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Laser hair removal is a medical procedure that uses a laser an intense, pulsating beam of light to remove unwanted hair.
Excessive hair growth is classified as either hypertrichosis or hirsutism.
Hypertrichosis is the excessive growth of body hair in a normal or abnormal pattern. It may be genetic or due to medications, hormones, malnutrition, tumors or metabolic problems.
Hirsutism is excessive growth of hair in women, but in a male pattern such as the beard, mustache or lower abdomen and may be due to hormonal problems, medications, tumors or heredity.
Many treatment options for managing unwanted hair have been available over the years, such as shaving and waxing, but these methods are temporary and offer varying degrees of success.
During laser hair removal, a laser beam passes through the skin to an individual hair follicle. The intense heat of the laser damages the hair follicle, which inhibits future hair growth.
Laser hair removal is most effective for people who have light skin and dark hair.
Although laser hair removal effectively slows hair growth, it doesn't guarantee permanent hair removal. It typically takes several laser hair removal treatments to provide an extended hair-free period. Periodic maintenance treatments might be needed as well.
Laser hair removal is used to remove unwanted hair. Common treatment locations include legs, armpits, upper lip, chin and bikini line. However, it's possible to treat unwanted hair in nearly any area except the eyelid or surrounding area.
Hair color and skin type influence the success of laser hair removal.
For example, laser hair removal is most effective for people who have light skin and dark hair because the laser beam targets the pigment (melanin) in the hair. However, advances in technology have made laser hair removal an option for people who have darker skin.
Laser hair removal isn't generally effective for white, gray, red or blond hair although treatment options for lighter hair continue to be investigated.
Stay out of the sun. A tan increases the risk of side effects, such as skin lightening. If you have a tan either from sun exposure or sunless tanning products wait until the tan fades completely before undergoing laser hair removal. Some doctors recommend staying out of the sun for up to six weeks before laser hair removal.
Avoid plucking, waxing and electrolysis. These hair removal methods can disturb the hair follicle and interfere with laser hair removal. Shaving is OK, however, since it preserves the hair shaft and follicle. In fact, shaving might even be recommended. Some studies suggest that shaving before laser hair removal improves results.
You might notice redness and swelling for the first few hours after laser hair removal. To reduce any discomfort, apply ice to the treated area. Your doctor might also suggest an aloe gel or other type of cream or lotion, as well as over-the-counter pain relievers. If you have a skin reaction immediately after laser hair removal, the doctor might apply a steroid cream to the affected area.
After laser hair removal, avoid sun exposure both natural sunlight and tanning beds. When your skin has healed, use sunscreen whenever you're in the sun.
You might also prepare yourself for possible hair shedding in the first few weeks after treatment. Don't mistake this for hair regrowth.
Avoid perfumes, deodorants or any potential irritants in the treatment area before and after treatment.
Avoid aspirin, anti-inflammatory drugs and herbal supplements due to increased risk of bleeding.
Following treatment, patients should expect:
Redness and swelling of the hair follicle, which is a normal occurrence.
Pain and discomfort, which can be easily treated with over-the-counter pain medicines.
To be given a prescription for a topical antiseptic cream to be applied after treatment.
To avoid direct sun exposure for at least one week following all laser hair removal procedures.
Results of laser hair removal vary greatly from person to person. Multiple treatments can prolong the duration of hair loss up to years in some cases but hair regrowth is still possible. For best results, you might need four to six treatments spaced a number of weeks apart. Additional periodic maintenance treatments perhaps once every six to 12 months might be needed as well.
Laser hair removal doesn't guarantee permanent hair removal. Some hair could be resistant to the laser treatment or grow again after treatment although the new hair growth might be finer and lighter in color.
The most common side effects of laser hair removal include:
Skin irritation. Temporary discomfort, redness and swelling are possible after laser hair removal. Any signs and symptoms typically disappear within several hours.
Pigment changes. Laser hair removal might darken or lighten the affected skin, usually temporarily. Skin lightening primarily affects those who have darker skin, especially if an incorrect laser is used at an incorrect setting.
Rarely, laser hair removal can cause blistering, crusting, scarring or other changes in skin texture. Laser hair removal isn't recommended for the eyelid or surrounding area, due to the possibility of severe eye injury.
Results of laser hair removal vary greatly from person to person.
Multiple treatments can prolong the duration of hair loss up to years in some cases but hair regrowth is still possible. For best results, you might need four to six treatments spaced a number of weeks apart. Additional periodic maintenance treatments perhaps once every six to 12 months might be needed as well.
If you're interested in laser hair removal, choose a doctor who's board certified in a specialty such as dermatology or cosmetic surgery and has experience with laser hair removal. If a physician's assistant or licensed nurse will do the procedure, make sure a doctor supervises and is available on-site during the treatments. Be cautious about spas, salons or other facilities that allow non medical personnel to do laser hair removal.
Before laser hair removal, schedule a consultation with the doctor. The doctor will use this visit to:
Review your medical history, including medication use
Discuss risks, benefits and expectations, including what laser hair removal can and can't do for you
Take photos to be used for before-and-after assessments and long-term reviews
At the consultation, be sure to discuss a treatment plan and related costs. Laser hair removal is typically an out-of-pocket expense.
Before laser hair removal, the hair in the treatment area might be trimmed with a pair of scissors. You might also be fitted with special goggles to protect your eyes from the laser beam. The doctor might apply a topical anesthetic to your skin to reduce any discomfort during treatment.
During the procedure
The doctor will press a hand-held laser instrument to your skin. Depending on the type of laser, a cooling device on the tip of the instrument or a cool gel might be used to protect your skin.
When the doctor activates the laser, the laser beam will pass through your skin to the tiny sacs (follicles) where hair growth originates. The intense heat from the laser beam damages the hair follicles, which inhibits hair growth. Some discomfort in the skin is possible, and you'll likely feel a sensation of cold from the cooling device or gel.
Treating a small area, such as the upper lip, might take only a few minutes. Treating a larger area, such as the back, might take several hours.(2)
Fig 1: Illustration of Laser hair removal treatment
You can resume you normal physical activity and exercise routine after 1 week or after consulting your doctor. But remember to avoid exposure to direct sun and some chemicals as in swimming pool water....more
Patients are instructed to avoid sun exposure and to use a broad-spectrum sunscreen with a Sun Protection Factor (SPF) of 30 or higher following the procedure.(1)