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LED · Mask · BWJ1
LG 프라엘 더마 LED 마스크
LG’s LED face mask; the mask’s wavelengths were not confirmed from official material.
LG Pra.L
Manufacturer claimFirmness · Texture and tone
Technology evidence
—LED wavelengths not published — red/NIR evidence cannot be applied
Product evidenceNo public product-level study found
Research protocol matchUnknown
RegulatoryUnknown
Decision snapshot
Price₩699,980
Technology categoryLED (wavelengths not disclosed)
Technology evidenceNo grade
Product evidenceUnknown
Dose disclosureNone (0/3)
Protocol matchUnknown
Time burdenUnknown
Consumable lock-inUnknown
ManufacturingUnknown
Separate signals only — no combined score.
Technology
LED (photobiomodulation) · general tech evidence B
Red (~630 nm) and near-infrared (~830 nm) light aimed at triggering cellular responses
Dose transparency · None (0/3)
WavelengthNot disclosed
Irradiance (mW/cm²)Not disclosed
Fluence (J/cm²)Not disclosed
Undisclosed values are never estimated; “Not disclosed” is itself information for comparison.
LED evidence by wavelength
LED wavelengths not published — red/NIR evidence cannot be applied
No band inherits another band’s evidence. The technology grade refers to the anti-ageing claim (red/NIR); blue is assessed separately for acne only.
Evidence
LED (photobiomodulation) B — Several randomised controlled trials (e.g. 136 people over 15 weeks with ultrasound-measured collagen density) point the same way. Devices and doses vary, and whether home masks deliver the same dose is a separate question.
Product grade (studies of this model only): A ≥2 independent RCTs (30+ each) · B one RCT or two controlled studies · C uncontrolled, small or maker-linked. Without them the technology grade is shown, except for multi-function devices and LED without published wavelengths. Without a published dose, study results cannot be assumed to apply to this product.
Technology evidenceLED wavelengths not published — red/NIR evidence cannot be applied
Product evidenceUnknown (no study of this model)
Research protocol matchUnknown
Can the effect be attributed to one technology?Yes — LED
Protocol match detail
WavelengthUnknown
IrradianceUnknown
FluenceUnknown
Treatment timeUnknown
Treatment frequencyUnknown
Actual output is not published, so the technology evidence cannot be assumed to apply to this product. Multi-function device studies are never reused as evidence for a single technology.
Clinical studies
Studies of this model
No public product-level study found. We will add any public study the maker points to.
Marketing claim vs evidence
ClaimManufacturer claim“Firmer skin”
EvidenceNo public study found
Measured resultNone
Independent replicationUnknown
Mechanism vs result
Mechanism shownYes
Biological effect shownYes
Visible cosmetic result shownPartial
Check whether the product delivers the dose (J/cm²) used in trials; most products do not publish irradiance.
Outcome susceptibility to placebo / natural variation
High
This does not mean the product has no effect. It shows how easily the reported result could be influenced by expectation, time, swelling, hydration or measurement conditions.
No study compared against a control, so reported change cannot be separated from the factors below.
Natural skin variation · Hydration · Swelling · Lighting · Camera angle · Make-up · Weight change · Sleep · Menstrual cycle · Skincare used alongside · Massage effect
Before / after reliability
Unknown
A: controlled conditions + objective device measurement + blinded assessment · B: mostly controlled · C: partly · D: large lighting/angle differences · F: marketing image. Only photos checked for lighting, camera, angle, expression and distance are graded; photos alone never confirm an effect.
OWNER REALITY
What owners actually experienced
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| Topic | What the evidence says | What owners say |
|---|
| Effect Satisfied with performance | Product evidence unknown · technology — | No data |
| Use Actual use (median) | Recommended protocol unknown | No data |
| Price Owner fair price (median) | Current price ₩699,980 | No data |
| Service Satisfied with support | Warranty unknown | No data |
Not enough owner data yet.Have you used this product? Share your experience. Answers are shown only as aggregates and no personal details are collected.
Owner answers are user reports, not findings. Verified and unverified answers are separated; under 10 responses only counts are shown, under 30 a small-sample note is added.
Treatment burden
Session time not confirmed from official instructions or a study protocol.
Must you keep using it to maintain results?Unknown
Consumable lock-inUnknown
If the effect is small, this time is a cost too. Maintenance needs are shown only when sourced.
Pricing
Retail price₩699,980Lowest observed
Estimated markupNot shown — no BOM or factory-cost basis
Price premium — vs cheapest in the same technology category & formCheapest in categoryConfirmed fact
Lowest observed on Danawa. The BWL1V model is about ₩1.09M · 2026-10-02
“Estimated markup” is used only with a real BOM or factory-cost basis. This product has none, so no number is invented. The price premium above is a ratio of real retail prices.
What is inside typical build · estimated
- LED chips (red / near-infrared, tens to hundreds)
- Flexible PCB or silicone body holding the LEDs
- Driver IC and timer MCU
- Li-ion battery or wired controller
- Plastic/silicone housing, eye shielding
- USB charging cable
The usual build of devices using this technology — not a teardown of this product. The parts total (BOM) is not computed without a basis.
Public wholesale reference · OEM wholesale listing · not a BOM
Plastic 7-colour LED mask$16–24Confirmed fact
Silicone red / NIR (630, 830–850 nm) mask$48–75Confirmed fact
This ratio does not represent manufacturing cost or operating margin. It may include differences in manufacturer, quality control, certification, R&D, logistics, returns, distribution, marketing and after-sales service. The reference is public wholesale listings for unbranded finished masks from Chinese OEM makers (observed 2026-10-02). Same manufacturer not confirmed; no equivalence of output or quality is implied. Alibaba — wholesale LED facial mask listings · Alibaba — private-label LED mask listings
What are you paying for?
HardwareUnknown · reference: similar finished OEM masks $16–75
CertificationUnknown
BrandUnknown
MarketingUnknown
DistributionUnknown
ConsumablesUnknown
Gap to cheapest in categoryUnknown
Not a cost breakdown. Undisclosed items stay “Unknown”.
Cheaper products in the same technology category
No cheaper product in this technology category yet.
Comparable technology category; dose similarity is mostly unknown. Output, wavelength and extras may differ. Equal grades mean neither side has stronger evidence.
Total ownership cost
Device₩699,980
Consumables (gel, pads, cartridges)Unknown
App / subscriptionUnknown
Battery replacementUnknown
1-year cost₩699,980
3-year cost₩699,980
Cost per studied protocol
No study of this model, so no cost per studied protocol is shown.
Cost per result is compared directly only between studies with the same endpoint, measurement method and duration. Ratios across different studies are not computed.
BUYING GUIDE
What to check before buying
LED masks
Evidence is tied to specific wavelengths and doses. Look at the numbers before the number of colours.
Wavelength (nm)Only red/NIR (ageing) and blue (acne) have separate evidence.
Irradiance (mW/cm²)Without it, the product cannot be compared with trial conditions.
Fluence (J/cm²)Output × time; trial results are reported by dose.
Session time and frequencyTotal hours over 12 weeks is the real burden.
FitDistance from the skin reduces the light that arrives.
Eye safetyCheck the manual’s warnings and eye protection.
Studies of this modelTechnology evidence is not product evidence.
Return policyCheck whether opened units can be returned, and for how long.
Evaluation criteria, not a product ranking.
Country · OEM/ODM
Brand🇰🇷 Korea
HQKorea
Made inUnknown
ManufacturerUnknown
Battery made inUnknown
OEM / ODMUnknown
Brand nationality and country of manufacture can differ. Country and OEM are shown only when confirmed by product notices, manuals or import data; OEM structure is never inferred.
Safety · electrical
KC is electrical/radio conformity and is not a Korean medical-device approval number.
Official warnings not yet checked from the manual. Items to check for this technology: Eye protection / light sensitivity · Photosensitising medication
Medical device regulatory status
Korea MFDSNot confirmed — database not searched
FDAUnknown
CEUnknown
ClassUnknown
Clearance or certification is not proof of effect.
Clinical evidence
Studies of this model (graded)None
Claims and related-device studiesNone
Product evidenceUnknown
Issues
Report charging, battery, overheating, burns, app, electrode, LED, weak output, shutdowns or consumable recognition problems. Reports are reviewed before publishing and makers can reply.
Report a problemA/S
WarrantyUnknown
Korea serviceUnknown
Repair availableUnknown
International warrantyUnknown
Return policyUnknown
Return difficultyUnknown · window ?d · opened Unknown · customer pays return Unknown · hygiene exclusion Unknown
Disclosure0/5
ASK OWNERS
Ask owners
Personal details are rejected automatically. Answers are owner experiences, not facts confirmed by AMS.
Sources
Checked 2026-10-02 · The same criteria apply to every product. Send corrections through the report page.