You don’t have to choose.
We live with a choice. Soak up the sun and risk the UV. Or cover up and lose the light.
With UV2RED, covering up turns UV into the best part of the sun.
What reaches your skin
Illustrative spectra
Long‑wavelength light goes deepest.
Shorter wavelengths stay closer to the surface.
Red and near‑infrared go deeper.
This is the optical window.
Shorter wavelengths stay closer to the surface. Red and near‑infrared go deeper.
UV2RED converts shorter‑wavelength light into red and near‑infrared light that goes deeper, inside the optical window: 600 to 1000 nm.
UV2RED makes light in this window.
Illustrative. How far light travels depends on wavelength, skin tone and tissue.
UV2RED’s light falls entirely inside the optical window.1
UV2RED’s light falls entirely inside the optical window.1
Illustrative. How far light travels depends on wavelength, skin tone and tissue.
The proof
30%+ more red light
Two blue fabrics.
One makes light.
Same sun, same filter. If substantial red light is detected, it's UV2RED.
Same sun, same filter. If substantial red light is detected, it's UV2RED.
Red + NIR detected under the fabric
Measured at 665–900 nm, under a filter designed to block the sun's red + NIR.
6.35 − 2.53 = 3.82 → 2.53 ÷ 3.82 = +66% more with UV2RED
How each reading was taken
- Measured direct sunlight.
- Place fabric on sensor. Take reading.
- Add filter above fabric. Take reading.
Outdoors in Charlotte, NC · October 5, 2026 · HPCS330Pro spectrometer · Edmund Optics 650 nm short‑pass filter
Ordinary blue fabric
0.26mW/cm²
Halo Skywave
2.79mW/cm²
+66%
more red and near-infrared at the skin with UV2RED
Three passes: +66%, +46%, +40%. We claim 30%+.
How we got the numbers
- Measured direct sunlight.
- Place fabric on sensor. Take reading.
- Add filter above fabric. Take reading.
Total with UV2RED, no filter
6.35 mW/cm²
Added by UV2RED
2.79 − 0.26 = 2.53 mW/cm²
Without UV2RED
6.35 − 2.53 = 3.82 mW/cm²
2.53 ÷ 3.82 = +66% more with UV2RED
Ordinary blue fabric100% polyester · 0.26 is sun's red + NIR that slips past the filter
Halo Skywave93% polyester (UV2RED) · 7% spandex
Outdoors in Charlotte, NC · October 5, 2026 · HPCS330Pro spectrometer · Edmund Optics 650 nm short‑pass filter · 665–900 nm · Readings vary with the sun
Below 665 nm the filter lets sunlight through, so the fabric's own light there can't be measured. That makes +66% conservative.
Always UPF 50+
Sun protection that gives back.
UV2RED gives UV a new job:
making red light.
All UPF 50+ fabrics stop UV.UV2RED stops it too, then gives it a new job: making red light.
Put to work as red light
Both keep UV off your skin.
Ordinary sun fabric
Wasted as heat
UV2RED™
Put to work as red light
Recent UPF tests
- Mesh jersey · ShockwaveUPF 88
- Jersey knit · ShockwaveUPF 1,515
- Jersey knit · HazeUPF 974
- Jersey knit · TidalwaveUPF 285
- Mesh jersey · HazeUPF 111
AATCC TM183 · Intertek Taiwan · November 2024
Recent UPF tests
- Mesh jersey · ShockwaveUPF 88
- Jersey knit · ShockwaveUPF 1,515
- Jersey knit · HazeUPF 974
- Jersey knit · TidalwaveUPF 285
- Mesh jersey · HazeUPF 111
AATCC TM183 · Intertek Taiwan · November 2024
4°F+ cooler
Same sun.
Up to 12.4°F cooler.
Two identical fabrics — UV2RED vs. dyed to match. Both begin at the same temperature, then are placed in full sun. UV2RED levels off. The other keeps climbing.
Temperature under each fabric
Full sun · 1,118 W/m² · Charlotte, NC
Temperature under each fabric · °F
Full sun · 1,118 W/m²
How we tested
K‑type thermocouples under a blue UV2RED test fabric and an identical control dyed to match, on a black absorptive panel in direct sun. Both started at 71.6°F indoors. Seven outdoor readings, in order. Charlotte, NC.
Control still climbing
12.4°F cooler
See the readingsHide the readings
Control still climbing
12.4°F cooler
The research
What researchers have found.
Scientists have studied how red and near-infrared light interacts with the body for decades. They call it photobiomodulation. Here’s the research, area by area.
Most of these studies used lasers and LED panels at controlled doses. One studied UV2RED fabric itself. Read it
Every title links to the paper itself, on PubMed or PubMed Central.
Red and near-infrared light is absorbed by cytochrome c oxidase in mitochondria. Researchers link that to changes in ATP production, nitric oxide and cell signaling.
Researchers have studied red and near-infrared light on fibroblasts, the cells that make collagen and elastin. It is among the most studied uses in dermatology.
Controlled trials have applied light before and after exercise and measured muscle fatigue, endurance and markers of muscle damage.
Physical therapy and sports medicine research has looked at tendons, osteoarthritis, carpal tunnel and chronic pain.
Researchers have tested red and near-infrared light on fat-layer reduction and body contouring, and more recently alongside diet on insulin resistance and inflammatory markers.
Transcranial and whole-body near-infrared light has been studied for depression, cognition and the aging brain, with systematic reviews now appearing. Early, and mostly device-based.
The red light research library
Lightsmart garments are general-wellness apparel. UV2RED converts part of the sunlight hitting the fabric into red and near-infrared light and blocks UV. What red and near-infrared light do in the body is an active area of research. We report what our fabric produces and link to the research rather than promising outcomes. Not intended to diagnose, treat, cure or prevent disease.
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2023
Could red and near-infrared emitting fabric technology improve the severity of psoriasis, polymorphous light eruption, and alopecia areata?Pixley JN, et al. Journal of Dermatological TreatmentUV2RED fabric studySkin
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2021
Photobiomodulation: The Clinical Applications of Low-Level Light TherapyGlass GE Aesthetic Surgery JournalMechanism
-
2024
Photobiomodulation CME Part I: Overview and Mechanism of ActionMaghfour J, et al. J Am Acad DermatolMechanism
-
2021
Photobiomodulation: A review of the molecular evidence for low level light therapyGlass GE J Plast Reconstr Aesthet SurgMechanism
-
2018
Mechanisms and Mitochondrial Redox Signaling in PhotobiomodulationHamblin MR Photochemistry and PhotobiologyMechanism
-
2017
Biological effects and medical applications of infrared radiationTsai SR, Hamblin MR J Photochem Photobiol BMechanism
-
2017
Mechanisms and Applications of the Anti-inflammatory Effects of PhotobiomodulationHamblin MR AIMS BiophysicsMechanism
-
2014
Pre-Conditioning with Low-Level Laser (Light) Therapy: Light Before the StormAgrawal T, et al. Dose ResponseMechanism
-
2012
The Nuts and Bolts of Low-Level Laser (Light) TherapyChung H, et al. Ann Biomed EngMechanism
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1971
Effect of Laser Rays on Wound HealingMester E, et al. Am J SurgMechanism
-
2024
Red and Green LED Light Therapy: A Comparative Study in Androgenetic AlopeciaTantiyavarong J, et al. Photodermatol Photoimmunol PhotomedSkin
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2024
Low-level laser therapy for skin rejuvenation: A safe and effective solution backed by data and visual evidenceShurrab K, et al. J Cosmet DermatolSkin
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2024
The synergistic effect of phototherapy and active substances on hair growthQiu S, et al. J Photochem Photobiol BSkin
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2024
Emerging lasers and light-based therapies in the management of acne: a reviewJean-Pierre P, et al. Lasers Med SciSkin
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2024
LLLT accelerates experimental wound healing under microgravity conditions via PI3K/AKT-CCR2 signal axisYe R, et al. Front Bioeng BiotechnolSkin
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2024
Clinical efficacy of 595 nm pulsed dye laser in combination with supramolecular salicylic acid in the treatment of rosaceaLei W, et al. Arch Dermatol ResSkin
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2024
Low-level laser activates Wnt/beta-catenin signaling pathway-promoting hair follicle stem cell regeneration and wound healing: Upregulate the expression of key downstream gene Lef 1BangHong J, et al. Skin Res TechnolSkin
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2024
Effect of Visible and Infrared Photobiomodulation on Diabetic Foot UlcersTabeie F, et al. J Lasers Med SciSkin
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2024
Comparative efficacy of 2% minoxidil alone against combination of 2% minoxidil and low-level laser therapy in female pattern hair loss: a randomized controlled trial in Chinese femalesYang X, et al. Photodiagnosis Photodyn TherSkin
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2023
Clinical application of 675 nm laser therapy for dorsal hand skin hyperpigmentationAlter I, et al. Skin Res TechnolSkin
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2023
Reverse skin aging signs by red light photobiomodulationCouturaud V, et al. Skin Res TechnolSkin
-
2023
Photobiomodulation With a Continuous Wave Red Laser (660 nm) as Monotherapy for Adult Alopecia Areata: A Case PresentationPalma LF, et al. Lasers Med SciSkin
-
2023
Photobiomodulation Reduces Periocular Wrinkle Volume by 30%: A Randomized Controlled TrialMota LR, et al. Photobiomodul Photomed Laser SurgSkin
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2017
The Efficacy and Safety of 660 nm and 411 to 777 nm Light-Emitting Devices for Treating WrinklesNam CH, et al. Dermatologic SurgerySkin
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2017
A Clinical Review of Phototherapy for PsoriasisZhang P, et al. Lasers Med SciSkin
-
2016
The Effect of Phototherapy on Systemic Inflammatory Process in Patients With Plaque PsoriasisBatycka-Baran A, et al. J Photochem Photobiol BSkin
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2014
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 IncreaseWunsch A, et al. Photomed Laser SurgSkin
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2013
Low-Level Laser (Light) Therapy (LLLT) in Skin: Stimulating, Healing, RestoringAvci P, et al. Semin Cutan Med SurgSkin
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2004
Low-Level Laser Therapy Facilitates Superficial Wound Healing in Humans: A Triple-Blind, Sham-Controlled StudyHopkins JT, et al. J Athl TrainSkin
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2001
Effect of NASA Light-Emitting Diode Irradiation on Wound HealingWhelan HT, et al. J Clin Laser Med SurgSkin
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2024
Photobiomodulation therapy as an adjunct to resistance exercises on muscle metrics, functional balance, functional capacity, and physical performance among older adults: A systematic scoping reviewKumar P, et al. Lasers Med SciPerformance and recovery
-
2024
Therapeutic Photobiomodulation Before Strenuous Exercise Attenuates Shoulder Muscle FatigueCrow JA, et al. J Athl TrainPerformance and recovery
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2024
Can pre-exercise photobiomodulation improve muscle endurance and promote recovery from muscle strength and injuries in people with different activity levels? A meta-analysis of randomized controlled trialsLi BM, et al. Lasers Med SciPerformance and recovery
-
2021
Effect of photobiomodulation therapy on performance and running economy in runners: A randomized double-blinded placebo-controlled trialLanferdini FJ, et al. J Sports SciPerformance and recovery
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2019
Infrared Low-Level Laser Therapy (Photobiomodulation Therapy) before Intense Progressive Running Test of High-Level Soccer Players: Effects on Functional, Muscle Damage, Inflammatory, and Oxidative Stress Markers. A Randomized Controlled TrialTomazoni SS, et al. Oxid Med Cell LongevPerformance and recovery
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2018
Photobiomodulation Therapy on Physiological and Performance Parameters During Running Tests: Dose-Response EffectsDellagrana RA, et al. J Strength Cond ResPerformance and recovery
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2017
Improvement of Performance and Reduction of Fatigue With Low-Level Laser Therapy in Competitive CyclistsLanferdini FJ, et al. Int J Sports Physiol PerformPerformance and recovery
-
2016
830 nm Light-Emitting Diode (LED) Phototherapy Significantly Reduced Return-to-Play in Injured University Athletes: A Pilot StudyFoley J, et al. Laser TherapyPerformance and recovery
-
2016
Immediate Pain Relief Effect of Low Level Laser Therapy for Sports Injuries: Randomized, Double-Blind Placebo Clinical TrialTakenori A, et al. J Sci Med SportPerformance and recovery
-
2016
Light-Emitting Diode Therapy Increases Collagen Deposition During the Repair Process of Skeletal Musclede Melo CA, et al. Lasers Med SciPerformance and recovery
-
2013
Low Level Laser Therapy for Sports InjuriesMorimoto Y, et al. Laser TherapyPerformance and recovery
-
2012
Low-Level Laser (Light) Therapy (LLLT) on Muscle Tissue: Performance, Fatigue and Repair Benefited by the Power of LightFerraresi C, et al. Photonics Lasers MedPerformance and recovery
-
2024
The effect of near-infrared photobiomodulation therapy on the ion content of 50B11 sensory neurons measured through XRF analysisZupin L, et al. J Photochem Photobiol BJoints, muscles and pain
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2024
Evaluation of the efficacy of low-level laser therapy in the treatment of ulnar neuropathy at the elbow in terms of symptoms and clinical and electrophysiological findings: a randomized, prospective, double-blind clinical trialCelik G, et al. Lasers Med SciJoints, muscles and pain
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2024
Effects of low-level laser therapy on symptomatic calcific rotator cuff tendinopathy: A prospective randomized controlled studyTombak Y, et al. Online ahead of printJoints, muscles and pain
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2024
Comparative Investigation of Photobiomodulation in Diabetes-Impaired Alveolar Bone Healing: A Histomorphometrical and Molecular StudyDalirsani Z, et al. Photobiomodul Photomed Laser SurgJoints, muscles and pain
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2024
Effectiveness of Photobiomodulation in Reducing Pain and Disability in Patients With Knee Osteoarthritis: A Systematic Review With Meta-AnalysisOliveira S, et al. Phys TherJoints, muscles and pain
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2024
In-vitro study on type I collagen synthesis in low-level laser therapy on the early ligament fibroblasts' healing processCardenas-Sandoval RP, et al. Lasers Med SciJoints, muscles and pain
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2024
Effects of photobiomodulation and an aerobic exercise on the level of pain and quality of life in women with fibromyalgiaVassao PG, et al. Lasers Med SciJoints, muscles and pain
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2024
Whole-Body Photobiomodulation Therapy Propels the Fibromyalgia Patient into the Recomposition Phase: A Reflexive Thematic AnalysisFitzmaurice BC, et al. BiomedicinesJoints, muscles and pain
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2022
Customized Photobiomodulation Modulates Pain and Alters Thermography Pattern in Patients with Knee Osteoarthritis: A Randomized Double-Blind Pilot StudyPinto NC, et al. Photobiomodul Photomed Laser SurgJoints, muscles and pain
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2017
Photobiomodulation for Achilles TendinopathyAtik OS Photomed Laser SurgJoints, muscles and pain
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2017
Review of Literature on Low-level Laser Therapy Benefits for Nonpharmacological Pain Control in Chronic Pain and OsteoarthritisDima R, et al. Altern Ther Health MedJoints, muscles and pain
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2017
Preconditioning by Light-Load Eccentric Exercise Is Equally Effective as Low-Level Laser Therapy in Attenuating Exercise-Induced Muscle Damage in Collegiate MenNausheen S, et al. J Pain ResJoints, muscles and pain
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2015
The Use of Low Level Laser Therapy (LLLT) for Musculoskeletal PainCotler HB, et al. MOJ Orthop RheumatolJoints, muscles and pain
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2014
Low-level Laser Therapy as a Treatment for Chronic PainKingsley JD, et al. Front PhysiolJoints, muscles and pain
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2014
Low-level Laser Therapy With a Wrist Splint to Treat Carpal Tunnel Syndrome: A Double-Blinded Randomized Controlled TrialFusakul Y, et al. Lasers Med SciJoints, muscles and pain
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2012
Efficacy of Low Level Laser Therapy Associated With Exercises in Knee Osteoarthritis: A Randomized Double-Blind StudyAlfredo PP, et al. Clin RehabilJoints, muscles and pain
-
2010
Low-level Laser Therapy for Acute Neck Pain With Radiculopathy: A Double-Blind Placebo-Controlled Randomized StudyKonstantinovic LM, et al. Pain MedicineJoints, muscles and pain
-
2009
The Effect of Low-Level Laser in Knee Osteoarthritis: A Double-Blind, Randomized, Placebo-Controlled TrialHegedus B, et al. Photomed Laser SurgJoints, muscles and pain
-
2008
The effects of low level laser in clinical outcome and neurophysiological results of carpal tunnel syndromeShooshtari SM, et al. Clin NeurophysiolJoints, muscles and pain
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2003
Efficacy of Low Power Laser Therapy and Exercise on Pain and Functions in Chronic Low Back PainGur A, et al. Lasers Surg MedJoints, muscles and pain
-
2000
Low Level Laser Therapy for Osteoarthritis and Rheumatoid Arthritis: A MetaanalysisBrosseau L, et al. J RheumatolJoints, muscles and pain
-
2022
Effect of laser biostimulation and a low-calorie diet vs. a low-calorie diet alone on insulin resistance, inflammatory biomarkers, and depression among obese postmenopausal women: a randomized controlled trialElsayed MM, et al. Eur Rev Med Pharmacol SciMetabolism
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2013
Low-level Laser Therapy for Fat Layer Reduction: A Comprehensive ReviewAvci P, et al. Lasers Surg MedMetabolism
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2013
Independent Evaluation of Low-Level Laser Therapy at 635 nm for Non-invasive Body Contouring of the Waist, Hips, and ThighsMcRae E, et al. Lasers Surg MedMetabolism
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2011
Efficacy of Low-Level Laser Therapy for Body Contouring and Spot Fat ReductionCaruso-Davis MK, et al. Obes SurgMetabolism
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2009
Low-Level Laser Therapy as a Non-Invasive Approach for Body Contouring: A Randomized, Controlled StudyJackson RF, et al. Lasers Surg MedMetabolism
-
2024
Photobiomodulation therapy mitigates depressive-like behaviors by remodeling synaptic links and mitochondrial functionChen H, et al. J Photochem Photobiol BBrain and mood
-
2024
Unleashing light's healing power: an overview of photobiomodulation for Alzheimer's treatmentRamanishankar A, et al. Future Sci OABrain and mood
-
2024
Effect of photobiomodulation therapy on headache and fatigue in patients with chronic rhinosinusitis: a randomized controlled studyAbdulrashid NA, et al. Lasers Med SciBrain and mood
-
2024
Photobiomodulation improves depression symptoms: a systematic review and meta-analysis of randomized controlled trialsJi Q, et al. Front PsychiatryBrain and mood
-
2024
Systematic review of photobiomodulation for multiple sclerosisOliveira de Andrade Filho V, et al. Front NeurolBrain and mood
-
2024
Photobiomodulation Therapy on Brain: Pioneering an Innovative Approach to Revolutionize Cognitive DynamicsNairuz T, et al. CellsBrain and mood
-
2023
Advances in photobiomodulation for cognitive improvement by near-infrared derived multiple strategiesPan WT, et al. J Transl MedBrain and mood
-
2023
Neuroinflammation mechanisms of neuromodulation therapies for anxiety and depressionGuo B, et al. Transl PsychiatryBrain and mood
-
2022
Photobiomodulation therapy in mood disorders: a systematic reviewMontazeri K, et al. Lasers Med SciBrain and mood
-
2021
Photobiomodulation for the aging brainCardoso FDS, et al. Ageing Res RevBrain and mood
-
2019
Transcranial and systemic photobiomodulation for major depressive disorder: A systematic review of efficacy, tolerability and biological mechanismsCaldieraro MA, et al. J Affect DisordBrain and mood
-
2009
Low infra-red laser light irradiation on cultured neural cells: effects on mitochondria and cell viability after oxidative stressGiuliani A, et al. BMC Complement Altern MedBrain and mood
No studies match that search.
UV2RED is in every Halo.
- 1The optical window runs from about 600 to 1000 nm, where skin absorbs the least light. UV2RED’s measured output falls between 600 and 900 nm.
- 2The UV2RED contribution counts only 665–900 nm, where the filter lets us isolate the fabric’s added light. Output below 665 nm is excluded.