For a couple of days after treatment, the affected skin may become red and tender. Many people describe the sensation as similar to a sunburn. The process itself, however, is typically not painful.

Sunburn:

Sunburn is the term for red, sometimes swollen, and painful skin caused by overexposure to ultraviolet (UV) rays from the sun. Sunburn can vary from mild to severe.

The extent depends on skin type and amount of exposure to the sun. Sunburn is a serious risk factor for skin cancer.

Because of variations in the intensity of UV radiation passing through the atmosphere, the risk of sunburn increases as you approach the equator. The higher the latitude, the lower the intensity of the UV rays.

On a minute-by-minute basis, the amount of UV radiation is dependent on the angle of the sun. The greatest risk is at solar noon when the sun is directly above you.

A few different side effects can appear after laser hair removal. Most side effects are minor and temporary. Anyone experiencing lasting side effects should consult their dermatologist.

Redness and irritation

Laser hair removal damages the follicles of the targeted hairs. The body reacts to this, and many people experience redness and irritation in the affected areas. The skin may tingle or feel tender, and may even appear to swell slightly.

The symptoms are usually short-lived. The affected area may look similar to skin that has just been waxed or plucked. Some dermatologists use a topical anesthetic to reduce how much a person’s skin reacts to the process.

Irritation should ease after the initial reaction, usually within a few hours of the treatment. Swelling and redness may respond well to ice packs or a cool bath.

Crusting

Some people may experience skin crusting in the affected area. This is typically a minor issue but can be inconvenient.

Crusting can sometimes lead to scabbing or scarring. By taking care of the treated area after laser removal, such as by using a moisturizer, a person may prevent any lasting issues from this treatment.

Changes in skin color

Some people may notice minor color changes to the treated area of skin. It may get slightly darker or lighter, following laser hair removal.

People with lighter skin may be more likely to experience darker pigmentation changes. People with darker skin tones may be more prone to lighter pigmentation changes. These changes tend to fade away over time, and the skin returns to normal.

Eye injury

The hair removal procedure involves the use of powerful lasers. This means there is a risk of potentially serious eye injury, especially when a practitioner is working on a person’s face.

Both the person receiving the treatment and the practitioner should wear protective eye equipment to help prevent injury while the procedure is carried out.

Risk of skin infection

As with other cosmetic hair removal methods, damaging hair follicles with a laser can create an infection risk.

The affected area should be treated as a wound while it heals. People should report any signs of infection to a dermatologist.

Finally, they should not apply over-the-counter (OTC) antibiotic creams to large areas of skin if an infection arises.

Less common side effects following laser hair removal can include the following:

Burns and blisters

There is a risk of burns and blisters if laser hair removal is not done correctly.

When a qualified practitioner carries out the process, however, burns and blisters are rare.

Laser hair removal uses high-heat lasers.

A practitioner may apply a cooling device to a person’s skin just before the laser is used. This helps to prevent the laser from burning the skin.

Scars

Scars are typically not a side effect of laser hair removal. However, if the practitioner makes an error, scarring can occur. This should not be an issue with most qualified practitioners.

Scars may also form if people do not care for the treated area correctly afterward.

They should treat the affected skin as if it had been sunburned to avoid further damage. This means keeping it moisturized, protected from light, and checked regularly for signs of infection.

Laser hair removal therapy does work, but it rarely achieved permanent hair removal. Laser treatment can significantly reduce hair growth, nevertheless.

After the first treatment, many people will only be hair-free for a few months. The hairs will eventually grow back, though they are often finer, lighter, and less likely to be noticed than before.

Many people will require multiple sessions to achieve a more permanent or satisfactory solution to unwanted hair. The hair may grow back lighter and thinner with each subsequent session. After enough treatments, it may stop growing back altogether.

Laser hair removal may also be more effective on dark hair. People with blond, reddish, or grey hairs may not notice much of a change, as laser lights are attracted to dark hair and are often not successful on light hair.

Experts do not recommend laser hair removal for people who are pregnant. This is because scientists have not carried out any human studies that prove the safety of laser hair removal during pregnancy.

Pregnancy causes hormonal changes in a person’s body. This can commonly cause extra hairs to grow in unwanted places. While this growth can be embarrassing, the hairs often go away on their own.

If the hairs do not go away unaided, a person may want to try laser treatment after their pregnancy. Doctors may ask them to wait a few weeks after giving birth before they have the treatment.

There are several unfounded myths surrounding laser hair removal:

Laser hair removal causes cancer

The myth that laser hair removal therapy can cause cancer is unfounded. The lasers are specially designed to pass through the skin cells and target only the hair follicles deep within the skin.

The lasers used in laser hair removal do produce a small amount of radiation. However, this radiation is not thought to be harmful, and there is no evidence that laser hair removal therapy causes skin cancer.

Laser hair removal causes infertility

Again, there is no evidence that laser hair removal causes infertility. The lasers only penetrate the skin and do not reach or affect any other organs. Laser hair removal is usually safe, even in sensitive areas such as the groin.

Home kits are just as good as seeing a dermatologist

Home laser removal kits are available for people who want to remove unwanted hairs without going to a dermatologist.

Many people may experience modest results from using these kits, such as lighter or finer hairs. However, home kits are not the same as the powerful medical devices used by qualified practitioners.

Anyone experiencing adverse reactions to laser hair removal should consider seeing their doctor. They can usually manage symptoms such as redness and swelling at home, but they should always report signs of skin infections to a doctor or dermatologist

Reporting symptoms early allows for quick treatment and may help prevent any permanent changes.

Anyone trying to become pregnant should speak to their doctor before getting laser hair removal. A doctor can advise on other options, as laser hair removal often requires multiple sessions that should not be undertaken during pregnancy.