Is freezing a good treatmentt for lentigo (on face), if not what is the best treatment?

Pigmentation. The efficacy of cryotherapy (freezing) and trichloroacetic acid (tca) were compared for the treatment of solar lentigo. Cryotherapy was more effective than tca 33% solution in the treatment of solar lentigines of the back of the hands, particularly in lighter-complexioned individuals. For darker-complexioned people, tca 33% may be preferred. Your dermatologist may also prefer other therapie.