What it is
Low-level laser or light therapy (photobiomodulation) applied to the skin for short sessions.
Experiential support
Laser Therapy
Low-level laser or light therapy, also called photobiomodulation, which applies red or near-infrared light to the skin to support comfort and tissue recovery
CategoryComplementary
SafetyLow risk
Reviewed by Gyfts Editorial Team · Editorial Health Review
25 March 2026
At a glance
Laser Therapy at a glance
Why explore it
Some people use it to help with muscle, joint, tendon, and skin or wound problems.
How it’s experienced
A short, painless session with protective glasses and a handheld probe or panel.
Evidence context
Mixed. Promising for some uses, low-quality or uncertain for others; dose varies.
See the evidence snapshotSafety
Low risk. Protect the eyes and avoid over cancer or the pregnant abdomen without advice.
See staying safeHistory & Origin
About Laser Therapy
Laser therapy, in the sense used here, means low-level laser therapy (LLLT), also called photobiomodulation or cold laser. A handheld or panel device delivers red or near-infrared light to the skin over a sore joint, muscle, tendon, wound, or area of inflammation, usually for seconds to a few minutes per spot. The light is low in power and is not meant to cut or burn tissue, which separates it from surgical lasers and from high-intensity laser therapy.
People use it in physical therapy, chiropractic, dental, dermatology, and complementary health settings. Practitioners describe it as a way to support comfort, tissue recovery, and healing responses, and some people use it to help with muscle and joint pain, tendon problems, and slow-to-settle skin and wound issues. Research is real but uneven. A meta-analysis of 18 trials in 1,462 adults with musculoskeletal disorders found less pain with low-level laser than with control, with large differences between studies, and a 2025 expert consensus supported photobiomodulation for several skin and nerve uses, while a Cochrane review for shoulder tendon problems rated the evidence low in quality.
Results depend on the condition, the wavelength, the dose, and how it is delivered, and not every device or clinic follows evidence-based settings. Laser therapy is generally low risk when eyes are protected and a qualified clinician guides it. It complements care from a doctor or physical therapist and does not replace diagnosis or treatment of a serious problem.
The laser was first demonstrated in 1960, and the therapeutic story began soon after. In 1967 the Hungarian physician Endre Mester at Semmelweis University in Budapest reported that low-power ruby laser light seemed to speed hair regrowth in shaved mice, and he went on to show that low-power helium-neon light could speed wound healing in mice. By the 1970s he was treating people with skin ulcers, and in 1974 he founded the Laser Research Center at Semmelweis Medical University.
Through the following decades the field moved from "laser biostimulation" to "low-level laser therapy," then to "low-level light therapy" once LEDs were used, and finally to "photobiomodulation," a term that now covers lasers and LEDs. Early claims often outran the evidence, and regulators have acted against firms that claimed a device could treat hundreds of diseases. More recent work has tightened the science. The World Association of Laser Therapy (WALT) has published dosage recommendations, and in 2025 a panel of 21 international experts published an evidence-based consensus in the Journal of the American Academy of Dermatology. Today the therapy is offered by physical therapists, dentists, dermatologists, chiropractors, and complementary practitioners, with training and rules varying by country and by device class.
Mechanism
How it works
The proposed mechanism is that light is absorbed by cells and may change their energy use, though how much this matters for symptoms is still being studied.
- Light DeliveryRed or near-infrared light is applied to the skin over the area.
- AbsorptionCells in the tissue absorb the light, mainly in the mitochondria.
- Cell ResponseEnergy use and signaling in the cells may change.
- Tissue EffectsInflammation, blood flow, and recovery may be influenced.
- Course of VisitsSeveral sessions are used, with progress reviewed along the way.
Your first visit
What to expect from a session
A typical session outline to help you feel prepared
Clinics work differently, but a first laser therapy visit often follows a shape like this. You can ask about any step before you book.
History and Goals
The clinician asks about your condition, diagnosis, medicines, skin sensitivity, and what you hope will improve.
Safety Screening
They check for cancer, pregnancy, implanted devices, open wounds, and light-sensitizing medicines before starting.
Eye Protection
You and the clinician put on protective glasses, and the area to be treated is cleaned and exposed.
Treatment
A handheld probe or panel delivers light over each area for a set time. Most people feel nothing or gentle warmth.
Plan and Expectations
You agree how many visits to expect, how progress will be judged, and what is realistic given the research.
Aftercare
You get simple aftercare advice, what to watch for, and when to contact the clinic or your doctor.
The Evidence
Evidence context
What research says about laser therapy, where the evidence is strong, and where important gaps remain.
Overall pictureModerate evidence
Promising findings, but study quality varies widely
Laser therapy has a growing research base with moderate support for certain pain and tissue-healing applications. Evidence quality is uneven across conditions, and large-scale trials remain limited.
Where the evidence is strongestModerate evidence supports laser therapy for acute musculoskeletal pain and wound healing.
Meta-analyses and systematic reviews show the most consistent findings for acute pain relief and tissue repair. Evidence for chronic pain and specific injuries is more mixed. Study heterogeneity in laser parameters, session protocols, and outcome measures makes direct comparison across trials difficult.
Research landscapeResearch has grown substantially over two decades, though many studies remain small or regionally limited.
Much of the foundational research originated in Eastern Europe and the Soviet Union from the 1970s onward. More recent trials are broader in scope, but many are still small, lack adequate control groups, or use inconsistent laser parameters. Regulatory clearance by bodies such as the FDA reflects device safety review, not a comprehensive proof of effectiveness.
Known research limitationsSignificant gaps remain, particularly for chronic conditions and long-term outcomes.
High-quality, large-scale randomised controlled trials are limited in number. Variability in wavelength, power output, and treatment duration across studies makes it hard to draw firm conclusions. Findings from one laser device or protocol may not apply to another. Consumers should be cautious of inflated outcome claims not supported by the available evidence.
Safety and contraindicationsLaser therapy is generally low-risk when applied correctly, but specific contraindications apply.
Direct laser exposure to the eyes carries a retinal damage risk; protective eyewear is essential. Application over cancerous lesions, during active chemotherapy, or over the abdomen during pregnancy requires prior medical clearance. People with pacemakers, active infections, or photosensitising medications should consult their healthcare provider before proceeding.
Choosing a practitionerPractitioner training and equipment quality vary considerably across settings.
Laser therapy is offered across physical therapy, complementary health, and medical settings. Training standards and device quality differ widely. Ask about the practitioner's qualifications, the specific device used, and the evidence base for your intended application. Laser therapy is not a substitute for professional assessment of an underlying condition.
How laser therapy fits within careLaser therapy is typically used alongside, not instead of, conventional care.
Most evidence positions laser therapy as a complementary approach used in conjunction with physiotherapy, rehabilitation, or medical management. It is not intended to replace professional assessment or ongoing care for serious conditions. Discussing its use with your primary healthcare provider helps ensure it fits appropriately within your broader health plan.
Safety first
Staying safe
General guidance to help you decide whether this approach is appropriate for you. This is informational only and not a substitute for medical, psychological, or professional advice.
Check with a professional first
If you are pregnant, managing a health condition, recovering from injury or surgery, or taking medication, consult a qualified healthcare professional first.
See specific guidance
- Laser therapy is generally low risk, but protect the eyes: the clinician and you should wear suitable eyewear, and light should not be aimed at the eyes. Avoid treatment directly over a known or suspected cancer, over the pregnant abdomen, or over the thyroid unless your doctor has agreed. Tell the clinician about medicines or creams that make skin sensitive to light, a history of skin cancer, epilepsy that is triggered by light, a pacemaker or implanted device, and any open wound or infection. Mild skin irritation or temporary soreness can occur.
- Laser therapy does not replace diagnosis. New or worsening pain, a wound that is not healing, numbness, fever, or unexplained lumps need a doctor first. High-intensity (class 4) lasers are a different treatment with greater heat and eye risks and should only be used by trained clinicians. Rules on devices and who may use them vary by region, so ask about training and the settings used.
When this may not be suitable
Some situations call for extra care or a different approach. Share any conditions, injuries, or sensitivities with your practitioner before your first session.
Choosing a practitioner
Look for clear boundaries, transparent pricing, and practitioners who avoid fear-based claims or pressure to book frequent sessions.
Possible side effects or aftercare
Mild, short-lived effects such as tenderness, tiredness, or temporary soreness can occur. Rest, hydrate, and tell your practitioner how you respond.
For you?
Is this right for you?
A simple, human way to weigh it up. This is general guidance, not personal medical advice — a qualified practitioner can advise on your situation.
May be a good fit if…
- Laser therapy may suit adults with a diagnosed musculoskeletal, tendon, skin, or mouth problem who want a non-invasive, short-session option alongside exercise, physical therapy, or medical care. Research is real but mixed, so it suits people who want a clinician to explain the device and dose and who can judge progress over several visits.
May not be right if…
- Not suited to undiagnosed pain, a suspected fracture, infection, or cancer in the treated area, or to quick fixes for serious conditions. Avoid use on the eyes or over a pregnant abdomen, and speak with your doctor first if you are pregnant, have a light-triggered seizure disorder, or take light-sensitizing medicines. Step back if a clinic cannot state its dose.
Gyfts is a discovery platform, not a medical provider. Nothing here diagnoses, treats or replaces professional care. In an emergency, contact your local emergency number.
In their words
People often describe it as
painlessquickquietwarmclinicalprecisegentlestraightforward
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Articles & insights
Before you book
Choosing a practitioner
FAQ
Common questions
What is laser therapy?
It means low-level laser therapy, also called photobiomodulation or cold laser, which applies red or near-infrared light to the skin for a short time over a sore or healing area. It is low power and not meant to cut or burn tissue, and it is different from surgical lasers.
Does low-level laser therapy work?
It may help with some conditions, and the evidence is mixed. A meta-analysis of 18 trials found less musculoskeletal pain than with control, but studies differed widely. A Cochrane review rated shoulder tendon evidence as low in quality, and a 2025 consensus supported some skin, wound, and nerve uses.
Is laser therapy safe?
Yes, it is generally low risk when it is done by a trained clinician and the eyes are protected. Mild skin irritation or soreness can occur. Avoid it over known cancer, the pregnant abdomen, or open infection unless your doctor agrees, and tell the clinician about light-sensitizing medicines.
Does laser therapy hurt?
No, for most people it does not. Low-level laser is painless, and you may feel nothing or a little warmth. High-intensity lasers are different and can feel hot, so ask which type is being used. Tell the clinician at once if anything feels uncomfortable.
How many sessions will I need?
It depends on the problem and the device. A course often involves several short sessions over a few weeks, and a good clinician sets goals and reviews progress after the first few visits. If there is no change after a fair trial, it is reasonable to stop and talk with your doctor about other options.
References
Evidence & Research
Educational sources that inform this overview. Inclusion is for context and does not imply endorsement.
- Effects of low-level laser therapy on pain in patients with musculoskeletal disorders: a systematic review and meta-analysis
- Electrotherapy modalities for rotator cuff disease
- High-intensity versus low-level laser in musculoskeletal disorders
- Evidence-based consensus on the clinical application of photobiomodulation
Full citations are maintained by the Gyfts editorial team and reviewed periodically.
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