Everything you need to know about supporting your locks with red light therapy, and why it might just be the missing part of your routine.
From post-natal shedding to menopausal thinning, stress-related hair loss and more – hair loss can happen at various points in our lifetime. When we notice this change, we often reach for supplements and vitamins, thickening serums or volumising sprays, but now there’s a new tool in the haircare arsenal to consider – red light therapy. From understanding how it works to adding it to your haircare routine with ease, we’re sharing all you need to know about boosting your hair health with the help of a little red light.
Red light isn’t just great for the skin, red light relaxation can help you switch off a busy and stressed brain, support the microbiome – and yes, boost your hair health. When used at the right wavelength and applied directly to the scalp, red light therapy can increase blood flow of the scalp and reenergise your hair follicles, giving them a second chance at life. This supports stronger, more durable hair fibres.
An energised follicle has the potential to stay in its active growth phase for longer, producing stronger hair fibres, which shed less over time. Remember – so much of hair loss is actually hair that’s broken before it’s even had a chance to reach its full length. Typically, less breakage means less fallout, which supports faster hair growth. Over time, this can all compound to create luscious locks that look and feel fuller.
How LED hair treatments differ to LED facial treatments
This is an important one. Red light therapy targeted at hair and scalp support requires different considerations to the LED facial masks you might already be using in your routine for your face, neck, or decolletage. This specifically relates to wavelength difference. Typically, 660mn is the exact spectrum associated with follicular stimulation on the scalp. Your device also has to be set to a low irritant level, which is the opposite to what we typically see with skin and face. The Trudermal Halo LED Hair Growth Cap is powered by clinically proven 660nm red light wavelength – a therapeutic spectrum that’s been scientifically shown to improve scalp blood circulation, stimulate follicular activity, and prolong the hair’s natural growth phase – leading to stronger and thicker hair. Featuring 180 medical grade LED bulbs, the program time of this device is set to 10 minutes, meaning you can support your hair growth without disrupting your day or night.
Supporting the scalp
Red light therapy devices for the scalp aren’t just used to support or nourish your hair, they’re also about boosting and nourishing your scalp – the basis of strong and healthy hair. To boost your routine, the Trudermal Regen Hair Growth Serum also supports the scalp. Lightweight and powered by copper peptides, it promotes visibly fuller, healthier hair. When used with the Halo LED device, the Regen Serum forms a powerful at-home system that targets hair loss at both the follicular and cellular levels – creating the optimal environment for stronger, healthier growth.
How to use LED on your hair
For the best results, aim to use your LED hair growth helmet or hat for ten minutes, every other day, on dry hair that’s free of product. Ideally, you’d follow this routine for up to 16 weeks to see the best results. After this phase, you’ll move into maintenance use, meaning you’ll only need to use your device a handful of times per week. This will turn the treatment into more of a ritual over time. For some individuals, you may notice a difference as early as 3-4 weeks, however others might need the full four months before you notice your hairline thickening. This is particularly true for men using the device. Most people will notice visible changes at the front of their hairline first, which tends to be where thinning is the hardest to ignore.
Just keep in mind that if a follicle is completely dormant, red light therapy won’t be able to help much. Why? It’s simple. If the follicle is no longer active, there’s no way to support this follicle as there’s nothing there to stimulate. Rest assured, for the vast majority of people experiencing thinning however, the follicle will still be alive and responsive.
As with any product, procedure or service, it’s best to check with your GP before use – and avoid while pregnant and breastfeeding.
Trudermal Halo I LED Hair Growth Cap
Trudermal Halo LED hair growth cap was designed using advanced LED technology, providing a convenient, non-invasive solution for individuals experiencing hair thinning or reduced hair density.
By delivering targeted 660nm red light therapy directly to the scalp, Halo helps stimulate hair follicles, support scalp health, reduces fall out and encourages stronger, healthier hair growth over time.
FAQ- Have your questions answered...
Does red light therapy actually work for hair growth?
Yes, when used consistently and for the right type of hair loss, red light therapy can be an effective way to support healthier, fuller-looking hair.
Red light therapy uses specific wavelengths of light to stimulate the hair follicles. Research suggests it may help increase cellular energy production, improve blood circulation to the scalp, and encourage follicles to remain in the active growth (anagen) phase for longer.
The strongest evidence is for people experiencing androgenetic alopecia (male and female pattern hair loss), where studies have shown improvements in hair density and thickness over time.
While red light therapy isn't a miracle cure, it is a science-backed, non-invasive treatment that can become an important part of a long-term hair health routine.
How long does it take to see results?
Hair growth takes time, so patience and consistency are essential.
Most people begin to notice improvements after around 3 to 6 months of regular use. In the early stages, you may first notice less hair shedding before seeing visible improvements in thickness or density.
Every person's hair growth cycle is different, so results vary depending on factors such as the cause of hair thinning, age, overall health, and how consistently the device is used.
The key is to think of red light therapy as supporting your hair's natural growth cycle rather than delivering an overnight transformation.
Is Trudermal Halo FDA & TGA approved?
Yes! Trudermal Halo LED hair growth helmet is FDA & TGA approved as a class IIa medical device and conforms to international safety standards.
Can red light therapy regrow lost hair?
Red light therapy is designed to support functioning hair follicles rather than replace follicles that are no longer active.
It tends to be most effective for people experiencing early to moderate hair thinning, where the follicles are still capable of producing hair.
If an area has been completely bald for many years, treatment is generally less likely to stimulate significant regrowth.
The earlier you begin addressing hair thinning, the greater the opportunity to support healthier hair growth.
Does red light therapy work for both men and women?
Yes. Red light therapy has been studied in both men and women experiencing pattern hair loss, with research showing positive outcomes in each group.
It may also be recommended as part of a broader hair health plan depending on the underlying cause of thinning.
Because hair loss can result from hormones, genetics, stress, nutritional deficiencies, medical conditions, or other factors, understanding the reason behind your hair loss is an important first step in choosing the most appropriate treatment.
What types of hair loss can red light therapy help?
The strongest scientific evidence supports the use of red light therapy for hereditary pattern hair loss.
Some people with other forms of hair thinning may also benefit, but this depends on the underlying cause.
Hair loss caused by stress, illness, hormonal changes, nutritional deficiencies, or certain medical conditions often requires those contributing factors to be addressed alongside any light therapy treatment.
If you're unsure what's causing your hair loss, seeking professional advice can help ensure you're treating the problem not just the symptom.
Will my results last if I stop using red light therapy?
Like many hair growth treatments, red light therapy works best when it becomes part of your ongoing hair care routine.
Hair loss is often driven by underlying factors such as genetics or hormones. While treatment can support healthier hair growth, those underlying influences don't simply disappear.
For many people, occasional maintenance treatments help preserve the improvements they've achieved.
The good news is that once you've established a routine, treatments are quick, non-invasive, and easy to incorporate into your weekly schedule making long term hair care more manageable.
What should I look for when choosing a red light therapy device?
Not all red light therapy devices are created equal.
When comparing options, look for a device that:
- Uses clinically researched wavelengths for hair growth.
- Delivers consistent light energy across the scalp.
- Is designed specifically for hair restoration.
- Is supported by scientific evidence.
- Is comfortable enough to use consistently.
- Comes from a reputable company with clear instructions and customer support.
Choosing a quality device backed by research can give you greater confidence that you're investing in technology designed to deliver meaningful results.
Does the hair growth cap work for male receding hairline?
Yes, our Halo Hair Growth Cap is designed to support male pattern hair loss, including a receding hairline. Clinical studies have shown that red LED light therapy can help stimulate active hair follicles, supporting healthier, thicker looking hair and improving overall hair density when used consistently.
One important thing to know is that red LED therapy can only work on hair follicles that are still alive. If a follicle is active but producing thinner, weaker hairs, LED therapy may help encourage healthier growth. However, if a follicle has been inactive for a long time and is no longer viable, light therapy cannot regenerate or create a new hair follicle.
For this reason, the best results are generally seen when treatment begins in the early to moderate stages of hair thinning, before hair follicles have been lost completely.
Our Halo uses 180 medical-grade red LEDs at a clinically recognised 660nm wavelength to deliver consistent coverage across the scalp. With regular use as directed, most clinical studies report visible improvements in hair growth and density after approximately 12–24 weeks, with continued improvements over time.
