For dandruff, you can undoubtedly use a combination of Soulflower Tea Tree Oil and Tea Tree Essential Oil. If you have excessively dry scalp, switch that with Soulflower Castor Carrier Oil and Lavender Essential Oil. The regime should basically be a three step process of protection, healing and conditioning.
A good hair care oil such as Castor, Olive, Coconut, Rosemary Lavender or Tea Tree will do the moisturising and protecting part. For healing, use a SLS Free Shampoo Bar such as Soulflower Reetha Coconut, Rosemary Lavender or Sandalwood Geranium. Follow it up with applying Soulflower Argan Carrier Oil as a leave-in conditioner and hair serum.