I am looking into cryotherapy because I had a hysterectomy (kept my ovaries) two weeks ago. I am hoping it will help with the swelling. I am reading, however, that cryotherapy may cause hypopigmentation or hyperpigmentation. I am fair, but I would not mind becoming more fair. I most definitely would not want hyperpigmentation, however. How is lighter skin achieved through cryotherapy? Also, is cryotherapy safe for me now post surgery? I plan to ask my gyn tomorrow.