For healthy hair, you essentially need nutritious diet rich in protein, vitamins A, B6, B12, C, copper, iron, omega 3 fatty acids, zinc, calcium, folic acid, and magnesium. Excessive wind, sun, and heat, even too much use of blow dryers, hot showers, and straightening or curling irons can cause serious damage to your hair. Gently massaging scalp using your fingertips enhances blood circulation to your scalp, which is vital for hair growth.