Is Ten Therapy Sessions Enough for Vitiligo and Dark Spots?

My mother has vitiligo spots on eyebrows and some little spots on body. It has been 3 years now . The spots on the body are just the same as they were earlier but now the spots on face are increasing. She has dark spots on face from many years. She is around 70 kgs and 5'5 . One doctor she met suggested her to apply ointment on the spots and gave her sunscreen and "costly" mild face wash. Now her face burns a lot when she is cooking or when she is under the sun. The doctor also wanted my mom to get peeling done for the dark spots but she refused. We took second opinion from other doctor and it was totally different . The other doctor said no peeling is required and the ointments won't do anything. HE said 10 therapy sessions are to be done . 2 per week. I am really confused by the opinions of the doctors. What should I do.