HEALTHY HAIR

1. Brush your hair before washing it. This way you'll remove any dirt from your hair.
2. Massage your scalp gently massage will boost your circulation.
3. Shampoo. Nobody can tell you how often you have to shampoo your hair. When you feel your hair is dirty, wash it gentle, with a shampoo that works on your hair. Read the page about how to choose the right shampoo for more.
4. Always Moisturize your hair
5. Rinse Best way to rinse your hair is by using vinegar, if possible apple vinegar. Rinsing helps your hair shine.
6. Water Try to use mildly cold water. Finish, if possible, with cold water, this will close the cuticles.
7. Drying your hair Let your hair dry naturally. Squeeze the water, and then use a towel to blot your hair. This way you'll have a moisturized, healthy hair.
8. Hairbrush Do not use a hairbrush until your hair is dry; the wet hair can be easily damaged. Avoid plastic hairbrushes; hair will probably end up in knots
9. Season, age, sex, food & drink, tobacco, all have a big influence on hair growth. Have a healthy life and you'll have a healthy hair, too
10. Hair styling Try to avoid curling irons and hair-dryers to prevent hair damage. Also, avoid heat and prolonged exposure to sunlight

p/s :  if you wear a hijab, your hair will not be exposed to dangerous uv. it will prevent your hair from damages.