Red Light Therapy for Arms: Skin, Elbows and Muscle Recovery
Red light therapy for arms has its strongest support at the elbow: a review of 13 placebo-controlled trials found that light aimed at the tendon eased tennis elbow pain in the short term. For arm skin, the closest evidence comes from face trials and a whole-body lamp study, and for the biceps from three small exercise trials. Below: what each arm use rests on, skin, elbows, training, trial settings, safety and panel set-up.
Key takeaways
- A 2008 review pooled 13 placebo-controlled trials with 730 patients and found that light aimed at the outer elbow tendon lowered tennis elbow pain more than placebo. Bjordal, 2008
- In that review, one trial of 632 nm red light at the tendon lowered pain by 14.0 mm on a 100 mm scale compared with placebo. Bjordal, 2008
- A 2022 physiotherapy guideline for lateral elbow pain says clinicians "may use laser therapy for improvements in pain and grip strength". Lucado, 2022
- In a crossover trial of 10 volleyball players, a 660 + 850 nm LED cluster on the biceps just before exercise raised contractions from 34.20 to 38.60. Leal Junior, 2009
- In a mostly whole-body lamp study, 30 twice-weekly sessions of red light raised a collagen score by 5.75 points, while untreated controls fell by 0.26. Wunsch, 2014
Does red light therapy for arms work, and for what?
It depends on the part of the arm: the elbow tendons have the best evidence, the biceps have small but positive trials, and arm skin borrows its evidence from face studies. Light does not tone muscle, remove fat or lift loose skin.
| Arm use | Closest evidence | What it showed |
|---|---|---|
| Tennis elbow | Review of 13 placebo-controlled trials, plus a physiotherapy guideline | Short-term pain relief when light was aimed at the tendon |
| Biceps fatigue and soreness | Three small placebo or sham-controlled trials | More repetitions with light before exercise; less soreness at 48 hours with light after |
| Crepey or sun-damaged skin | Face trials and a mostly whole-body lamp study | Smoother texture and higher collagen readings over 4 to 15 weeks |
| Wrists and forearms | Carpal tunnel trials | Short-term pain and grip gains, used with a night splint |
| Keratosis pilaris | Mostly clinic lasers and pulsed light | May help the skin around the bumps; creams do the main work |
| Loose skin, arm fat, toning | Not a light effect | Resistance training tones muscle; surgery removes surplus skin |
All of these studies applied light to the skin from outside the body. Wrists are covered in our guide to red light for carpal tunnel, so this article focuses on the rest of the arm.
Can red light therapy for upper arms help crepey skin?
It may help the texture of crepey skin, with smoother skin and firmer readings over about 8 to 15 weeks. The closest evidence comes from face trials and a whole-body lamp study whose skin readings were taken on the face.
Cleveland Clinic says crepey skin appears most often under the eyes and on the arms, and sun damage is the main cause. Cleveland Clinic, 2024
In the lamp study, 128 adults finished, and the red light group used mostly full-body units with 611 to 650 nm light for 12 to 25 minutes, twice a week. Wunsch, 2014 After 30 sessions, roughness fell by 1.79 in the red light group and rose by 0.95 in untreated controls. The controls were company staff rather than a randomised group, so treat this as encouraging rather than final.
A randomised split-face trial of 76 people, using 633 nm and 830 nm LEDs twice a week for 4 weeks, found wrinkles down by up to 36% and elasticity up by up to 19%. Lee, 2007 The American Academy of Dermatology describes results as "subtle to noticeable". AAD
Pair light with daily SPF 30 or higher and a lotion with lactic acid or retinol, as Cleveland Clinic advises. Our crepey skin guide covers the full routine and timeline.
Will red light tighten loose skin or "bat wings" on the upper arms?
No: light improves the quality of the skin that remains, not the amount of it. Cleveland Clinic notes that exercise "can't tighten loose skin" and that an arm lift is the procedure that removes it.
Loose upper-arm skin comes from ageing, major weight loss, genetics and lymphoedema. Cleveland Clinic Red light firms rather than tightens: expect changes in texture and firmness, not in how much skin hangs. Our loose skin article covers skin after weight loss. After an arm lift, wait until the wound has fully closed and the surgeon agrees, and never use light over stitches.
Does red light therapy tone flabby arms or burn arm fat?
No, it is not a toning or fat-loss method. Arm tone comes from resistance training, and Cleveland Clinic's red light page finds "no scientific evidence" for weight loss.
The same page lists sun-damaged skin and tendonitis pain among possible uses. Cleveland Clinic With arm training, light fits around muscle fatigue and soreness, covered below.
Does red light therapy work for tennis elbow?
This is the best-supported arm use: a 2008 review of 13 trials found short-term pain relief when light was aimed at the tendon. Light works best as an add-on to wrist-extensor exercise.
Mayo Clinic notes that "most people who get tennis elbow don't play tennis". Mayo Clinic The 2008 review pooled 730 patients, many with long-standing pain. Bjordal, 2008
- All trials: pain 10.2 mm lower than placebo on a 100 mm scale.
- 904 nm light at the tendon: 17.2 mm lower, across 5 trials.
- 632 nm red light at the tendon: 14.0 mm lower, in one trial.
- Grip strength: also favoured light at the tendon, and "no serious side-effects were reported".
A 2021 review of 17 tendon trials, 7 at the outer elbow, found light plus exercise lowered pain by 1.06 points out of 10 more than sham plus exercise. Tripodi, 2021
The 2022 guideline gives laser a Grade C "may use" and resisted wrist-extensor exercise a Grade B. Lucado, 2022 Our tendonitis guide covers other tendons.
Where should the light go for tennis or golfer's elbow?
Aim at the tendon where it meets the bony point: on the outer elbow for tennis elbow, on the inner elbow for golfer's elbow. The positive trials in the 2008 review aimed light at that tendon attachment rather than at acupuncture points.
Golfer's elbow affects the tendons that bend the wrist and fingers and "will settle on its own", though this can take months or years. Royal Orthopaedic Hospital It has been studied far less than tennis elbow, so its exercises do the main work:
- Stretch: hold a wrist stretch for 20 to 30 seconds, 3 times, 3 times a day.
- Strengthen: slow lowering wrist exercises, 3 sets of 10, 3 times a day.
For tennis elbow, NHS Wales lists rest from the aggravating activity, a hot or cold pack, a forearm strap, and paracetamol or an anti-inflammatory gel. NHS 111 Wales If you use a gel, read the medicines note in the safety section first.
Should you use red light on your biceps before or after an arm workout?
Before, if you can: two small biceps trials found more repetitions and less fatigue with light given just before exercise. After also has support, since daily light following unaccustomed exercise lowered soreness at 48 hours.
- LED before exercise: 10 volleyball players had a 660 + 850 nm cluster on the biceps for 30 seconds, and contractions rose by 12.9%. Leal Junior, 2009
- Laser before exercise: in 9 players, 810 nm light 3 minutes before exercise raised repetitions by 14.5%. Leal Junior, 2010
- Light after exercise: 27 adults had 880 + 660 nm light daily for 5 days after a new biceps workout, and pain at 48 hours was lower than with sham. Douris, 2006
These were small trials in young adults, and arm girth did not change. Our guide on red light before or after a workout covers timing for other muscles.
What settings did the arm light trials use?
Skin trials used twice-weekly sessions for 4 to 15 weeks. Tendon trials used small doses aimed at the tendon over 2 to 4 weeks, and muscle trials used one short session or five daily ones.
| Study | Area | Light | Dose or time | Schedule | Result |
|---|---|---|---|---|---|
| Wunsch, 2014 | Mostly whole body; readings on the face | 611 to 650 nm red lamps | About 8.5 to 9.6 J/cm², 12 to 25 minutes | 2 a week, 30 sessions | Collagen score up 5.75 |
| Bjordal, 2008 (review) | Outer elbow tendon | 904 nm laser; one 632 nm trial | 0.5 to 7.2 J | Varied courses | Pain 17.2 mm and 14.0 mm lower |
| WALT, 2010 | Outer elbow | 780 to 860 nm laser | 4 J total, 1 to 2 points | Daily for 2 weeks, or every other day for 3 to 4 weeks | Dose guidance |
| Leal Junior, 2009 | Biceps | 660 + 850 nm LED cluster | 41.7 J in 30 seconds | One session, just before exercise | Contractions up 12.9% |
| Douris, 2006 | Biceps | 880 + 660 nm diodes | 8 J/cm² at 3 sites | Daily for 5 days after exercise | Less soreness at 48 hours |
The WALT figures come from its dose table, 2010, written for point lasers. These doses do not convert into panel minutes, but the pattern carries over: regular sessions on the skin, small amounts at the tendon, and short sessions near training.
Can you use red light over arm tattoos, sun spots or keratosis pilaris?
Yes over healed tattoos and on skin with keratosis pilaris, with gentler settings to start. Rough, scaly or changing spots need a doctor before any light, because red light is not a spot remover.
- Tattoos: wait until a new tattoo has healed, about two weeks. Over dark ink, start at about 5 minutes and use 12 inches rather than 6.
- Keratosis pilaris: the NHS calls these rough bumps harmless and advises moisturising and avoiding hot baths and harsh scrubs. NHS Light may help the skin around the bumps while lactic acid or urea creams do the main work; see our keratosis pilaris guide.
- Sun spots: rough, scaly patches on the forearms may be actinic keratoses, which a doctor should check first.
Who should not use red light on their arms, and when should you see a doctor first?
Skip the panel if you are pregnant, breastfeeding or preparing for pregnancy, or if you have epilepsy, seizures triggered by light, a thyroid condition or thyroid medication. See a doctor first for elbow pain that lasts beyond 2 weeks of self-care, a sudden pop at the elbow, or skin that tears or bruises easily.
- Medicines and gels: DermNet lists anti-inflammatory drugs such as ibuprofen, diclofenac and ketoprofen, and topical retinoids, among medicines that can make skin sensitive to light. DermNet Our precautions rule out use with photosensitising medication, so check with your pharmacist or doctor before using the device.
- Skin: no use over broken skin, open wounds or fresh tattoos, after sunburn on the body in the past 2 weeks, or for Fitzpatrick skin types V or VI.
- Injury: not as a first step for a hot, swollen or newly injured elbow. Never remove a cast, splint or brace to use light; light comes after the doctor or physio agrees, over intact skin.
- Sleep: not for use while asleep or by anyone unconscious.
- Eyes: wear the supplied goggles with your eyes closed for every session, and never look into the panel.
How do you use a Kivorla panel on your arms?
Use the panel at 12 inches for the skin of the upper arms and forearms, and at 6 inches for an elbow or wrist, for 10 to 15 minutes per area. Goggles go on and eyes stay closed for every session.
The 9-Spectrum Red Light Therapy Panel carries 480, 590, 630, 660, 670, 810, 830, 850 and 1060 nm, each dimmable from 1 to 100%. Our mask is a full-face shell with an eye opening, so the panel is the device for arms.
- Position: hang the panel on a door or wall with the included door hook, pulley, hanging cables and screws, its centre level with your upper arm, or stand it upright on the floor.
- Upper arm skin: stand side-on at 12 inches, outer arm first, then the inner arm, then the other side. Side-on keeps the light off your face.
- Channels for skin: lead with 630, 660, 830 and 850 nm, with 480 nm at its lowest, on clean, dry skin.
- Start gently: 3 to 5 minutes per area with the channels dimmed, then work towards 10 to 15 minutes. Four areas make a long session, so many people do the outer arms one day and the inner arms another.
- Elbow: turn the outer or inner elbow to the panel at 6 inches, aiming where the tendon meets the bony point, with the 630 nm channel on. Use it three to five times a week alongside your exercises, and judge it at three to four weeks.
- Wrists and forearms: both forearms fit side by side in front of the 640 x 230 mm panel at about 6 inches. Do not rest your hands on it; the surface stays at or below 40°C.
- Training days: a short session on the worked biceps or triceps near your workout, at 12 inches.
The tendon trials gave small doses at a few points. To stay closer to that range, use a shorter timer (it starts at 1 minute), turn each wavelength down from 100%, or step back from 6 to 12 inches. If no time is set, the panel stops at 5 minutes. Leave at least 6 hours between 30-minute sessions. Goggles and a controller come in the box.
Standard shipping to the US, UK and Germany is free. Read the precautions before ordering. 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 tennis elbow, tendon injuries or skin conditions. See a GP or physio for elbow pain that does not settle, and a doctor for skin that tears easily or spots that change.