Orange Light Therapy (590 to 630 nm): What It Does for Skin
Orange light therapy uses visible light between yellow and red, about 585 to 620 nm, and nearly all of its skin research sits at two points: 590 nm, which LED makers call amber, and 630 to 633 nm, which is orange-red. At both points, small trials found softer fine lines around the eyes; claims about glow and mood rest on indirect evidence. Below: definitions, depth, each claimed benefit, trial settings, safety and what our devices offer.
Key takeaways
- Encyclopaedia Britannica defines orange as light in the range of 585 to 620 nm, between yellow and red. Britannica
- In a split-face trial of 137 women, 590 nm amber light reduced wrinkle volume around the eyes by 29.9%, against 31.6% with 660 nm red light at the same dose. Mota, 2023
- In a double-blind trial, 72.3% of people treated with 633 nm orange-red light were rated as improved, against 13.3% with sham light. Ablon, 2018
- Oxygenated blood absorbs about 24 times more light at 590 nm than at 630 nm, which keeps amber light in the upper skin. OMLC
- In a clinic series of 900 patients, 90% of those given 590 nm LED light alone reported improvement after 8 sessions over 4 weeks. Weiss, 2005
What wavelength is orange light therapy?
Encyclopaedia Britannica defines orange as light of 585 to 620 nm, with yellow at 570 to 580 nm and red from 620 nm upward. Britannica Colour boundaries are a convention, so check the wavelength in nanometres rather than the colour name.
| Name | Wavelength | Where the name is used |
|---|---|---|
| Yellow | 570 to 580 nm | Britannica's colour scale Britannica |
| Yellow or amber | About 570 to 595 nm, most often 590 nm | LED skin devices and skin studies |
| Orange | 585 to 620 nm | Britannica's colour scale |
| Orange-red | 630 to 635 nm | Skin trials; counted as red in most charts |
| Red | 620 to 750 nm | Britannica; LED guides usually give 620 to 700 nm Britannica |
In skin research, very few trials used the 600 to 620 nm middle on its own. The closest is a controlled trial with a red band of 611 to 650 nm. Wunsch, 2014 The rest cluster at 585 to 590 nm or at 630 to 635 nm.
Is orange light the same as amber or yellow light?
Mostly, yes: 590 nm sits where yellow meets orange, LED makers call it amber, and the same studies are quoted under all three names. Our yellow light therapy guide covers the 590 nm trials in detail.
A 2024 review describes amber as "a light of 590 nm close to red light". Hernández-Bule, 2024
Our guide to LED light therapy colours treats amber as a supporting colour next to red, as trial results have been mixed.
Is 630 nm red or orange light?
It is visible orange-red light, not infrared. Most charts count it as red, and it marks where the red window opens, because blood absorbs far less of it than of 590 nm light.
Our 630 nm vs 660 nm comparison calls 630 nm orange-red and 660 nm deep red; neither has been shown to beat the other. So orange light that reaches 630 nm overlaps with ordinary red light therapy.
How deep does orange light reach into the skin?
Amber light at 590 nm stays in the upper skin, about 0.5 to 2 mm deep, while red reaches further. The main reason is blood: haemoglobin soaks up yellow and orange light far more than red.
A 2015 review gives 0.5 to 2 mm for yellow light and 5 to 10 mm for near-infrared, with red the deepest of the visible colours. Opel, 2015 For oxygenated blood, absorption falls steeply across the orange band, compared with 630 nm. OMLC
- 590 nm: about 24 times more absorption than at 630 nm.
- 600 nm: about 5 times more.
- 610 nm: about 2.5 times more.
- 620 nm: about 1.5 times more.
These are absorption figures for blood in solution, not depth measurements in skin. They explain why 590 nm acts in the upper skin; studies of muscles and joints use near-infrared.
What are the orange light therapy benefits for skin?
The best-supported orange light therapy benefits are softer fine lines around the eyes, seen at both 590 nm and 633 nm. Texture, tone and redness have smaller or uncontrolled studies, and calming or mood claims are not established.
| Claimed benefit | What the studies show | Evidence level |
|---|---|---|
| Fine lines and wrinkles | 590 nm amber and 660 nm red cut wrinkle volume by similar amounts; 633 nm beat sham light | Controlled trials |
| Texture and even tone | Improvement reported in large 590 nm clinic series, mostly self-rated | Early |
| Glow or radiance | Not measured directly; the closest evidence is the texture and smoothness results | Indirect |
| Redness after clinic procedures | Small studies at 590 nm and 635 nm, given in the clinic | Small studies |
| Dark spots | One 10-person pilot at 585 nm; melanin readings fell with 633 nm | Early |
| Calm, mood or sleep | Evening research is about avoiding blue light, not orange light on skin | Not established |
Glow is the most common promise and the least measured. The closest evidence: in a clinic series of 900 patients, 90% of those given 590 nm LED light alone reported improvement, and physicians recorded global improvement in 60%. Weiss, 2005
The American Academy of Dermatology cites a related 90-person trial, which reported gains in texture, fine lines and pigmentation: "One study of 90 patients reported improvement in over 90% of them." AAD These series mostly lacked a control group, so read them as encouraging.
Is orange or red light better for wrinkles around the eyes?
At the same dose, 590 nm amber and 660 nm red reduced wrinkle volume around the eyes by similar amounts, 29.9% and 31.6%. Red has many more trials behind it, so amber works best as an addition to red rather than a replacement.
That split-face trial treated 137 women aged 40 to 65 with 10 sessions over 4 weeks. Mota, 2023 With no untreated group, it shows the two colours performed alike.
At the orange-red end, the evidence includes a sham control. In a double-blind, split-face trial of 76 people, light at 633 nm, 830 nm or both, twice a week for 4 weeks, reduced wrinkles by up to 36%. Lee, 2007
A 2014 controlled trial of 136 people compared red light at 611 to 650 nm with broadband light covering 570 to 850 nm. Wunsch, 2014 Blinded wrinkle ratings improved in 69% of the red group and 75% of the broadband group, against 4% of untreated controls. The authors wrote that broadband light "showed no advantage over the red-light-only spectrum".
The practical reading: red is the base colour for fine lines, and amber can sit alongside it.
Does orange light calm redness after laser or IPL treatments?
Small clinic studies used 590 nm amber and 635 nm orange-red light straight after laser or IPL treatments, and redness settled faster on the treated side. At home, wait until the skin has closed and your practitioner agrees.
In one split-face pilot, 10 people had 635 nm LED light after fractional CO2 resurfacing and then daily for 7 days. Oh, 2013 Redness resolved faster on the treated side, with a clear difference from day 4.
Our guide to red light therapy for redness covers the 590 nm studies and a small 630 nm study in sensitive skin. Light does not close broken capillaries; a dermatologist can advise on those.
Can orange light fade dark spots or melasma?
The evidence is early: one 10-person pilot at 585 nm reported lighter melasma after 8 weekly sessions, and melanin readings fell with 633 nm light in a sham-controlled wrinkle trial. Melasma is a medical condition, so see a dermatologist before using any light device.
The pilot had no control group; our yellow light therapy guide gives its figures. Dai, 2022 The 633 nm melanin result comes from the 76-person trial described above. Ablon, 2018
Sunscreen stays part of the routine: patients in the 590 nm clinic series were all advised to use SPF 30 or higher.
Does orange light help with sleep or mood?
Not as a skin treatment: the sleep research is about avoiding blue light in the evening, and warm, dim light is less disruptive. A 2026 review of lighting trials in dementia care found none that tested orange-spectrum light specifically.
Harvard Health advises: "Use dim red lights for night lights." Harvard Health, 2024 Red light is less likely than blue to shift the body clock and suppress melatonin.
That review included 5 trials and found mixed effects on agitation and slight improvements in sleep. Babhulkar, 2026 Orange glasses in psychiatric research block blue light; they do not shine orange light on skin. For evening routines, see red light therapy for sleep.
How often and for how long did orange light trials run?
The 590 nm trials used short, low-dose sessions, from under a minute to about 10 minutes, 1 to 3 times a week for 4 to 8 weeks. The 633 nm trials ran 2 to 3 sessions a week for 3 to 4 weeks, with 20 minutes per session where stated.
| Study | Light | Dose | Session | Schedule | Main result |
|---|---|---|---|---|---|
| Weiss, 2005 (clinic series) | 590 nm pulsed LED | 0.1 J/cm² | Under 1 minute | 8 sessions over 4 weeks | 90% reported improvement |
| Mota, 2023 (split face) | 590 nm vs 660 nm LED | 3.8 J/cm² | 10 minutes | 10 sessions over 4 weeks | Wrinkle volume down 29.9% and 31.6% |
| Wunsch, 2014 (untreated controls) | 611 to 650 nm, or 570 to 850 nm | About 9 J/cm² | 12 to 25 minutes | Twice a week, 30 sessions | 69% and 75% improved, vs 4% |
| Lee, 2007 (sham) | 633 nm, 830 nm or both | 66 J/cm² at 633 nm | Not stated | Twice a week, 4 weeks | Wrinkles down by up to 36% |
| Bhat, 2005 (single blind) | 633 nm LED | 96 J/cm² | 20 minutes | 3 a week, 3 weeks | Fewer fine lines, softer skin |
The Mota session length comes from its protocol. Mota, 2018 The Bhat and Lee doses come from a 2018 review. Ablon, 2018 Trial doses do not convert into a home session; what carries over is short, regular sessions for about 4 weeks. The Cleveland Clinic describes hand-held devices used 6 to 12 inches from the face for 10 minutes. Cleveland Clinic
Is orange light therapy safe for darker skin and for the eyes?
Short-term use appears safe, and side effects in the trials were mild, such as short-lived redness. The AAD advises eye protection every time and a dermatologist's advice first for darker skin, which is more sensitive to visible light and can be left with longer-lasting dark spots.
Sunglasses are not a substitute for the recommended eye protection. AAD With our panel, wear the included goggles, eyes closed; our guide to red light therapy goggles explains why.
Our precautions rule out use:
- Pregnancy: while pregnant; the panel manual also lists breastfeeding and preparing for pregnancy.
- Seizures: epilepsy; the panel manual also lists seizures triggered by light.
- Thyroid: a thyroid condition or thyroid medication.
- Skin: broken skin or an open wound on the area; for the panel, also sunburn on the body in the past 2 weeks.
- Skin type: the panel is not for Fitzpatrick skin types V or VI.
Some medicines, such as isotretinoin and lithium, make skin more sensitive to light. Cleveland Clinic Our precautions rule out use with photosensitising medication, so anyone taking a medicine should check with their pharmacist or doctor before using the device.
Do Kivorla devices have orange light?
Neither Kivorla device has a dedicated orange light. The panel covers both ends of the orange band, with a 590 nm amber channel and a 630 nm orange-red channel, while the mask uses red, blue and near-infrared light.
The 9-Spectrum Red Light Therapy Panel carries 480, 590, 630, 660, 670, 810, 830, 850 and 1060 nm. Its 590 nm amber band is one of nine wavelengths, and each one dims from 1 to 100% or switches off on its own. There is no channel between 600 and 620 nm.
- Position: hang it on a door or wall with the included door hook, pulley, hanging cables and screws, or stand it upright on the floor.
- Face: goggles on and eyes closed, with the panel side-on to your cheek and jaw, never aimed straight at the face. Treat one side, then the other.
- Distance: 12 inches, the panel's distance for a broad area.
- Channels: 590 nm on a low setting, since the amber trials used low doses; add 630, 660 and 670 nm red for fine lines.
- Timer: the maker suggests 10 to 15 minutes per area. The timer starts at 1 minute, and the panel stops at 5 minutes if no time is set.
- Light: continuous, using the controller; the surface stays at or below 40°C.
To stay close to the studied range, keep the 590 nm band dim, use a shorter timer and stay at 12 inches. Leave at least 6 hours between 30-minute sessions, and judge your skin at about 4 weeks.
The 4-Wavelength Red Light Therapy Mask does not include amber. Its red mode combines 665 nm red with 850 and 1064 nm near-infrared, and its blue mode combines 460 nm blue with 850 nm.
The manual allows 10-minute sessions up to 4 times a week at high brightness, or 15-minute sessions up to 3 times a week after a week of three 10-minute sessions. Never go beyond 20 minutes a day. The full-face shell has an eye opening with no diodes over the eyes; keep your eyes closed and do not stare into the light.
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 melasma or any skin condition. See a dermatologist about persistent redness, melasma or a dark spot that changes, and keep any treatment they advise.