Red Light Therapy for Vitiligo: What the Studies Show
Red light therapy for vitiligo has a small, early evidence base: in clinic studies, red laser light at 632.8 nm brought colour back to many segmental patches on the head and neck, and blue LED light did the same in a series of localised patches. It works best as an add-on to a dermatologist's care, which usually means prescribed creams and narrowband UVB. Below: the studies, UVB versus red light, blue light, settings, creams, timelines, darker skin, safety and home use.
Key takeaways
- In a clinic series of 40 people with segmental vitiligo on the head or neck, 632.8 nm red laser light gave more than 50% repigmentation in 60% of them. Wu, 2008
- In a retrospective series of 30 people with localised vitiligo, 22 had complete repigmentation after 415 nm blue LED light. Lodi, 2023
- The British Association of Dermatologists recommends narrowband UVB as first-line light treatment, "two to three sessions weekly possibly for up to 1 year". BAD guideline, 2022
- Red, near-infrared and blue LEDs give off no ultraviolet light, so they sit alongside dermatologist care and do not replace UVB phototherapy.
- In a study of excimer light, 7 of 16 people with face patches reached 75% or more repigmentation, while no one with patches on the feet passed 25%. Al-Otaibi, 2009
Does red light therapy for vitiligo help?
The closest evidence is encouraging but small: red laser light restored colour in many segmental patches, and blue LED light did so in localised patches. These were clinic studies without control groups, so light belongs alongside a dermatologist's treatment, not in place of it.
A 2008 series from a group in Taiwan used a helium-neon (He-Ne) laser on 40 people with stable segmental vitiligo on the head or neck. Wu, 2008 Light went on each patch once or twice a week, for an average of 17 sessions. With continued treatment, 60% reached more than 50% repigmentation. There was no control group.
| Study | Light | Who | Main result |
|---|---|---|---|
| Wu, 2008 | 632.8 nm He-Ne laser | 40 people, segmental vitiligo on the head or neck | More than 50% repigmentation in 60% |
| Lodi, 2023 | 415 nm blue LED | 30 people, localised vitiligo | Complete repigmentation in 22 of 30 |
| Lan, 2009 | 632.8 nm He-Ne laser | Human pigment cells in the lab | More cell attachment and growth |
In the lab, the same red light helped pigment cells (melanocytes) attach to collagen and multiply, through an effect linked to their mitochondria. Lan, 2009
A 2023 review says He-Ne light can "enhance melanocyte migration and proliferation". He, 2023 The idea is to help pigment cells grow and move into white patches. That differs from tanning: red light does not make skin produce extra melanin the way UV does, as our guide to red light and tanning explains.
Visible light is not yet part of guideline care, though a 2024 expert abstract noted red and blue LED light "can stimulate repigmentation". Leone, 2024
Is red light the same as the UVB light therapy dermatologists use for vitiligo?
No. Dermatology light therapy for vitiligo uses ultraviolet B, mostly narrowband UVB at 311 nm or excimer light at 308 nm, while red, near-infrared and blue LEDs emit no UV at all.
The BAD guideline offers narrowband UVB when creams have not worked or vitiligo is extensive or spreading. BAD guideline, 2022 It can be given in hospital or with a home handheld unit. A review of 6 randomised trials found excimer and narrowband UVB gave similar repigmentation. Lopes, 2016
UVB sits below 400 nm. Red runs from 620 to 700 nm and near-infrared from 800 to 1,100 nm, as our guide to LED light therapy colours explains. The same split runs through our article on red light therapy for psoriasis.
Does red light help segmental vitiligo on the face or neck?
That is where the red light evidence sits: the 2008 series treated segmental vitiligo on the head and neck only. Segmental vitiligo affects one area of the body, while the more common non-segmental type appears in matching patches on both sides.
The 2008 series also measured blood flow in the patches. Wu, 2008 It was raised before treatment and normal afterwards. The American Academy of Dermatology says standard light therapy also works best on the face. AAD
The mask covers the face, but not the jawline, under the chin or the neck, which the panel reaches from the side. Patches close to the eyes need a dermatologist's plan, and eyes stay closed in every session.
Can blue light therapy repigment vitiligo patches?
One retrospective series suggests it can in localised vitiligo: 22 of 30 patients treated with 415 nm blue LED light had complete repigmentation, and the rest partial. The study had no control group, and its abstract does not report the session plan.
The authors suggest blue LED light may be a safe, well-tolerated way to encourage repigmentation. Lodi, 2023
A 2025 review explains that blue light acts on a light sensor in pigment cells called opsin 3, and can "stimulate repigmentation in vitiligoid patches". Lodi, 2025 The same review notes temporary darkening, mainly in skin types IV to VI, which is "usually reversible".
Our mask's blue mode pairs 460 nm blue with 850 nm near-infrared. That is longer than 415 nm, so the study is a guide rather than a match. Darker skin around a white patch makes it stand out more, so blue sessions stay short and at low brightness. Our blue light therapy guide covers timing and eye care.
What settings did the vitiligo light studies use?
The red light series used a 632.8 nm laser at 3.0 J/cm² on each patch, once or twice a week, for an average of 17 sessions. Standard narrowband UVB runs two to three times a week for many months.
| Source | Light | Dose | Sessions per week | Course |
|---|---|---|---|---|
| Wu, 2008 (segmental, 40 people) | 632.8 nm He-Ne laser | 3.0 J/cm² per patch | 1 to 2 | Average of 17 sessions |
| BAD guideline, 2022 | Narrowband UVB, 311 nm | Set by the dermatologist | 2 to 3 | Possibly up to 1 year |
| HI-Light, 2020 (non-segmental, 517 people) | Home handheld narrowband UVB | 0.05 J/cm² to start, raised by 10% | Alternate days | 9 months |
| Al-Otaibi, 2009 (localised, 29 people) | 308 nm excimer | 100 mJ/cm² to start on the body | 2 | Up to 25 sessions, about 13 weeks |
All of this light went on the skin from outside. Seventeen sessions at once or twice a week is roughly 2 to 4 months. Laser and UV doses do not convert into an LED session; what carries over is regular, short sessions, one to three times a week, for months.
Can red light be combined with narrowband UVB, tacrolimus or ruxolitinib cream?
Guideline care already relies on combinations, because light works better with creams than alone. Red light would be one more layer on top, and only with your dermatologist's agreement on timing.
The HI-Light trial gave 517 people home UVB, a steroid cream, or both. HI-Light, 2020 At 9 months, treatment success was 17% with the cream, 22% with UVB and 27% with both.
A meta-analysis of 12 trials found narrowband UVB with a calcineurin cream such as tacrolimus worked better than UVB alone. Sakhiya, 2019 The combination made a response about 1.8 times as likely.
Since February 2026, NICE recommends ruxolitinib cream for non-segmental vitiligo on the face from age 12, after first-line creams. NICE, 2026
The NHS notes that tacrolimus and pimecrolimus can make "skin more sensitive to sunlight". Our precautions rule out photosensitising medication, so check with your pharmacist or doctor about any cream or medicine before using either device. PUVA uses psoralen, a light-sensitising medicine, so it does not go with our devices.
Use the device on clean, dry skin, then apply your prescribed cream afterwards as your dermatologist directs.
How long does light therapy for vitiligo take, and which areas respond best?
Expect months rather than weeks: with UVB, changes can take 1 to 3 months and the full effect 6 months or longer. The face and neck respond best, while the hands, fingertips and feet respond least.
Mayo Clinic gives those timings for narrowband UVB. Mayo Clinic The AAD says light therapy works slowly and that fingertips are harder to treat. AAD
In the excimer study, 29 people completed up to 25 twice-weekly sessions. Al-Otaibi, 2009 Of 16 people with face patches, 7 reached 75% or more repigmentation. Of 11 people with hand patches, 1 passed 75%.
Give a home routine a span similar to the 17 sessions in the red light series. Photograph the same patch in the same light every 4 weeks and share the photos with your dermatologist.
Is red light suitable for vitiligo on darker skin?
Vitiligo shows most on darker skin, and that is also where visible light can darken the skin around a patch. Our panel is not for Fitzpatrick skin types V or VI, and anyone with darker skin should see a dermatologist before using the mask.
Blue light is the colour most linked to darkening, mainly in skin types IV to VI. Lodi, 2025
Our guide to red light therapy for hyperpigmentation covers a study in skin types III and IV where 630 nm red light did not cause darkening, while 415 nm violet light did.
- Pigment-prone skin: the red mode is the gentler mask choice.
- Blue mode: short sessions at 50% brightness, earlier in the day; stop if the skin around a patch darkens.
Can home light make vitiligo worse, and how do you protect white patches?
Heat and burns are the main risk, because skin injury can start new patches about 10 to 14 days later. Keep every session comfortable and never hot, and protect white patches from the sun, since red light is not sun protection.
The AAD warns that "A bad sunburn can worsen vitiligo" and advises avoiding cuts, scrapes and burns. AAD
- Warmth: warm at most. The panel surface stays at or below 40°C; if skin gets warm, step back or dim the near-infrared channels.
- Intact skin only: never over broken skin, a cut or a burn; wait until it has healed.
- Warning signs: stop and see your doctor for stinging, lasting redness, or new white or dark patches.
- Sunscreen: the NHS advises SPF 50 or above on patches, and the AAD a broad-spectrum SPF 30 or above daily. Apply it after a session.
- Tanning: the NHS advises avoiding sunbeds and does not recommend home sunlamps. NHS
Who should not use red light therapy for vitiligo at home?
Thyroid conditions are more common in people with vitiligo, and if you have one or take thyroid medication, our precautions rule out both devices. Pregnancy, epilepsy, photosensitising medication and broken skin also rule them out.
The BAD guideline advises thyroid checks for people with vitiligo. BAD guideline, 2022 Our precautions also cover:
- Pregnancy: both devices; the panel also while breastfeeding or preparing for pregnancy.
- Seizures: epilepsy, and for the panel, seizures triggered by light.
- Skin: broken skin on the area; for the panel, sunburn in the past 2 weeks, or skin types V or VI.
- Children: vitiligo in a child should be managed by a dermatologist, not with a home device.
How do you use a Kivorla mask or panel alongside vitiligo care?
Agree it with your dermatologist first, then use the mask for patches on the face and the panel for patches on the body, starting low and short. Keep your prescribed treatment going and judge progress over months.
The 4-Wavelength Red Light Therapy Mask is a cordless, full-face silicone shell with one eye opening and no diodes over the eyes.
- Red mode: 665 nm red with 850 and 1064 nm near-infrared, the mode closest to the red light studies.
- Blue mode: 460 nm blue with 850 nm near-infrared, closest to the blue LED series.
- Start: 50% brightness for 5 minutes. If the skin around your patches stays even and comfortable, build towards 10 minutes.
- Limits: the manual allows 10 minutes up to 4 times a week at high brightness, or 15 minutes up to 3 times a week after a week of three 10-minute sessions. Never more than 20 minutes a day, counting both modes together.
- Controls: brightness 50, 70 or 90% and a 5, 10 or 15 minute timer, set by handheld controller or voice.
The 9-Spectrum Red Light Therapy Panel suits patches on the hands, arms, trunk and legs. It is not for Fitzpatrick skin types V or VI.
- Channels: 480, 590, 630, 660, 670, 810, 830, 850 and 1060 nm, each dimmable from 1 to 100%. The 630 nm channel is nearest the 632.8 nm studies; set 480 nm to its lowest for pigment-prone skin.
- Position: hang it on a door or wall with the included door hook, pulley, hanging cables and screws, or stand it upright.
- Eyes: wear the supplied goggles with your eyes closed, and never aim the panel straight at your face. See our guide to red light therapy goggles.
- Neck: side-on or with your back to the panel, at neck level.
- Distance: start at 12 inches with the channels low. Use 6 inches for a small patch such as a hand.
- Timer: short sessions in week 1, then build towards 10 to 15 minutes per area. If no time is set, the panel stops at 5 minutes.
- Spacing: at least 6 hours between 30-minute sessions.
The red light series gave small doses to each patch, once or twice a week. To stay close to that range, set a shorter timer (it starts at 1 minute), dim each wavelength well below 100%, or step back to 12 inches.
Read the precautions before ordering. Standard shipping to the US, UK and Germany is free. Under our return and refund policy, returns are accepted within 30 days: an unopened device with its seals intact is refunded less a 10% restocking fee, and an opened device that is undamaged and complete is refunded less 20%.
Kivorla devices are general wellness devices, not medical devices, and are not intended to treat vitiligo. See a dermatologist for diagnosis and treatment, keep the creams or phototherapy they prescribe, and ask them before adding light at home.