Is a p.h.D the best degree to have to become a dermatologist?

No, you will need a medical degree such as a Doctor of Osteopathic Medicine degree (D.O.), Doctor of Medicine degree (M.D.), or a Bachelor of Medicine/Bachelor of Surgery degree (MBBS/MBChB). After earning one of these medical degrees, a residency specializing in dermatology and board certification examinations must be successfully completed to become a board certified dermatologist.