Red Light Therapy for Skin and Hair: What Skincare Experts Say
Masks, panels, beds and hair caps. What red light actually does, what the research shows for wrinkles and hair loss, the melasma question, and what 12 skincare experts said about it on camera.
Red light therapy has gone from clinic rooms to bedside tables, in masks, panels, wraps and hair caps. But can a glowing panel really soften fine lines? Will a cap help thinning hair? Do you need the near-infrared setting too, and is any of it safe if you get melasma?
So what do the experts make of it? Most of the experts we follow back it, for gentle, no-downtime help with fine lines, texture and redness, and as an add-on for thinning hair. Their doubts are narrower, about melasma, near-infrared light on the face and handheld wands.
We went through 29 mentions of red light therapy from 12 skincare experts we track, among them dermatologists, a doctor who specialises in skin of colour and skincare creators who use it every day. Together they give it a Guru Score of 75%. Below, what the experts said sits next to what the studies found, so you can see where the two line up and where the evidence is still thin.
The quick answer
Red light therapy (also called photobiomodulation or low-level light therapy) uses red and near-infrared light to support skin repair and collagen, and, in caps and helmets, to help with hereditary hair loss. Most of the experts we track rate it, with doubts about melasma and some devices. The research backs it best for pattern hair loss, where several meta-analyses found more hair density than sham devices [8, 9]. For wrinkles the trials are smaller and lower grade [2, 3, 4]. Devices vary a lot in how much light they deliver [6], and results depend on regular use.
Before you buy
What to know before you buy a red light device
A format you will keep usingResults build up over months of regular sessions [3, 4]. For skin, a full-face mask beats a wand for coverage.
FDA clearance for hairFor hair loss, look for an FDA-cleared cap or comb [11, 12]. Cleared is not the same as approved [12].
How much light it gives offDevices differ hugely in how much light they deliver, so the same session length can mean very different doses [6].
Eye protection in the boxUse the goggles or eye shields that come with the device, and never look into the light [17, 18].
Red light therapy at a glance
Question
What we found
What is it used for?
Fine lines, texture and redness on the skin, and hereditary hair loss on the scalp [1, 8].
Do skincare experts recommend it?
Yes, with caveats about melasma, near-infrared light on the face and handheld wands.
How strong is the evidence?
Best for pattern hair loss [8, 9]. For skin ageing the trials are small and vary in settings [2].
How long until it works?
Trials judged skin results at about 12 to 15 weeks [3, 4] and hair results at 26 weeks [13].
Is it safe?
Side effects are rare in trials [2, 13], but protect your eyes [17, 18] and go carefully with melasma.
Is an LED mask the same thing?
A red light mask is one form of it. Many LED masks also have blue or other colours.
Red light therapy: what does it do?
Red light therapy shines red and near-infrared light onto the skin or scalp at low power. It does not burn, peel or wound the skin, which is what sets it apart from lasers and peels. The scientific name is photobiomodulation, and older studies call it low-level laser (or light) therapy.
The light is absorbed by structures in the mitochondria, the energy-making parts of your cells. That sets off a chain of changes, including more cellular energy (ATP), more blood flow and changes in cell signalling, which researchers link to repair, collagen production and calmer inflammation [1]. Several of our experts explain it the same way.
It comes in many formats: face masks, handheld wands, flexible pads and wraps, wall panels, full-body beds, and caps, helmets and combs for the scalp. The format matters, because how much light actually reaches your skin varies a lot between devices [6].
The short versionRed light therapy is low-power light that nudges cells to repair, not a laser that wounds the skin. The device decides how much light you actually get.
What do skincare experts say about red light therapy?
Here is what each of them said on camera, with a link to the moment they said it.
Found it very effective for her own dry skin, with plumper, smoother texture, but warns results fade when you stop.
I found it personally to be very effective as someone with a tendency towards dry skin for improving moisture retention as well as for plumping and smoothing. I really did see a visible improvement in skin texture. Results are only as good as you are at maintaining using the device. As soon as you stop, within time everything will kind of go back to the way it once was.Watch ▸
Calls red light caps and helmets FDA cleared and a meaningful add-on to a hair loss regimen when used several times a week.
This is a favorite. So low-level laser and red light devices are FDA cleared for hair loss and do have a solid and growing evidence base. It works by stimulating mitochondrial activity in your follicular cells. This increases energy and extends the growth phase of your hair. Good quality red light cap or helmet that's used consistently, typically several times per week, is definitely a meaningful adjunct to a hair loss regimen.Watch ▸
Likes red light for anti-ageing but avoids the near-infrared setting on her face, which made her pigmentation worse.
Red light is great for anti-aging, however I would be very cautious with a device that has red light and near infrared light on it. I do not recommend using the infrared light setting on your face. The infrared light, especially if you're prone to hyperpigmentation or melasma, it leaves a little bit of an opening there for that. You might get more hyperpigmentation using the infrared light. I'm comfortable using red light on my face.Watch ▸
Enjoyed using a red light mask, but stopped because her melasma looked worse every time.
The problem is that my melasma looked worse every time. If you think about the science of Red Light Therapy, this makes sense. There's a reason we tell you that if you're cooking in the kitchen your melasma is going to look worse. Any form of heat or energy hitting the skin can activate the melanocytes, especially if you're already prone to it and you already have it.Watch ▸
Calls handheld red light wands gimmicky and the wrong format, though she says she is generally a fan of full-face masks.
They're gimmicky, they're really not going to show you a lot of results. The format itself, it's not the correct delivery system for red light in my personal opinion. Red light can do a lot for the skin, but what it's been studied for and what it's really well known for is collagen stimulation.Watch ▸
Key takeawayThe experts who back it talk about modest, steady results that need steady use. The doubts are about melasma, near-infrared on the face and handheld wands.
Where do the experts agree?
The verdicts are mostly warm, and the caveats are where the useful detail sits.
Where they agree
It is gentle, with no downtime, which makes it easy to use often.
Results come from consistent use over months, and fade when you stop.
For hair loss it is an add-on to established treatments, not a replacement.
It is a supplement to good skincare and in-office treatments, not a substitute.
The caveats
Much of the research is small and varies in settings, and reviewers call for independently funded trials [2, 10].
Some experts saw melasma or pigmentation flare, and there is little research on melasma [7].
Devices differ hugely in how much light they deliver [6].
What does the research say about red light therapy?
The evidence is real but uneven, and much of it is small. A 2018 systematic review of 31 randomised trials of LEDs in dermatology gave its strongest grade (B) to acne, cold sores and shingles, and wound healing, and lower grades (C or D) to other skin uses. It flagged small trials, missing blinding, no sham comparison and very different treatment settings [2].
For skin ageing
The trials that exist are encouraging. In a controlled trial in 136 volunteers, 30 sessions of red or red plus near-infrared light improved skin roughness and complexion and raised collagen density on ultrasound compared with untreated controls, and the broader spectrum did no better than red light alone [3]. In a 12 week double-blind trial in 52 women, 660 nm red LEDs improved wrinkles around the eyes [4]. These are small studies, so expect a modest change rather than a facelift.
On safety, a 2023 systematic review found no clinical case linking red or near-infrared light for skin rejuvenation to skin cancer, and called it oncologically safe on current evidence [16].
For hair loss
This is where the evidence is strongest. A 2025 meta-analysis of 38 studies in 3,098 patients found hair density rose significantly with laser and LED therapy compared with placebo in pattern hair loss [8]. An earlier meta-analysis of 11 randomised trials found the benefit in men and women, with combs and helmets, and a bigger effect with less frequent treatment than with more frequent treatment [9]. In one 26 week double-blind trial, a laser comb raised terminal hair density in men and women more than a sham device, with no serious side effects [13].
The caution is about who did the research. A systematic review of the double-blind trials called the results promising but said they must be read with caution, and that larger, longer studies with independent funding are needed [10].
Red light and melasma
Here the experts and the evidence are both unsettled. In a study of healthy volunteers with skin types III and IV, 630 nm red light did not cause darkening, while blue-violet light did [7]. That is reassuring for red light itself, but it did not test near-infrared or people with melasma, and light therapy can stimulate pigment cells in some settings [1]. We did not find a trial of red light therapy in people with melasma, so the personal experiences below are the best guide there is.
The thing to rememberGood evidence for pattern hair loss, promising but small trials for skin ageing, and very little on melasma. Much of the research is small, and some of it was funded by the device makers.
Masks, panels, beds and caps: which format?
The light is the same idea in every format. What changes is how much of it reaches you, and how easy the device is to use consistently.
Face masks
A format many of our experts use at home. Dr. Sam Ellis, a dermatologist, uses one even with lasers in her office, because it is safe and easy to use consistently. Masks vary, though: a 2026 study measured four cosmetic LED masks and found big differences in how much light they gave off, so the same session length can mean very different doses [6]. Our LED mask guide covers masks in more detail, including the blue light setting for acne.
Handheld wands
Kelly Driscoll, a skincare creator, is generally a fan of full-face masks but calls handheld red light wands gimmicky, because they cover such a small area at a time. We found no trials comparing wands with masks.
Panels, wraps and beds
Panels and beds treat a larger area at once. The 136 person trial above used broad-area light units twice a week [3]. Darnell Cox, a healthy-ageing creator, uses panels and wraps every day, and says paying for single red light sessions at a spa makes less sense than owning a device, because results build up over many sessions.
Caps, helmets and combs for hair
These are the devices with FDA clearance. The first laser comb was cleared in 2007 [19], and the FDA's description of that device type is hair growth in men with pattern hair loss, used three times a week for at least 26 weeks [11]. Later caps have been cleared for women too: one 2018 clearance covers men with Norwood Hamilton IIa to V and women with Ludwig-Savin I to II pattern hair loss, in skin types I to IV, for over-the-counter use [12]. Clearance means the FDA judged the device substantially equivalent to one already on the market [12]; it is not the same as approving it as a drug.
If you remember one thingPick the format you will actually use. For hair, look for an FDA-cleared cap or comb. For skin, a full-face mask beats a wand for coverage.
Red light therapy vs minoxidil for hair loss
Red light caps and minoxidil are not rivals so much as layers. Minoxidil is a medicine with decades of trials behind it; red light is a device that works as an add-on. Dr Dray, a dermatologist, says hair regrowth systems can be a game changer when combined with established hair loss treatments, especially early on. Dr. Mamina, also a dermatologist, rates red light caps as a meaningful add-on, but says that for real pattern hair loss or shedding the gentler options may not be enough on their own, and points to prescription treatments as the tried and true ones.
Whether red light adds to minoxidil is still argued. A 2025 meta-analysis of seven trials found the combination raised hair density more than minoxidil alone [14], while another 2025 meta-analysis of four trials found no significant difference [15]. Our minoxidil guide has the details on that side.
Worth knowingRed light is an add-on for hair loss, not a replacement for minoxidil or a doctor's diagnosis.
How do you use red light therapy?
Follow the device's own instructions. Many masks run on a built-in timer, and Dr. Mamina, a dermatologist, suggests sessions of about 5 to 15 minutes, three to five times a week, for skin.
More is not better
Light therapy often follows a biphasic dose response: a low dose can help more than a high one [5]. In the hair loss meta-analysis, less frequent treatment did better than more frequent treatment [9]. So stick to the session length and frequency on the label rather than doubling up.
Be consistent, and be patient
Skin trials judged results after about 12 to 15 weeks of regular sessions [3, 4], and the hair trials ran for 26 weeks [13]. Dr Dray found it worked for her, but says results fade once you stop. One session will not show you anything.
Protect your eyes
Use the goggles or eye shields that come with the device, and never look into the light. A case report describes retinal damage in a woman after using a blue light LED face mask [17]. Separately, red light shone into the eye is being studied as a treatment for short sight in children, and the American Academy of Ophthalmology reports a US study suggesting several red light instruments could damage the retina [18].
If you have melasma
Start slowly and watch your pigment closely. No BS Beauty says her pigmentation got worse with the near-infrared setting but not with red light alone, and Dr. Vanita Rattan, a doctor who specialises in skin of colour, stopped using a mask because her melasma looked worse each time. Dr. Mamina says it is safe for all skin tones but to start slow with melasma. If a patch darkens, stop and talk to a dermatologist.
Pregnancy
There is little published research on red light therapy in pregnancy. If you are pregnant or breastfeeding, ask your doctor or midwife before you start.
The short versionFollow the label, use it a few times a week for months, wear the eye protection, and ease in if you are prone to melasma.
What can you use red light therapy with?
Red light does not exfoliate or thin the skin, so it sits easily alongside a routine. The usual rule applies: change one thing at a time, so you can tell what is working.
Red light therapy and minoxidil
A common pairing for pattern hair loss. Two 2025 meta-analyses disagree on whether the combination beats minoxidil alone [14, 15], so think of red light as a possible extra rather than a guaranteed boost.
Red light therapy and retinoids
We found no trials of the two together. Dr. Sam Ellis says red light stimulates collagen by a different route from her lasers and topical retinoids, which is why she uses both. Use the device on clean, dry skin and apply your skincare afterwards, unless the device instructions say otherwise.
Red light therapy and sunscreen
Red light is not a substitute for daily sunscreen, and if you are prone to pigmentation, visible light protection matters too: blue-violet light darkened skin in the same study where red light did not [7].
Which red light therapy devices do the gurus rate?
A high score for red light therapy does not carry over to every device that uses it. Format, power and fit all change the verdict. These are the highest-scoring red light devices that at least two experts have rated, ranked by Guru Score.
Frequently asked questions about red light therapy
01
Does red light therapy really work for skin?
It can help, modestly. In a controlled trial in 136 volunteers, red light improved skin roughness and raised collagen density compared with controls [3], and in a 12 week trial 660 nm LEDs improved wrinkles around the eyes [4]. A review of LED trials rated the evidence for most skin uses as lower grade because the studies are small [2]. Most of the experts we track rate it for steady, modest results.
02
Does red light therapy work for hair loss?
For pattern hair loss, the evidence is good. A 2025 meta-analysis of 38 studies found hair density rose significantly compared with placebo [8], and the benefit has been seen in men and women [9]. Reviewers still want larger, independently funded trials [10]. Dr. Mamina, a dermatologist, calls a red light cap or helmet a meaningful add-on to a hair loss regimen.
03
Are red light hair caps FDA approved?
Many are FDA cleared, which is not quite the same as approved. The first laser comb was cleared in 2007 [19], and later caps cover men and women with pattern hair loss in skin types I to IV, for over-the-counter use [12]. Clearance means the FDA judged the device substantially equivalent to one already on the market [12]. Check the clearance for the exact device you are buying.
04
How long does red light therapy take to work?
Think months, not weeks. The skin trials judged results after about 12 to 15 weeks of regular sessions [3, 4], and the hair trials after 26 weeks [13]. The FDA's description of laser combs is three times a week for at least 26 weeks [11]. Dr Dray, a dermatologist, adds that results fade once you stop using the device.
05
How often should you use red light therapy?
As often as the device's instructions say, and no more. Light therapy often has a biphasic dose response, where a lower dose can work better than a higher one [5], and in hair trials less frequent treatment did better than more frequent treatment [9]. Dr. Mamina, a dermatologist, suggests 5 to 15 minute sessions three to five times a week for skin.
06
Red light vs near-infrared: which is better for the face?
There is no clear winner. In one trial, adding a broader spectrum including near-infrared did no better than red light alone [3]. No BS Beauty avoids the near-infrared setting on her face because her pigmentation got worse with it, though she is comfortable with red light. If you are prone to melasma, starting with red light only is the cautious choice.
07
Is red light therapy safe for melasma and darker skin?
It is uncertain for melasma. In one study, 630 nm red light did not darken skin types III and IV, while blue-violet light did [7], but it did not test people with melasma. Dr. Vanita Rattan, a doctor who specialises in skin of colour, stopped because her melasma looked worse each time, and Dr. Mamina says to start slow. Stop if a patch darkens.
08
Do you need eye protection for red light therapy?
Yes. Use the goggles or eye shields that come with the device and never look into the lights. A case report describes retinal damage after use of a blue light LED face mask [17], and the American Academy of Ophthalmology reports a US study suggesting several red light instruments could damage the retina [18].
09
What is the difference between red light therapy and an LED mask?
An LED mask is one way to get red light therapy. Many masks also offer blue light for acne and other colours, while panels, wraps, beds and hair caps use red and near-infrared light over other areas. Masks vary a lot in how much light they give off [6]. Our LED mask guide covers masks on their own.
10
Is red light therapy better than minoxidil for hair loss?
It is better seen as an add-on. Minoxidil is a medicine with a long trial record, and Dr. Mamina, a dermatologist, says the gentler options may not be enough on their own for real pattern hair loss. Whether adding red light to minoxidil helps more is still argued: one 2025 meta-analysis found it did [14] and another found no significant difference [15].
11
Are red light beds and panels worth it?
They treat a larger area, and the 136 person trial that found better collagen density used broad-area light units twice a week [3]. Darnell Cox, a healthy-ageing creator, uses panels at home and says single sessions at a spa make little sense, because results build up over many treatments. As with masks, output varies between devices [6].
12
Can red light therapy cause skin cancer?
The current evidence says no. A 2023 systematic review of red and near-infrared light for skin rejuvenation found no clinical case linking it to skin cancer, and laboratory work showed it did not make healthy cells abnormal [16]. Red light is not ultraviolet light, but it is still no substitute for sunscreen.
13
Is red light therapy safe during pregnancy?
There is little published research on red light therapy in pregnancy or while breastfeeding. It does not involve medicines, but that is not the same as being studied. Ask your doctor or midwife before you start, and follow your device's own warnings.
The experts behind the score
12 experts, 29 mentions, every one traced to a video you can watch. Sponsored takes are excluded.
Avci P, Gupta A, Sadasivam M, Vecchio D, Pam Z, Pam N, Hamblin MR. Low-level laser (light) therapy (LLLT) in skin: stimulating, healing, restoring. Seminars in Cutaneous Medicine and Surgery, 2013. pubmed.ncbi.nlm.nih.gov/24049929/
Jagdeo J, Austin E, Mamalis A, Wong C, Ho D, Siegel DM. Light-emitting diodes in dermatology: A systematic review of randomized controlled trials. Lasers in Surgery and Medicine, 2018. pubmed.ncbi.nlm.nih.gov/29356026/
Wunsch A, Matuschka K. A controlled trial to determine the efficacy of red and near-infrared light treatment in patient satisfaction, reduction of fine lines, wrinkles, skin roughness, and intradermal collagen density increase. Photomedicine and Laser Surgery, 2014. pubmed.ncbi.nlm.nih.gov/24286286/
Nam CH, Park BC, Kim MH, Choi EH, Hong SP. The Efficacy and Safety of 660 nm and 411 to 777 nm Light-Emitting Devices for Treating Wrinkles. Dermatologic Surgery, 2017. pubmed.ncbi.nlm.nih.gov/28195844/
Huang YY, Chen AC, Carroll JD, Hamblin MR. Biphasic dose response in low level light therapy. Dose-Response, 2009. pubmed.ncbi.nlm.nih.gov/20011653/
Baeza-Moyano D, Bernardez AM, Sola Y. Spectral emission variability in commercial led masks for cosmetic use. Photochemical & Photobiological Sciences, 2026. pubmed.ncbi.nlm.nih.gov/42080982/
Duteil L, Cardot-Leccia N, Queille-Roussel C, Maubert Y, Harmelin Y, Boukari F, Ambrosetti D, Lacour JP, Passeron T. Differences in visible light-induced pigmentation according to wavelengths: a clinical and histological study in comparison with UVB exposure. Pigment Cell & Melanoma Research, 2014. pubmed.ncbi.nlm.nih.gov/24888214/
Perez SM, Vattigunta M, Kelly C, Eber A. Low-Level Laser and LED Therapy in Alopecia: A Systematic Review and Meta-Analysis. Dermatologic Surgery, 2025. pubmed.ncbi.nlm.nih.gov/39404126/
Liu KH, Liu D, Chen YT, Chin SY. Comparative effectiveness of low-level laser therapy for adult androgenic alopecia: a system review and meta-analysis of randomized controlled trials. Lasers in Medical Science, 2019. pubmed.ncbi.nlm.nih.gov/30706177/
Delaney SW, Zhang P. Systematic review of low-level laser therapy for adult androgenic alopecia. Journal of Cosmetic and Laser Therapy, 2018. pubmed.ncbi.nlm.nih.gov/29286826/
Jimenez JJ, Wikramanayake TC, Bergfeld W, Hordinsky M, Hickman JG, Hamblin MR, Schachner LA. Efficacy and safety of a low-level laser device in the treatment of male and female pattern hair loss: a multicenter, randomized, sham device-controlled, double-blind study. American Journal of Clinical Dermatology, 2014. pubmed.ncbi.nlm.nih.gov/24474647/
Mawu FO, Sondakh ORL, Kairupan TS, Christopher PM. Comparative efficacy and safety of low-level laser therapy and topical Minoxidil combination vs. topical Minoxidil monotherapy in androgenetic alopecia management: a systematic review and meta-analysis of randomized controlled trials. Lasers in Medical Science, 2025. pubmed.ncbi.nlm.nih.gov/40826200/
Alosaimi A, Algarni A, Alharbi A, Alotaibi A, Alomairi A, Alsurayhi M, Alharbi W. Comparative efficacy of minoxidil alone versus minoxidil combined with low-level laser therapy in the treatment of androgenic alopecia: a systematic review and meta-analysis. Journal of Dermatological Treatment, 2025. pubmed.ncbi.nlm.nih.gov/39828269/
Glass GE. Photobiomodulation: A Systematic Review of the Oncologic Safety of Low-Level Light Therapy for Aesthetic Skin Rejuvenation. Aesthetic Surgery Journal, 2023. pubmed.ncbi.nlm.nih.gov/36722207/
Kim TG, Chung J, Han J, Jin KH, Shin JH, Moon SW. Photochemical Retinopathy induced by blue light emitted from a light-emitting diode Face Mask: A case report and literature review. Medicine (Baltimore), 2020. pubmed.ncbi.nlm.nih.gov/32541484/
This guide combines two kinds of information. The expert consensus comes from 29 mentions of red light therapy by 12 skincare experts in their YouTube videos. Each one was read, given a Yay, Mixed or Nay verdict and linked to the moment it was said. Sponsored takes are excluded. The research sections summarise published studies, FDA device records and medical sources, listed in full above.
The Guru Score measures how warmly the experts talk about red light therapy. It is not a measure of clinical effectiveness, and this guide is not medical advice. It has not been reviewed by a doctor.
This guide is general information, not medical advice. The Guru Score reflects how warmly the experts we track talk about red light therapy; it is not a measure of clinical efficacy. Speak to a dermatologist or doctor about a diagnosed skin condition, and before using any medicine.
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