Cryotherapy 

Cryotherapy (Liquid Nitrogen)

Cryo Therapy or freezing, as it is commonly referred to, can be used to treat many skin conditions, including Actinic Keratosis, Seborrhoeic Keratosis, warts, skin tags and some skin cancers. A special flask is used to freeze the area being treated which may turn red and possible blister after treatment. The area will form a scab which usually heals within 1-3 weeks.
Some conditions may require more than one cryo therapy treatment.

You may have discoloration (pinkness, redness, or lighter or darker skin), at the treated area for up to 1 year after the treatment.