Following tips may be useful for you:
1. Avoid excess sun exposure of hair. Do cover while going out.Esp. bike ridding : To prevent dust deposition on scalp
2. Balanced diet , less of refined foods, less of fats. Avoid junk food.
3. shampoo wash only 1c wk.
4. Choose less acidic shampoo
5. minimum 45 min oil massage
before shampoo wash is must.