What Does It Mean To Say The Pro-fractional Laser Tightens "Superficially"?

The thickness of the dermis on the face varies from 0.4 mm on the eyelid to 1.2 mm on the nose and chin. The thickness of the epidermis is approximately 0.1 mm on the face. Profractional laser settings allow for 1.5 mm depth resurfacing, which reaches beyond the combined epidermal and dermal thickness on the face. It is rare that facial skin would undergo 1.5 mm depth fractional resurfacing. There is, however, connective tissue and fat beneath the epidermis and dermis... more