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POSTED: 27 Sep 2024

Low-Level Laser Therapy (LLLT) for Hair Regrowth, Here’s What You Need to Know

There is growing demand for non-invasive, safe and . One treatment that has drawn a lot of attention recently is low-level laser therapy (LLLT) for hair growth. It promises to stimulate the follicles and encourage regrowth in people with thinning hair. It even has a role as an adjunct in post-transplant care. However, how effective is it really, and do LLLT hair results stand up to the hype? This article digs into the science behind low-level laser therapy for hair and how to use it. It also looks at how well LLLT works and whether there is a case for it after a .

What is Low-Level Laser Therapy (LLLT) for Hair?

Low-level laser therapy also goes by red light therapy or cold laser therapy. It uses low-level lasers or light-emitting diodes (LEDs) to stimulate the . It treats both and hair loss. This non-invasive uses a specific wavelength of light to reach the scalp and lift cellular activity in the follicles. That in turn encourages and healthier hair. Unlike more invasive treatments, LLLT does not burn or damage the skin, so it is a safe and pain-free option. range from in-clinic systems that a practitioner applies to at-home caps.

Does Low-Level Laser Therapy Really Boost Hair Growth?

To see how LLLT might help, it helps to start with the basic science of hair loss and regeneration. The cycle through : anagen (growth), catagen (transition) and telogen (resting). Thinning and baldness often follow a shortening of the anagen phase and longer resting or dormant phases. This is particularly true of , which stems from both genetics and of the follicles.

LLLT works by nudging the follicles to spend more time in the . The wavelength these devices emit, generally , blood flow around the follicle, which lifts the delivery of nutrients and oxygen. The process also helps reduce follicular inflammation and , both of which feed into hair loss. The net effect is a more supportive environment that the follicles to produce thicker, healthier .

There is some scientific backing for this. support the potential of low-level laser therapy for hair regrowth. Research shows it can increase hair density and diameter in people with androgenetic alopecia. On that basis, LLLT can improve hair count and thickness in both men and women. That said, many of the human studies are small and lower-quality, so it is worth approaching the claims with some caution. This does not strip the treatment of value. It does mean the field needs more randomised controlled trials before the picture is settled.

Is There a Case for LLLT After a Hair Transplant?

One of the more promising uses of low-level laser therapy is in post-transplant care. After a hair transplant, patients often use non-invasive treatments that can support and graft survival. Hair transplant specialists frequently recommend LLLT as part of an regime. This is especially the case for people who want to get the most from their results. The rationale is that LLLT after a transplant may improve graft anchoring and, in turn, the overall survival of the transplanted hairs. Some do LLLT can speed recovery by improving blood flow to the grafts and reducing inflammation. However, these trials are small in number and the fall short of statistical .

What are the Different LLLT Hair Devices?

It helps to separate professional from at-home LLLT. Both use devices that emit low-level lasers onto the scalp, and the main difference lies in their power and precision. The devices used in clinics tend to be more powerful, so they offer deeper scalp penetration and more targeted stimulation. At-home devices, by contrast, trade intensity for convenience and lower cost. This means they need more time, regular use and consistency to deliver.

LLLT hair devices come in several forms, each designed to suit a different lifestyle and treatment preference. The most common options include the following.

Whatever the format, the success of LLLT largely comes down to consistent, regular use. Many at-home devices are designed for daily or twice-weekly use. courses usually involve a set number of sessions over a defined period, followed by less frequent maintenance. It is not entirely clear whether stopping brings the hair loss back, but it is probably a therapy like other non-surgical treatments.

How Long Does it Take to See Results from LLLT?

One of the most common questions about LLLT is how long results take to show. Experiences vary, but most people start to notice improvements in hair texture, thickness and growth around the 12-week mark. For some this sooner and for others a little longer. It depends on the extent of the hair loss and how consistent the treatment is. LLLT does ask for patience, since regrowth takes time. To improve your odds, you may want to use it alongside other hair such as , or .

LLLT is not for everyone, and its success depends on the nature of your hair loss and your individual circumstances. It works best for people in the early stages of or hair loss, meaning mild to moderate androgenetic alopecia. It can also help people who have had a hair transplant and want to the survival and growth of the grafts. Where hair loss is advanced and the follicles have been dormant for a long time, the success rate tends to be lower. In that situation you may need other treatments alongside or instead of LLLT, such as or a hair transplant. Several hair loss clinics, including our own online clinic, also offer topical prescription hair growth treatments. Our cover personalised topical serums and .

What are the Risks & Side Effects?

Part of the appeal of LLLT is that it is largely safe, with few side effects and no downtime. The risk of major side effects is very low, as long as you use an appropriate device and follow the instructions at home. The lasers in LLLT are low-energy, so they do not damage the skin or the tissue beneath the scalp. Some people do notice mild scalp redness or a sensation of warmth during or after treatment. These effects tend to be short-lived, though. Even so, it is always wise to follow the manufacturer’s guidelines and check with a professional before starting anything new.

How Do You Maximise Your Chances of Success with LLLT?

Whether you have treatment or use an at-home device, a few habits improve your odds. They mostly come down to respecting that hair loss has many overlapping causes, so a holistic approach usually works best. Our top tips for getting more from LLLT include the following.

Low-level laser therapy offers a promising option for people with thinning hair or hoping to improve their results after a transplant. So far, the evidence on LLLT hair results is . However, it is not for everybody and it does not address every type or severity of hair loss. The field needs more research to pin down how effective it is and when it helps most. Until then, you can improve your chances by pairing it with other hair loss treatments and looking after your overall health.

We understand that hair loss is a deeply personal journey. This is why we created personalised through our online skin clinic. Our doctors treat hair loss with bespoke compounded treatments designed around you, using actives such as , , and where appropriate. We also treat skin concerns including , , and . Book a or submit your today. Your journey towards great skin and hair starts here.