The technology

Light Therapy

Light therapy uses selected wavelengths of light — some visible, some not — that pass into the skin and are absorbed by light-sensitive structures inside your cells. That absorption supports how cells make energy, repair and recover.

The same technology, in different devices, is used across the face and skin, the body and recovery, the scalp and hair, and the light-and-body-clock pathways behind sleep, mood and energy. It is one of the most researched areas in modern skincare and recovery science, with a safety record measured in decades.

Explore AELVAY light-therapy devices
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Light therapy across the body in one calm, premium frame — ideally a two-beat image or a short cut: one person wearing a sculptural LED face mask, and the same or another person seated or lying in front of a full-body light panel. Relaxed, eyes softly closed, the light the only strong colour. A scalp cap can feature as a third beat where it fits.
Scene
A quiet, minimal AELVAY space — spa-meets-laboratory. One or two people, natural skin, no clutter, no packaging in frame.
Camera
Eye-level or a very slight low angle, 50–85mm look. Face-and-shoulders for the mask beat; a wider mid-length for the panel beat so the full-body treatment reads.
Lighting
Soft warm key from camera-left, gentle fill, no hard shadows. The device glow reads warm red-amber; no blue-white tech light.
Colours
AELVAY neutrals only (#DFD9D2 walls, #B1A497 surfaces, natural skin).
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Full-bleed band, subjects weighted to the right two-thirds, clean negative space top-left for the heading. If one image: mask on one side, panel on the other, or a clean split.
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A tighter vertical crop — the mask beat, or a stacked mask-over-panel composition — uploaded to the separate mobile field.
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Desktop 16:9 (21:9 works). Mobile 4:5.
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Desktop ≥ 2800px wide. Mobile ≥ 1400px wide.
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Optional 8–14s silent loop — the mask glow easing on, then a slow pull to the panel. MP4 H.264, ≤ 10MB.
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The same technology, from a face mask to a full-body panel.
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A person in an AELVAY LED face mask and a person in front of a full-body AELVAY light panel, the light glowing warmly.
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The process

How light therapy works

Every wavelength of light carries a specific amount of energy. A few of them — mostly in the red and near-infrared range — are absorbed by your mitochondria and increase how much energy your cells can make. Here is what happens, step by step.

  1. Light reaches the skin

    Red and near-infrared wavelengths pass through the surface of the skin to reach the cells, blood vessels and tissue beneath. These wavelengths are non-UV and non-ionising, so they deliver energy without heat or damage.

  2. Cells absorb the light

    A light-sensitive enzyme inside your mitochondria, cytochrome c oxidase, absorbs these wavelengths. It sits at the centre of the way every cell produces energy.

  3. Cellular energy production increases

    Absorbed light stimulates the mitochondria to make more adenosine triphosphate (ATP) — the fuel for every cellular process — and prompts a brief release of nitric oxide, which relaxes blood vessels and lifts circulation.

  4. Repair and renewal are supported

    With more energy available, cells work more efficiently: they calm inflammation, lower oxidative stress and speed up repair. Over a course of sessions this shows as firmer, clearer, more resilient skin and faster recovery.

This process is called photobiomodulation — the use of specific wavelengths of light to influence how cells behave, without heating or injuring the tissue. The best-understood target is cytochrome c oxidase, an enzyme in the mitochondrial energy chain that strongly absorbs red light (around 630–680 nm) and near-infrared (around 800–850 nm).

Absorption briefly lifts ATP production, releases signalling molecules such as nitric oxide, and shifts the balance inside the cell toward repair: more collagen and elastin activity in the skin, lower inflammatory signalling, and improved local blood flow. Shorter visible wavelengths — blue, green and amber — are absorbed closer to the surface, where they act on bacteria, pigment-producing cells and visible redness.

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An animated cross-section — a beam of red / near-infrared light entering skin, reaching a mitochondrion, cytochrome c oxidase absorbing it, then ATP and a nitric-oxide molecule releasing and a nearby vessel widening.
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Clean line illustration on flat #DFD9D2, 1.25pt #251A12 strokes, one warm accent (#B56A5C) for the beam. Labels in the heading font, small caps. Not photoreal, not cartoon.
Scene
Three labelled layers (epidermis, dermis, subcutaneous) with the mitochondrion enlarged in an inset.
Motion
12–20s seamless loop: light enters → absorbed → ATP + NO release → vessel dilates → reset. Calm easing.
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Full-width within the text column, 16:9.
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Same artwork at 4:3 — labels legible at 360px (min 11px type).
Aspect ratio
16:9 desktop / 4:3 mobile.
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2400 × 1350px, or vector. Video: MP4 H.264, ≤ 12MB, 1080p.
Text-safe area
8% margin all round for labels.
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Red and near-infrared light lift the cell's energy supply and prompt a brief release of nitric oxide.
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Diagram of light reaching a mitochondrion in a skin cell and releasing energy and nitric oxide.
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Wavelengths & modes

Every wavelength and light mode, and what each one does

Each colour of light is absorbed at a different depth and does a different job. Every card shows its face, body, hair and wellness uses.

  • Blue light LED

    Around 460 nm

    ReachesSurface layers of the skin

    Absorbed by pigments inside acne bacteria, triggering a burst of reactive oxygen that destroys them, while calming the oil glands beneath.

    • Face — clears active breakouts and calms oily, congested skin
    • Body — helps treat body acne on the back, chest and shoulders

    Best forActive blemishes, breakout-prone and oily skin

  • Green light LED

    Around 505–530 nm

    ReachesJust beneath the skin's surface, where pigment cells sit

    Reaches the pigment-producing cells and lowers the activity of the enzymes they use to make melanin, without harming the cell.

    • Face — evens tone, fades dark marks and post-breakout marks, calms redness and dullness
    • Body — fades dark marks and uneven tone on other areas of skin

    Best forUneven tone, dark marks, dullness and redness

  • Yellow / amber light LED

    Around 590 nm

    ReachesUpper-to-mid skin, reaching surface blood vessels

    Absorbed close to the surface, where it soothes reactive blood vessels and supports a bright, even, comfortable tone.

    • Face — soothes redness and sensitivity, restores radiance and an even tone
    • Body — calms redness and sensitivity beyond the face

    Best forSensitive, reactive or flushed-looking skin

  • Red light LED

    Around 630–660 nm

    ReachesInto the dermis — the skin's collagen layer

    Absorbed by cytochrome c oxidase in the mitochondria of fibroblasts, lifting cellular energy and driving collagen and elastin production.

    • Face — collagen, fine lines and firmer texture
    • Body — wound healing and skin repair
    • Hair — the core hair-growth wavelength
    • Wellness — evening use that does not disturb sleep

    Best forFine lines, loss of firmness and overall skin quality

  • Near-infrared light LED

    Around 810–850 nm

    ReachesThrough the dermis into muscle, joints and tissue

    Invisible and the deepest-reaching LED wavelength; taken up by mitochondria in deeper tissue and released as a pulse of nitric oxide that widens vessels.

    • Body — muscle recovery, joints, circulation and deep inflammation
    • Wellness — whole-body panels; studied for sleep and general recovery
    • Face — deep dermal support beneath the collagen layer

    Best forRecovery, joint comfort and deep repair

  • Red + near-infrared Combined mode

    Around 660 + 850 nm

    ReachesSurface to deep, in a single session

    Runs visible red and invisible near-infrared together, so the collagen layer and the tissue beneath it are treated at once — the most complete rejuvenation setting.

    • Face & body — complete rejuvenation and recovery in one pass
    • Wellness — the everyday full-body default

    Best forAll-round skin quality — the everyday default

  • Complete (purple) mode Combined mode

    450 + 660 + 850 nm

    ReachesSurface to deep, in a single session

    Runs blue, red and near-infrared together, so a congested scalp environment is calmed at the surface while the follicle and root are supported at depth — the combined output reads as a soft purple glow.

    • Scalp — calms an oily, congested environment while supporting follicle activity and root strength
    • Wellness — a single complete session instead of switching between modes

    Best forComplete scalp support — oil balance, circulation and follicle activity together

  • 1064 nm near-infrared laser Laser

    1064 nm

    ReachesThe deepest reach of any skincare wavelength

    A focused, coherent beam carries further and more precisely than an LED, delivering a stronger, targeted dose to the deep dermis for firming and contour.

    • Face — deep dermal firming, lifting and contour
    • Clinic-grade — a stronger, more targeted dose than an LED

    Best forAdvanced firming, deeper lines and contour

Depth

How far each wavelength reaches

Wavelength decides depth. Shorter wavelengths stay near the surface; longer wavelengths and focused laser carry into the dermis and the tissue beneath.

Benefits

What light therapy can do

One technology, four areas of use. Each benefit is linked to the wavelengths that drive it.

Face & skin

  • Skin rejuvenation

    Red and near-infrared light stimulate fibroblasts to rebuild collagen and elastin, visibly improving firmness, smoothness and overall skin quality.

    630–850 nm

  • Collagen & elastin support

    By energising the cells that produce the skin's structural proteins, light therapy helps restore the support network that keeps skin plump and lifted.

    630–660 nm

  • Fine lines & texture

    Regular sessions soften the look of fine lines, refine the appearance of pores and even out rough or uneven texture for a smoother surface.

    630–660 nm

  • Breakout & acne support

    Blue light targets acne-causing bacteria on the skin while red light calms the inflammation around a breakout, helping clear congestion and prevent new blemishes.

    460 nm + 630 nm

  • Uneven tone & post-breakout marks

    Green and amber light act on pigment-producing cells and visible redness, gradually improving the appearance of dark marks, sun spots and blotchiness for a more even complexion.

    505–590 nm

Body & recovery

  • Muscle recovery

    Near-infrared light reaches muscle tissue to reduce delayed-onset soreness, support protein synthesis and shorten recovery time after training.

    810–850 nm

  • Joint comfort & pain relief

    By calming inflammation and boosting local circulation, near-infrared light offers natural relief for stiff, aching joints and everyday muscular pain.

    810–850 nm

  • Inflammation support

    Light therapy helps modulate inflammatory signalling and reduce oxidative stress, supporting the body's own resolution of redness, swelling and irritation.

    630–850 nm

  • Tissue repair & wound healing

    Red and near-infrared light are used clinically to speed wound closure and support skin and connective-tissue repair, by raising cellular energy and calming inflammation in the area [2, 9].

    630–850 nm

  • Full-body panel treatment

    A standing or lying panel treats large areas at once — back, legs, joints, whole torso — for recovery, circulation and general wellness in a single 10–20 minute session.

    Red + NIR

  • Body blemish support

    Blue light's antibacterial effect on acne isn't limited to the face — it's also used to calm breakouts on the back, chest and shoulders.

    460 nm

  • Body tone & redness

    Green and amber light's tone-evening, redness-calming effect works the same way on the body as it does on the face — fading dark marks and soothing sensitive-looking skin wherever it's needed.

    505–590 nm

Hair & scalp

  • Fuller-looking hair density

    In sham-controlled trials, red light around 650–660 nm significantly increased hair count and density over 16–24 weeks of consistent use [7].

    650–660 nm

  • Thicker individual strands

    Alongside count, trials measure an increase in the diameter of existing hairs, so the hair that is there looks and feels denser [7].

    650–660 nm

  • A longer active growth phase

    Light is proposed to hold more follicles in anagen — the growing phase — and coax resting follicles back into it, which is how density builds over a course [7].

    650–670 nm

  • Less visible thinning

    With consistent use over several months, the most common outcome people report is that a thinning area looks fuller and the parting less obvious [7].

    650–670 nm

Hair & scalp

How light therapy supports hair growth

Hair needs a dedicated scalp device — the right wavelengths, shaped to the head and held close for long enough. This is the pathway it follows.

  1. The right wavelengths reach the follicle

    Red light around 650–670 nm and near-infrared pass through the scalp to the hair bulb and the stem-cell-rich bulge, where growth is controlled. Facial and body devices are not tuned or shaped for this.

  2. Light is absorbed by follicle cells

    Cytochrome c oxidase in the mitochondria of the dermal papilla and the surrounding follicle cells takes up the light — the same absorption step as in skin, in a different target.

  3. Cellular energy and scalp circulation rise

    ATP production increases, nitric oxide is released, and blood flow around the follicle improves, delivering more oxygen and nutrients to a structure with a very high energy demand.

  4. Follicles are nudged toward growth

    Resting follicles are prompted into the anagen phase and growing hairs are held there longer. Over a course of months this shows as more density, thicker strands and a thinning area that looks fuller [7].

Scalp cross-section and hair-growth-cycle illustration to addA clean clinical cross-section of the scalp: the right wavelengths reaching the hair follicle, mitochondria and ATP inside it, blood flow around it, and the hair-growth cycle alongside.Shopify field: “anatomy_diagram”
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A clean, clinical scientific illustration of a scalp cross-section, built in labelled parts: (1) the scalp surface and hair shafts with red / near-infrared light entering from above and reaching down to the hair bulb and the stem-cell-rich bulge; (2) an enlarged inset of a follicle cell with a mitochondrion, a small "ATP" cue and a nitric-oxide molecule releasing; (3) the capillary network around the follicle with blood flow arrows; (4) a small circular diagram of the hair-growth cycle (anagen → catagen → telogen) with the anagen phase highlighted and a note "light may help hold hairs here longer".
Illustration view
Vertical cross-section of skin and one or two full follicles, from the surface to the fat layer, with the insets to the side on thin leader lines.
Style
Line illustration on flat #DFD9D2, 1.25pt #251A12 strokes. One warm accent (#B56A5C) for the light beam and the cell-energy cue, #7F7163 for the blood-flow arrows and secondary labels. Labels in the heading font, small caps. Anatomical but elegant — not a textbook plate, not a hair-loss-ad "before/after".
Labels
Hair shaft, sebaceous gland, hair bulb, dermal papilla, bulge (stem cells), capillary network, mitochondrion, ATP, nitric oxide; and the three cycle phases.
AELVAY colours
#DFD9D2 ground, #B1A497 tissue wash, #251A12 lines and labels, #B56A5C light and cell energy, #7F7163 circulation.
Desktop composition
Centred, 3:2 or 16:9, the cross-section at ~65% width with the insets and the cycle diagram in the margin.
Mobile composition
Portrait redraw at 3:4 — the cross-section on top, the insets and cycle stacked below; type ≥ 11px.
Dimensions & aspect ratio
≥ 2400px wide, or vector. 3:2 / 16:9 desktop, 3:4 mobile.
Text-safe area
Outer 6% clear; keep leader lines inside the frame.
Caption
The right wavelengths reach the follicle, lift its cellular energy and circulation, and may help hold hairs in the growth phase for longer.
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A scalp cross-section showing light reaching the hair follicle, mitochondrial activity, blood flow and the hair-growth cycle.
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Light & biology

Light meets biology

Light is also a timing signal. Through the eyes and the skin it shapes the daily hormone rhythm that runs sleep, mood and energy — for everyone. General daylight sets the clock; red and near-infrared photobiomodulation works at the cell.

  • Melatonin & sleep

    Melatonin sets the body's sleep signal. Bright and blue-rich light in the evening suppresses it, while warm red light does not — and whole-body red-light exposure before bed is being studied for deeper, more restorative sleep [8, 10].

    Evening red

  • Cellular energy & nitric oxide

    Red and near-infrared light lift ATP production in the mitochondria and prompt a brief release of nitric oxide, which relaxes blood vessels and improves the delivery of oxygen and nutrients — the shared mechanism behind most of light therapy's effects [1, 10].

    630–850 nm

  • Dopamine, motivation & focus

    Dopamine drives motivation, focus and reward. Morning bright-light exposure is linked with steadier daytime dopamine signalling, and dedicated near-infrared devices are being researched for their effect on brain mitochondria, alertness and mood [10].

    Bright light + NIR

  • Serotonin & mood

    Serotonin steadies mood and is a building block for melatonin at night. Bright light — ideally daylight, or a bright lamp in darker months — is the best-established non-drug way to support it, and is used clinically for seasonal low mood [10].

    Bright daylight

  • Cortisol & the stress rhythm

    Cortisol should peak in the morning and fall through the day. Getting light early helps anchor that curve; bright light late at night can flatten it. A well-timed rhythm supports energy, focus and calm [10].

    Morning light

  • Circadian rhythm

    A master clock in the brain reads light to keep sleep, hormones, digestion and body temperature on a 24-hour cycle. Consistent light in the morning and dim, warm light at night keep it aligned — the foundation the other pathways sit on [10].

    Light timing

The research

Backed by science

  • 6,000+ Published studies
  • 50+ Years of research
  • Non-UV No ultraviolet, non-ionising
  • FDA-cleared Light-therapy devices in the category

Photobiomodulation is one of the most researched areas in modern skincare and recovery science — thousands of peer-reviewed studies across dermatology, sports medicine and wound healing, and a safety record measured in decades. It uses visible and near-infrared light only: no ultraviolet, nothing ionising, non-invasive and generally well tolerated.

More on the evidence and its limits

Results build gradually and vary from person to person. The strongest clinical evidence is for red and near-infrared light in skin rejuvenation, hair growth and recovery; blue, green and amber light are promising and supported by a growing body of research; focused 1064 nm laser is a more advanced, in-clinic-grade technology with its own literature.

Regulatory clearance applies to individual devices, not to light therapy as a whole — no AELVAY device is described as cleared unless that specific product carries clearance. This page is general education, not medical advice. Anyone who is pregnant, has a photosensitive condition, a history of light-triggered seizures, or takes medication that increases light sensitivity should speak to a healthcare professional first.

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A restrained data-style graphic reinforcing the four figures — 6,000+ published studies, 50+ years of research, non-UV / non-ionising, FDA-cleared devices in the category. E.g. a timeline from the 1960s to today with study-volume growth plus three small icon stats.
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Editorial infographic, flat #DFD9D2 ground, #251A12 type, one #7F7163 accent. No photos, no logos, round figures only.
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Landscape — headline stat left, supporting timeline / bars right.
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16:9, full content width.
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Re-flow to 4:5 — headline stat above the timeline; numbers stay large.
Aspect ratio
16:9 desktop / 4:5 mobile.
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Decades of photobiomodulation research across dermatology, recovery and wound healing.
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A graphic summarising the volume and history of light-therapy research.
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The devices

AELVAY light-therapy devices

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A short real demonstration of a session — picking up the device, switching it on, wearing / positioning it, relaxing, removing it, skin looking calm afterward.
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The same minimal AELVAY space as the hero. One person, natural skin, relaxed. No voiceover.
Camera
A few locked-off shots — wide establishing, mid on the hands / device, close on the lit face. Gentle, no fast cuts.
Lighting
Warm, soft, even; let the device glow register without blowing out.
Colours
AELVAY neutrals; device glow warm. Nothing clinical-blue.
Desktop
16:9, full-width, muted autoplay loop or click-to-play.
Mobile
Provide a 9:16 vertical version if possible; otherwise 16:9 letterboxed cleanly.
Aspect ratio
16:9 (and optional 9:16).
Video length
15–30s. MP4 H.264, ≤ 20MB, 1080p, silent or soft ambient only.
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A hands-free session — a few minutes while you rest.
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A person using an AELVAY light-therapy device through a full treatment.
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AELVAY LED Light Therapy Mask AELVAY LED Light Therapy Mask $100.00 AELVAY LED Hair & Scalp Therapy Cap AELVAY LED Hair & Scalp Therapy Cap $60.00
Explore AELVAY light-therapy devices

Common questions

Frequently asked

What is light therapy?

Light therapy, or LED therapy, is the use of specific colours of light to support the skin and body. Each wavelength is absorbed differently and does a different job — from clearing breakouts to rebuilding collagen. It is non-invasive, painless and free of UV.

What is photobiomodulation?

Photobiomodulation is the scientific name for how light therapy works: light-sensitive structures in your cells absorb particular wavelengths and respond by producing more energy, calming inflammation and accelerating repair.

What is the difference between visible light and near-infrared light?

Visible light — blue, green, amber, red — you can see, and it works on the skin's surface and mid layers. Near-infrared light is invisible and carries more deeply, reaching muscle, joints and tissue for recovery and deep repair.

Which colour is suited to which concern?

Blue for breakouts, green for uneven tone and marks, amber for redness and radiance, red for firmness and fine lines, near-infrared for recovery and deep repair. Many devices combine several in one session.

What is the difference between blue and green light?

Blue light targets the bacteria involved in active breakouts. Green light works on the pigment-producing cells behind dark marks and uneven tone, and helps calm the look of redness. For acne-prone skin they are complementary: blue for the spots, green for what they leave behind.

How often is light therapy normally used?

Most routines start at three to five sessions a week, building toward daily use within the device's recommended limit. Consistency matters far more than long individual sessions.

How long does a session take?

Typically 10 to 20 minutes, depending on the device and wavelength. Hands-free masks and panels let you treat while you relax.

When may results become visible?

A fresh, calm glow is often visible straight away. Skin changes — firmness, tone, fewer breakouts — usually become clear after four to twelve weeks of regular use. Hair and recovery benefits build over a similar period.

Can different wavelengths be combined?

Yes. Combining red and near-infrared is standard for skin and recovery, and many devices layer in blue, green or amber for targeted concerns. Using them together in one session is effective and time-efficient.

Does light therapy contain UV?

No. LED light therapy uses only visible and near-infrared wavelengths. There is no ultraviolet and nothing ionising, so it does not carry the skin-damage or cancer risk linked to sun exposure or tanning beds.

Can light therapy be used by all genders?

Yes. The way light interacts with skin cells, mitochondria and tissue is the same for everyone. Light therapy is for all skin tones and all genders.

Who should speak to a healthcare professional first?

Anyone who is pregnant, has a history of light-triggered seizures, takes medication or uses products that increase light sensitivity (some acne treatments, antibiotics and retinoids), has a photosensitive condition such as lupus, or has an active skin cancer or undiagnosed lesion in the treatment area.

Which AELVAY device should I choose?

It depends on your main goal and the area you want to treat. Explore the AELVAY light-therapy devices below — each page lists its wavelengths, treatment area and recommended routine so you can match it to your skin or recovery needs.

Research and references
  1. Hamblin MR, Liebert A. Photobiomodulation therapy mechanisms beyond cytochrome c oxidase. Photobiomodulation, Photomedicine, and Laser Surgery. 2022;40(2):75–77.
  2. Avci P, Gupta A, Sadasivam M, et al. Low-level laser (light) therapy (LLLT) in skin: stimulating, healing, restoring. Seminars in Cutaneous Medicine and Surgery. 2013;32(1):41–52.
  3. Wunsch A, Matuschka K. A controlled trial to determine the efficacy of red and near-infrared light treatment in reduction of fine lines, wrinkles, skin roughness, and intradermal collagen density increase. Photomedicine and Laser Surgery. 2014;32(2):93–100.
  4. Mota LR, et al. Photobiomodulation reduces periocular wrinkle volume: a randomized controlled trial. Photobiomodulation, Photomedicine, and Laser Surgery. 2023.
  5. Ngoc LTN, Moon JY, Lee YC. Utilization of light-emitting diodes for skin therapy: systematic review and meta-analysis. Photodermatology, Photoimmunology & Photomedicine. 2023;39(4):303–317.
  6. Mima Y, et al. Inhibitory effect of 505 nm green light-emitting diode on melanin synthesis in cellular experiments and a human intervention study. Acta Dermato-Venereologica. 2025.
  7. Suchonwanit P, et al. Low-level laser therapy for androgenetic alopecia: a 24-week randomized, sham device-controlled trial. Lasers in Medical Science. 2019.
  8. Tsai S-W, et al. Effects of photobiomodulation therapy for delayed onset muscle soreness: a systematic review and meta-analysis. Journal of Functional Morphology and Kinesiology. 2025.
  9. Glass GE. Photobiomodulation: the clinical applications of low-level light therapy. Aesthetic Surgery Journal. 2021;41(6):723–738.
  10. Cleveland Clinic. Red light therapy (health information article).
  11. Consumer and clinical light-therapy education from established at-home device brands, including Suēle, HigherDOSE and JOVS, was also reviewed. Full page references and research notes are held in AELVAY's internal research record.