Laser Hair Removal: Can it Treat Ingrown Hairs?

The skin is the largest organ in the body and is often the first thing people notice about us. At the same time, it is also the most easily irritated and prone to a variety of problems, as it is constantly exposed to pollutants, harsh chemicals, and various creams or abrasions. This is especially true for hair removal or abnormalities, such as ingrown hairs, which many people experience. Ingrown hairs can occur almost anywhere on the body where there are hair follicles, making the skin appear uneven and unsightly. If you accidentally scratch or pick at them, they can become inflamed and leave scars that are even more noticeable. There are many ways to treat ingrown hairs, but one of the most effective is laser hair removal.


What are Ingrown Hairs?

Ingrown hairs (keratosis pilaris) are caused by a buildup of keratin in the hair follicles. Keratin is a protein in the hair follicles that helps protect the skin from infection and harmful substances. However, when keratin accumulates, it can thicken the skin and prevent new hairs from growing through, causing them to curl under the skin.


The affected area will have small, raised bumps that feel rough to the touch. The skin will appear uneven, but there will be no pain, itching, or irritation. Ingrown hairs are most common in areas with dry, rough skin, such as the cheeks, upper arms, thighs, elbows, knees, back, or buttocks. The most common cause of ingrown hairs is hair removal methods such as shaving, tweezing, or waxing, which can irritate the skin and hair follicles.

Initial Treatment for Ingrown Hairs

If you have a few ingrown hairs, you can start by applying a moisturizer to the affected area. If the condition is more severe, you can apply a cream containing an exfoliating agent, such as salicylic acid, AHA, or lactic acid. This will help smooth the skin. Regular exfoliation can also help thin the skin cells around the clogged hair follicles and make it easier to remove ingrown hairs. However, as long as new hairs continue to grow, ingrown hairs can always occur. Therefore, laser hair removal to stop the hair growth cycle is the best long-term solution.

How Can Laser Hair Removal Help with Ingrown Hairs?

Laser hair removal uses a beam of concentrated light energy at a specific wavelength to penetrate the skin and destroy the hair follicles. Each hair follicle contains melanin, which absorbs the energy from the laser light. This causes the hair follicles and the surrounding tissue that produces hair to shrink and eventually die. The hairs that are in the growth phase will gradually fall out within 1-2 weeks after the first treatment. It also slows down the growth of new hairs, making them thinner and less noticeable for a long time, from 6 months to 2 years.

Benefits of Laser Hair Removal for Ingrown Hairs

  • Prevents the growth of new hairs, which is the root cause of ingrown hairs
  • Permanently solves the problem of razor bumps, as no new ingrown hairs will grow
  • Various laser hair removal technologies can be used to treat ingrown hairs in many areas of the body
  • Laser hair removal does not irritate or damage hair follicles like other hair removal methods, leaving the skin smooth, radiant, and hair-free for a long time. You won’t have to worry about removing hair yourself as often, and you won’t have to worry about new hairs growing back. This effectively ends the cycle of ingrown hairs.

Types of Laser Hair Removal


IPL, or Intense Pulsed Light, is not actually a laser but a high-intensity light source. It is relatively inexpensive and one of the most popular methods. IPL has a wider range of wavelengths than lasers, which typically have a single wavelength. However, IPL cannot penetrate the skin as deeply as lasers. It is commonly used to remove hair from the underarms, legs, or arms, and can also help reduce dark spots, razor bumps, and ingrown hairs.

However, the downside of IPL is that it takes a long time to see results, and multiple treatments are required to achieve satisfactory results. The number of treatments can range from 6 to 12, depending on the area being treated and the severity of the problem. IPL is not suitable for people with dark skin or dark hair, as it can easily cause burns. Side effects of IPL can include skin redness, darkening or lightening of the skin, but these usually go away within 2-3 hours after treatment.

Alexandrite Laser

The Alexandrite laser uses an Alexandrite crystal as the light source. This type of laser has a wavelength of 755 nanometers, which allows it to penetrate deeper into the skin and target melanin in the hair follicles better than IPL. The Alexandrite laser is suitable for people with medium skin tones but is not suitable for people with dark or black hair, as it can increase the risk of burns. It is ideal for large areas, such as the arms and legs.

Diode Laser

The Diode laser works like other laser hair removal methods by sending heat energy deep into the skin. When the pigment cells in the hair follicles absorb the light energy, the hair follicles in the growth phase (anagen phase) gradually shrink and die, and the hair falls out within 1-2 weeks after the first treatment.

The most common wavelengths are 800-810 or 1064-1350 nanometers, which can be adjusted to suit the skin and hair type of the individual. The Diode laser can remove hair and ingrown hairs without leaving any laser marks and is painless due to the built-in cooling system. It can remove hair of all depths, both fine and thick.

In addition to solving hair problems, it also stimulates collagen production under the skin, making the treated area smoother and brighter. The Diode laser is suitable for all skin colors.

YAG Laser

The YAG laser is another popular laser hair removal method. The YAG laser has a wavelength of 1064 nanometers, which allows it to penetrate deep into the skin to the level of the hair follicle cells, making it ideal for Asians or people with dark skin.

The YAG laser is suitable for full-body hair removal and is effective in treating hair and ingrown hairs, leaving the skin smoother and tightening the pores.

There is a cold air blower during the treatment to reduce pain and make the skin feel more comfortable. There may be some redness after the treatment, but it will go away on its own within 1-2 hours.

How Many Laser Hair Removal Treatments Are Needed to See Results?

In general, doctors recommend completing a full course of treatment, which consists of at least 5-8 sessions, spaced about 4 weeks apart. The number of sessions required will depend on the hair type, the area being treated, and the individual’s condition.

Laser hair removal will not show results immediately after the first treatment, but the hair will start to fall out about 1-2 weeks after the treatment. You will start to see noticeable results after the 4th or 5th treatment. In most cases, after completing the 8th session, the hair will be completely gone and will not grow back for 6 months to 2 years. There may still be some fine hairs, but once the hair problem is gone, the ingrown hairs will gradually disappear, leaving the skin clear, smooth, and radiant.

Which Type of Laser Hair Removal Is Best?

When choosing the right type of laser hair removal for you, you need to consider not only the proven results of each type of laser but also other important factors, such as your skin tone, the area you want to treat, the thickness of your hair, and the color of your hair. This is because the wavelength of each type of laser affects the skin color and hair color differently.

Another important factor is the expertise of the provider, who should be able to advise you and help you determine which type of laser is right for your skin color and hair type. During treatment, the wavelength should be adjusted to achieve the best results and ensure the safety of the patient’s skin.

At APEX, we are experts in permanent laser hair removal and fully understand the problems of hair and ingrown hairs that people are concerned about. We have introduced the latest laser hair removal technology to provide better, faster, and smoother hair removal. Most importantly, it is painless.

Why Choose Laser Hair Removal at APEX?

At APEX, we have over 28 years of experience in providing comprehensive beauty services and have performed over 5 million permanent laser hair removal procedures.

Our staff are experienced laser hair removal specialists who are constantly trained and educated in laser hair removal techniques, ensuring the safety and effectiveness of smooth skin without side effects.

APEX offers the latest laser hair removal technology to remove all types of hair at all depths under the skin, better, faster, smoother, and painlessly than traditional laser hair removal.

If ingrown hairs are causing you anxiety, affecting your confidence, and you want laser hair removal to solve the problem, trust our team of expert doctors at over 50 APEX clinics across Thailand.


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Permanent Laser Hair Removal