Onion juice is an effective remedy for alopecia areata, an autoimmune condition. If your hair loss is due to bacterial or fungal infections and free radical damage, the sulfur compounds and quercetin, an antioxidant, in onions can help. The sulfur can also strengthen your hair. Onions also spur the activity of your natural antioxidants against hydrogen peroxide that causes hair graying. Apply the juice directly on your scalp.
@Asad Rehmanadd sesame seed oil caster oil and almond oil to it...try it...you will notice the difference yourself even if someone has grey hair they start to turn black....before washing for at least an hour every time you wash your hair or at least twice a week