Stretch marks are light-colored scars on the skin that often result from pregnancy or rapid changes in weight. They can appear in both men and women, but women are especially plagued with them during pregnancy. They are not dangerous, but they can be unsightly. Until recently, there were few treatments. But treatment with blue light-emitting diodes (LEDs) is showing promise in diminishing the appearance of stretch marks.
Cause of Stretch Marks
Stretch marks commonly appear on the breasts, the stomach, the hips and occasionally the legs, especially the upper thighs. Stretch marks are caused when the dermis, which is the middle layer of skin, is stretched to a point at which its elasticity begins to break down and microscopic bleeding occurs. As the dermis stretches, the epidermis (the outer layer of skin) also stretches, making it translucent. New stretch marks are reddish or purple, but eventually they fade to a silvery white.
LED Function
LEDs produce a diffuse and uniform light that penetrates deeply into the skin, causing photostimulation, which rejuvenates the epidermal cells. Unlike true lasers, LED light devices do not heat the skin and can cover a larger area of skin in one treatment. Blue LED light therapy evolved from the ultraviolet light therapy that physicians have used to treat such skin conditions as psoriasis and acne. Blue LED treatments can effectively reduce fine wrinkles and facial skin discoloration, according to the American Academy of Dermatology (AAD). Dermatologists recently began using blue LEDs to successfully reduce the appearance of stretch marks.
Effects
LED light therapy can diminish the appearance of older, faded stretch marks, according to New York City dermatologist Dr. David Kriegel. When LED light is beamed onto the stretch marks, it causes a reduction in the apparent scarring, softening the stretch marks and flattening them. The treatment does not make the stretch marks disappear entirely, Dr. Kriegel says, but does change their color so that they look much the same as the surrounding skin.
Treatment
Treatment with blue LED lights to reduce the appearance of stretch marks is painless, and dermatologists say there should be no discomfort or adverse effects after a session. Many patients say they find it soothing and relaxing. At least 10 to 20 treatment sessions over five to 10 weeks are needed to reduce the appearance of the stretch marks by 20 to 60 percent, Dr. Kriegel says.
Maintenance
The effects of blue LED light treatment for stretch marks can be permanent, but Dr. Kriegel notes that follow-up or maintenance treatments may be necessary to keep the treated skin looking its best.
