enhance hair strength and remove buildup.You can learn more about how we ensure our content is accurate and current by reading our editorial policy. The curry leaves in this shampoo are believed to strengthen hair from the roots and help in maintaining its natural texture. This shampoo contains onion extract, biotin, and D-panthenol, all of which contribute to reduced hair fall and improved scalp health. All products listed are carefully curated by the editorial team but use your discretion and an expert’s opinion before using them.