Objective: To evaluate the histological effects of a new 675-nm
laser device on the skin. Background: Innovative technologies based on physical principles have been proposed in recent years to improve the treatment of aging skin.
Laser technology is currently being studied for its potential in
skin care treatments. A new 675-nm
laser device is being used for the treatment of
hyperpigmentation,
scars, and various types of wrinkles. Methods: A 42-year-old man underwent a 675-nm RedTouch®
laser session for the treatment of aging signs on the neck. Two 2.5-mm biopsies were taken from the treated area and the adjacent area untreated with the
laser, 45 days after the procedure. Comparison of the immunohistochemistry findings and assessment of the
collagen and
elastin fibers were performed by a board-certified dermatopathologist. Results: Skin biopsies revealed histological changes that comprised proliferation of new
collagen fibers in the treated area, when compared to that in the untreated areas. Conclusions: Histological analysis suggests that the 675-nm
laser has a potential role in stimulating
collagen remodeling, with a significant increase in thin and new
collagen fibers.