Hi
You should figure out the cause of dandruff
- excessive sweating in head
- fungal infection
- improper maintenance of hairs
- overuse of dyes and other cosmetic products
- other scalp skin conditions like psoriasis, eczema etc.
The dandruff cause graying of hairs. Are there dry white flakes? or is there oily, itching scalp with ulceration?
As of home remedy you can wash hairs with decoction of neem leaves and ritha.
before that apply mixture of neem oil and karanja oil on the scalp for 1/2 hour.
Dietary advice - Amla, licorice, raisins, fresh coconut flakes will nourish hairs.
Next Steps
Ayurvedic medications and Panchkarma like Takradhara, Shirobhyanga, Shirobasti will be helpful. You can consult me for more details.
Health Tips
Avoid using same comb, towels or helmets which have contaminated with dadruff.
Use these after proper cleaning and drying.