Greying of hair is normal after 40 years of age, but before that one needs to take care of his/her hair more. Include Antioxidant-rich foods: Fresh fruits and vegetables, amla, green tea, olive oil, fish, flaxseeds, etc. For Vitamin B12- include seafood, eggs, and meats are good sources of vitamin B-12, and milk, salmon, and cheese are excellent sources of vitamin D. Reduce tea/coffee/smoking and alcohol. Practice pranayama daily. Eating lean meats, fish, soy or other proteins promotes hair health and in turn, helps curb hair loss. Those who have been experiencing hair loss for quite some time must massage the scalp with essential oil for a couple of minutes. It helps your hair follicles remain active. You can add lavender in an almond or sesame oil