Redlight Guide

Skin aging / wrinkles

Red light therapy for skin aging, wrinkles, and collagen

Peer-reviewed evidence on red and near-infrared light for facial wrinkles, skin elasticity, and collagen-related skin aging outcomes.

Study count

Cited source set includes 11 records, including 5 source(s) imported from the PlatinumLED news source inventory.

Evidence grade

moderate

Panel relevance

panel-replicable

Bottom line

Skin aging is one of the more panel-relevant red light categories: the studied wavelengths and treatment areas resemble consumer facial panel use more closely than pain or clinical wound protocols.

Consensus: There is reasonable human evidence that red/near-infrared LED photobiomodulation can improve some facial wrinkle, texture, elasticity, and collagen-related measures, but long-term maintenance and universal home-panel dosing remain less settled.

What the studies found

  • A 76-person split-face RCT reported wrinkle reductions up to 36% and skin elasticity increases up to 19% after 633 nm, 830 nm, or combined LED treatment.
  • A 136-person controlled trial of large-area red/NIR light reported improved skin feel, roughness, collagen density, and blinded photo ratings after 30 twice-weekly sessions.
  • A 137-person split-face RCT reported roughly 30% periocular wrinkle-volume reduction after red 660 nm or amber 590 nm PBM at 3.8 J/cm2.
  • A 2020 home-use 637/854 nm LED pilot study found improved skin elasticity without recorded pain or adverse reactions.
  • A 2025 multicenter sham-controlled home LED/IRED mask trial concluded 630/850 nm treatment was effective, safe, well tolerated, and painless for crow's feet.
  • The RCTs are directionally consistent for wrinkle appearance, but they do not prove that all consumer panels, distances, and session lengths are equivalent.
  • Platinum-sourced additions broaden the citation map; imported records need full-text review before converting them into stronger efficacy claims.

Dosage and timing

Wavelengths633, 660, 830 nm
IrradianceNot settled
FluenceOne RCT used 3.8 J/cm2; older LED trials did not always expose all consumer-relevant details in abstracts.
Session timeOften short facial sessions; one RCT used 10 sessions over 4 weeks.
Frequency2-3 sessions per week is the most defensible starting range from the cited facial LED trials.
Duration4-16 weeks in the cited facial/home-device studies; longer maintenance schedules need better evidence.
TimingNo strong consensus on time of day.
Treatment areaFace or periocular region.
Device typesLED panels or LED facial photobiomodulation devices.
NotesKeep claims to cosmetic appearance outcomes, not treatment of medical skin disease.
  • Wavelength consensus is stronger than timing consensus: red around 633-660 nm and NIR around 830 nm are the most directly cited in these records.
  • Dose consensus is moderate for short facial LED protocols, but panel users still need irradiance and distance to estimate J/cm2.
  • No cited trial establishes a universal daily protocol or a clear upper dose.
  • Imported records with missing protocol fields are not used as calculator presets.

Caveats

  • Cosmetic wrinkle outcomes are not the same as treating dermatologic disease.
  • Home panels can differ substantially in irradiance, beam angle, and distance from the skin.
  • Benefits may require repeated sessions and may not persist without maintenance.
  • Some added citations are indirect, mechanistic, animal, or specialist-device studies and should not be generalized to home panels.

Cited peer-reviewed sources

randomized-controlled-trial 76 participants Evidence: moderate; direction: positive Panel relevance: panel-replicable Wavelengths: 633, 830 nm Dose/timing: Twice weekly / 4 weeks, with 3-month follow-up Area: One side of the face Device: Quasimonochromatic LED phototherapy Source

Lee SY, Park KH, Choi JW, et al. Journal of Photochemistry and Photobiology B. 2007.

A double-blind split-face trial compared 830 nm, 633 nm, combined 633/830 nm, and sham light for facial wrinkles.

Source

controlled-trial 136 participants Evidence: moderate; direction: positive Panel relevance: panel-replicable Wavelengths: 611, 650, 570, 850 nm Dose/timing: 9 J/cm2 / Twice weekly / 30 sessions Area: Large-area skin exposure Device: Large-area red and near-infrared light sources Source

Wunsch A, Matuschka K. Photomedicine and Laser Surgery. 2014.

A controlled trial of large-area red and near-infrared light sources reported improved skin feel, roughness, collagen density, and blinded photo ratings.

Source

randomized-controlled-trial 137 participants Evidence: moderate; direction: positive Panel relevance: panel-replicable Wavelengths: 590, 660 nm Dose/timing: 3.8 J/cm2 / 10 sessions over 4 weeks / 4 weeks Area: Periocular face area Device: LED photobiomodulation Source

Mota LR, Duarte IDS, Galache TR, et al. Photobiomodulation, Photomedicine, and Laser Surgery. 2023.

A split-face randomized trial compared 660 nm red light and 590 nm amber light at the same dose for periocular wrinkles.

Source

controlled-trial 24 participants Evidence: low; direction: positive Panel relevance: panel-replicable Wavelengths: 637, 854 nm Dose/timing: Twice weekly / 8 weeks Area: One side of the face Device: Home-use LED facial device Source

Ng JNC, Wanitphakdeedecha R, Yan C. Journal of Cosmetic Dermatology. 2020.

A 24-person split-face pilot study tested a home-use LED device for photoaging skin using combined 637 nm and 854 nm light.

Source

randomized-controlled-trial Study count not extracted Evidence: moderate; direction: positive Panel relevance: panel-replicable Wavelengths: 630, 850 nm Dose/timing: Not fully reported Area: Periocular crow's-feet area Device: Home-used LED and infrared LED facial mask Source

Park SH, Park SO, Jung JA. Medicine. 2025.

A multicenter randomized, double-blind, sham-controlled trial evaluated a home-used LED and infrared LED mask for crow's feet.

Source

systematic-review Study count not extracted Evidence: moderate; direction: no-clear-effect Panel relevance: partially-replicable Wavelengths: Not reported Dose/timing: Established skin-rejuvenation parameters in reviewed literature / Established skin-rejuvenation parameters in reviewed literature Area: Skin Device: Aesthetic PBM skin-rejuvenation devices Source

Glass GE. Aesthetic Surgery Journal. 2023.

A focused systematic review of clinical, in vitro, and animal evidence found no clinical-trial signal linking aesthetic PBM to significant adverse events including new or recurrent malignancy.

Source

other Study count not extracted Evidence: very-low; direction: mixed Panel relevance: partially-replicable Wavelengths: Not reported Dose/timing: Not extracted from Platinum intake metadata / Not extracted from Platinum intake metadata Area: Not extracted Device: Peer-reviewed source; device/protocol requires full-text review Source

Couturaud V, Le Fur M, Pelletier M, Granotier F. Skin Res Technol. 2023.

Imported from the PlatinumLED news source inventory as a peer-reviewed citation. This first-pass record preserves source metadata and needs full-text protocol extraction before it should be used for consumer dosing guidance.

Source

other Study count not extracted Evidence: very-low; direction: mixed Panel relevance: partially-replicable Wavelengths: Not reported Dose/timing: Not extracted from Platinum intake metadata / Not extracted from Platinum intake metadata Area: Not extracted Device: Peer-reviewed source; device/protocol requires full-text review Source

Hernández-Bule ML, Naharro-Rodríguez J, Bacci S, Fernández-Guarino M. Int J Mol Sci. 2024.

Imported from the PlatinumLED news source inventory as a peer-reviewed citation. This first-pass record preserves source metadata and needs full-text protocol extraction before it should be used for consumer dosing guidance.

Source

uncontrolled-trial Study count not extracted Evidence: very-low; direction: mixed Panel relevance: partially-replicable Wavelengths: Not reported Dose/timing: Not extracted from Platinum intake metadata / Not extracted from Platinum intake metadata Area: Not extracted Device: Peer-reviewed source; device/protocol requires full-text review Source

Barolet D. J Clin Aesthet Dermatol. 2018.

Imported from the PlatinumLED news source inventory as a peer-reviewed citation. This first-pass record preserves source metadata and needs full-text protocol extraction before it should be used for consumer dosing guidance.

Source

other Study count not extracted Evidence: very-low; direction: mixed Panel relevance: partially-replicable Wavelengths: Not reported Dose/timing: Not extracted from Platinum intake metadata / Not extracted from Platinum intake metadata Area: Not extracted Device: Peer-reviewed source; device/protocol requires full-text review Source

Avci P, Gupta A, Sadasivam M, Vecchio D, Pam Z, Pam N, Hamblin MR. Semin Cutan Med Surg. 2013.

Imported from the PlatinumLED news source inventory as a peer-reviewed citation. This first-pass record preserves source metadata and needs full-text protocol extraction before it should be used for consumer dosing guidance.

Source

controlled-trial Study count not extracted Evidence: very-low; direction: mixed Panel relevance: partially-replicable Wavelengths: Not reported Dose/timing: Not extracted from Platinum intake metadata / Not extracted from Platinum intake metadata Area: Not extracted Device: Peer-reviewed source; device/protocol requires full-text review Source

Weiss RA, McDaniel DH, Geronemus RG, Weiss MA. Lasers Surg Med. 2005.

Imported from the PlatinumLED news source inventory as a peer-reviewed citation. This first-pass record preserves source metadata and needs full-text protocol extraction before it should be used for consumer dosing guidance.

Source

Last reviewed: 2026-06-15