Hello,
You have to get yourself treated for dandruff. Only then hairfall and acne problems will get solved.
More details are required to assess the dosha involvement.
Next Steps
consult a doctor. After assessing your body constitution, detoxing and body purification has to be done.
Health Tips
Drink plenty of water
Apply oil weekly thrice and rinse your scalp with a mild shampoo
Avoid junk food and non veg diet