You should be clear about one thing first, whether you have hair breakage or hair fall
. Hair breakage due to straightening and chemicals is common. However, roots are unlikely to get damaged due to surface application of chemicals as they are under the scalp
surface. If there is only breakage, you will grow healthy hair again from the roots. Have balanced diet and use good hair care regime.
If there is actual loss of hair in form of fall or thinning, you should see an experienced doctor to find out the cause behind it. Then you can start using the therapy as per advice. Castor oil is unlikely to help in this condition.
Dr. Sharad Mishra
Cosmetic & Hair Transplant