Definition: Given an abstract of a paper, generate a title for this paper such that conveys the key focus of the paper.
Input: Abstract: Medium-depth chemical peeling of the skin is an intermediate procedure between superficial trichloroacetic acid application and deep phenolic cauterant application. Combining solid carbon dioxide with trichloroacetic acid promotes both epidermal and dermal regeneration. The technique for treatment of actinic degeneration, acne scarring, rhytids, and pigmentary aberrations is presented.

Medium-depth chemical peeling of the skin: a variation of superficial chemosurgery.