How Does Laser Hair Treatment Work? Our Experts Explain

How Does Laser Hair Treatment Work? Our Experts Explain

Author

Hairy Hair

Verified by

Matthew Payne

Published on

May 27, 2025

Est. Reading Time

12 mins

Low-level laser therapy (LLLT) differs from high-level lasers because they will not cut or burn. LLLT utilises light waves at a certain frequency that can penetrate the body and cause a chemical reaction.

LLLT can be used to stimulate healing, relieve pain and reduce inflammation. In the following, we will explore how LLLT works and how Hairy Hair can help you with balding.

What is red light?

You’ll notice that LLLT devices emit a red light. This red light has a spectrum, which means that different wavelengths fall under the colour. These include red light, near-infrared light, and infrared light. They each exist in their specific wavelength.

Different wavelengths can also change how deeply the red light will penetrate and what chemical reaction it will produce. Wavelengths are also measured in nanometers, but only those within the range 400 nanometers (nm) to 700nm can be seen by the naked eye.

While red light (600 nm- 650 nm) and some near-infrared (650 nm- 950 nm) lights can be seen, infrared (950 nm- 1200 nm) cannot be detected by the naked eye.

Red light therapy can also vary depending on irradiance. This is the intensity of the light and can change depending on how deep the light is travelling. As it enters deeper into the tissue of the skin, it diffuses more, so a higher intensity is needed to reach further layers.

When light diffuses, it isn’t as effective, but higher irradiance isn’t required for surface layer conditions. The diffusion of the red light can also change depending on skin pigmentation. The level of intensity can change depending on the shade of skin and if the area is tattooed.

 

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What is the treatment used for?

Different wavelengths and irradiance levels are used in the treatment of different conditions. In the treatment of skin conditions, a red light lamp works best. These utilise the red and near-infrared part of the light spectrum. These are most beneficial as they can aid issues just below the surface of the skin.

The heat utilised in red light lamps does not harm the skin, and a relaxing sensation is generally noted by those who use them. The therapy detoxifies and can produce an anti-aging result.

LLLT is more in-depth and is utilised in the treatment of a wide range of conditions, including sprains, tendonitis, plantar fasciitis, back pain, arthritis, wound healing, joint pain, sciatica, nerve pain, and hair loss.

How does LLLT work internally?

Skin can absorb things that it comes into contact with, including light. Some light, such as ultraviolet (UV), that is transmitted by the sun, is not healthy for us. Other light on the red spectrum can provide benefits for our bodies.

Photons are absorbed by the chromophores present within the skin cells upon being irradiated by red light. Once they absorb light of such a frequency, it is an incident that sets a chain reaction as electron transport increases. The molecules are able to produce an internal chemical energy source referred to as adenosine triphosphate (ATP) in the body after the electrons have been transferred into the right molecules.

Cells get a boost of energy with the introduction of ATP and nitric oxide in our body. This results in enhanced circulation of blood, oxygen and food for our bodies to attain in greater quantities. In hair loss treatment, it might initiate hair growth by increasing the intake of nutrients, as when your follicles are well-nourished, they will grow hair that is stronger and could handle the falling off process more efficiently.

LLLT can also activate stem cells to promote tissue repair and healing, which can potentially help with scalp issues such as inflammation, which could be leading to hair loss. Such reactions in your body also have the potential of helping to speed up tissue regeneration, which subsequently can activate sleeping hair follicles.

LLLT advice

Your eyes should be protected when using LLLT in a clinic. At-home devices are typically not powerful enough to cause harm if improperly used, but clinical-grade machines need to be operated by an experienced technician. If you have direct long-term eye exposure to red light, it could lead to floaters or other damage. 

Cancer patients should avoid LLLT as it can cause issues in cancer growth and proliferation treatment. People who have seizures or epilepsy should avoid LLLT. The treatment can trigger an epileptic seizure due to the red light wavelengths. 

Pregnant women should also avoid LLLT, as further studies should be carried out to determine if the treatment has any influence on infant development.

LLLT treatment is not generally included in insurance policies as it is a cosmetic procedure. You may wonder how many laser hair treatments are needed to see regrowth, and in the clinic, multiple sessions are needed to see the desired effect after several months. 

Initially, this may be weekly or twice weekly, with the number of sessions decreasing over time. This means that clinical treatments can be a costly investment. 

At-home devices are an alternative for those who are in the earlier stages of hair loss but require more frequent use and are not as powerful as their clinical-grade counterparts.

 

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How can Hairy Hair help with my hair loss?

LLLT may be able to encourage hair growth if you are seeing the first signs of hair loss. It may not be powerful enough to treat hair loss on its own, especially if you are experiencing moderate or advanced hair loss.

When LLLT is combined with other treatments, it may be able to help encourage further regrowth. By combining treatments, you may be able to give your hair a better chance to regain lost hair.

Hairy Hair provides a daily pill that takes a comprehensive approach to hair loss. The supplement works as a dihydrotestosterone (DHT) blocker. This hormone causes hair follicles to shrink in a process called miniaturisation, which eventually leads to hair loss.

The pill also acts as a vasodilator. This helps to widen the blood vessels in the scalp so that more oxygen and nutrients can reach your follicles. Rounding out the powerful combination of ingredients are natural growth promoters. These aid in the production of keratin, the protein needed for the creation of hair strands, and reduce inflammation on your scalp.

Conclusion

LLLT gives customers a non-invasive treatment they can use to promote new hair growth. The therapy can potentially get blood vessels pumping and reduce inflammation. The key with LLLT is consistency, so the time required needs to be added to the cost of the investment.

Hair loss can be treated better at the first signs, and therefore, it is worth being proactive regarding your treatment. By selecting a full treatment that addresses several hair loss issues, you may be able to give your hair a greater chance for regrowth.

Contact Hairy Hair today if you’re facing hair loss and are looking to take action. To begin your treatment, just fill in a short online form so we can tailor your treatment to your condition. From there, a qualified Australian GP will give you a call to discuss your personalised treatment plan and answer any questions you may have.

Finally, your prescription will be sent straight to your door with no clinic visits required. Our support team will be on hand throughout your treatment to monitor your progress and facilitate any adjustments to your supplement if necessary. Everyone’s hair loss is unique, so choose a treatment that works with you and your hair loss.

 

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