When a dermatologist turns on a Fraxel machine, selects a
diode, or activates a cold plasma unit, they're not simply
"doing laser." They're choosing a precise wavelength — a
specific frequency of light energy that behaves in a
completely different way in the skin's layers. Wavelength
determines depth. Depth determines what changes. And what
changes determines the result.
For decades, this knowledge stayed inside clinics. Today,
clinical-grade laser wavelengths are available in devices
you can hold in your hand at home — or deploy in your
salon without a six-figure equipment investment. This guide
explains exactly what each wavelength does, why it matters,
and which skin conditions respond to it.
SECTION 1: WHY WAVELENGTH IS EVERYTHING
Human skin has three main layers: the epidermis (surface),
the dermis (structural layer where collagen, elastin, and
melanocytes live), and the hypodermis (fat layer beneath).
Different wavelengths of light penetrate to different depths:
• Short wavelengths (400–500nm): stay near the surface
• Mid wavelengths (700–1000nm): reach the dermis
• Longer wavelengths (1000–2000nm): penetrate the dermis
based on selective absorption by water in tissue
This is why a 415nm blue light device and a 1927nm fractional
laser cannot do the same thing — they literally cannot reach
the same targets.
SECTION 2: 1450NM — THE COLLAGEN REBUILDER
The 1450nm wavelength is selectively absorbed by water in
dermal tissue. At this frequency, the laser deposits energy
into the dermis without damaging the epidermis, creating
microscopic thermal columns — called Micro-Treatment Zones
(MTZs) — that trigger the skin's wound-healing response.
This response produces new collagen and elastin fibers,
visibly reducing fine lines, improving skin texture, and
restoring structural firmness. The process is called
Non-Ablative Fractional Laser (NAFL) treatment and has
been validated across decades of clinical research.
1450nm is the primary wavelength of the Fraxel Restore
clinical laser system — one of the most studied aesthetic
devices in dermatology.
Clinical conditions it treats:
• Fine lines and wrinkles
• Skin laxity and loss of firmness
• Rough skin texture
• Enlarged pores
• Early signs of photoaging from UV exposure
The OYAY LAB Iris Ice Plus uses 1450nm NAFL technology
with a 360° icy crystal cooling system that actively chills
the epidermis during treatment, protecting the surface while
the laser works in the dermis. Energy output: 3–12mJ/Pulse.
IEC 60825 Class 1 certified. Engineered by Dreame Technology.
SECTION 3: 1927NM — THE PIGMENTATION CORRECTOR
The 1927nm wavelength has the highest water absorption
coefficient in the near-infrared range. This makes it
exceptionally precise: at this frequency, laser energy
deposits at the dermal-epidermal junction — the exact
layer where melanocytes produce melanin, the pigment
responsible for dark spots and hyperpigmentation.
This is why topical serums — including vitamin C, niacinamide,
and alpha arbutin — produce limited results on established
hyperpigmentation. They apply energy at the surface. The
melanin source is below the surface.
1927nm targets the source directly, creating MTZs at the
dermal-epidermal junction that break up melanin deposits
and accelerate the skin's natural replacement cycle.
This is the second channel of the Fraxel Dual clinical
laser system, widely used for melasma and photoaging.
Clinical conditions it treats:
• Hyperpigmentation and dark spots
• Melasma
• Post-inflammatory hyperpigmentation (PIH)
• Sun damage and uneven skin tone
• Age spots
The OYAY LAB Dora uses 1927nm fractional laser technology.
Energy: 2–7mJ/Pulse. IEC 60825 Class 1. No downtime.
Engineered by Dreame Technology.
SECTION 4: 415NM + 830NM — THE DUAL-DEPTH ACNE ELIMINATOR
Acne vulgaris results from Cutibacterium acnes (C. acnes)
bacteria colonizing sebaceous follicles. Effective treatment
requires addressing bacteria at two locations simultaneously:
on the skin surface and inside the sebaceous gland.
This is the biological rationale for dual-wavelength therapy:
415nm (blue light): C. acnes bacteria produce porphyrins
as a metabolic byproduct. The 415nm wavelength is absorbed
by these porphyrins, generating reactive oxygen species
that destroy the bacteria through photodynamic action —
without requiring any topical agent.
830nm (near-infrared): At this wavelength, light penetrates
to the sebaceous gland where bacteria colonize. The
near-infrared energy reduces sebaceous activity, calms
deep follicular inflammation, and creates a hostile
environment for bacterial recolonization.
Treatment time: 8 seconds per individual spot.
Clinical conditions it treats:
• Active acne vulgaris (inflammatory and non-inflammatory)
• Cystic acne
• Sebaceous hyperactivity
• Post-acne inflammation prevention
The OYAY LAB Nova combines 415nm + 830nm in a single
pen-shaped device. Power: 0.5–1W. IEC 60825 Class 1.
No prescription, no antibiotics, no chemicals required.
Engineered by Dreame Technology.
SECTION 5: 940NM — PHOTOBIOMODULATION AND CELLULAR REPAIR
Photobiomodulation (PBM) is the use of light to stimulate
biological processes at the cellular level without generating
heat. The mechanism was first described in the 1960s and
has since been validated in hundreds of peer-reviewed
studies for wound healing, inflammation reduction, and
tissue repair.
The 940nm wavelength is selectively absorbed by cytochrome
c oxidase — an enzyme in the mitochondrial respiratory
chain. When activated, it:
1. Increases ATP (adenosine triphosphate) production —
the energy currency of cellular repair
2. Reduces reactive oxygen species (oxidative stress)
3. Modulates pro-inflammatory cytokine pathways
4. Accelerates fibroblast proliferation and collagen
synthesis
This makes 940nm particularly effective after procedures —
laser sessions, chemical peels, microneedling — when the
skin is inflamed and in active repair mode. Clinical PBM
systems use this mechanism as standard post-procedure care
in advanced dermatology practices.
Clinical applications:
• Post-procedure recovery (after laser, peel, needle)
• Sensitive and reactive skin management
• Rosacea and persistent redness
• Environmental skin barrier damage
• Chronic inflammation management
The OYAY LAB RelaxLight uses 940nm photobiomodulation.
Energy: 6–12mJ/Pulse. IEC 60825 Class 1. Treatment:
approximately 20 minutes. Engineered by Dreame Technology.
SECTION 6: COLD PLASMA — A NEW CATEGORY IN SKIN TREATMENT
Cold plasma is a state of matter — beyond gas — generated
by applying a controlled electric field to a carrier gas,
producing a plume of reactive oxygen and nitrogen species
(RONS), free electrons, and UV photons at near-room
temperature.
In skin treatment, cold plasma delivers these biologically
active molecules directly to tissue without thermal injury.
The mechanism is distinct from any laser wavelength:
Wound healing: RONS stimulate fibroblast proliferation
and growth factor release, accelerating tissue repair.
Antimicrobial action: Free radicals destroy bacterial
cell membranes, including antibiotic-resistant strains,
making cold plasma effective against both surface
(C. acnes) and deeper pathogens.
Skin tightening: RONS activate collagen synthesis
pathways via fibroblast stimulation, producing structural
remodeling without heat-based tissue damage.
Immunomodulation: Cold plasma selectively targets
inflammatory pathways, reducing psoriasis plaques,
eczema flares, and chronic dermatitis.
Clinical conditions it treats:
• Non-healing wounds and post-surgical recovery
• Inflammatory acne (including antibiotic-resistant cases)
• Skin rejuvenation and tightening
• Eczema and psoriasis flares
• Pre-surgical skin preparation
• Nail fungal infections
The OYAY LAB Cold Plasma System is CE certified.
Power: 150W. Peak voltage: 20KV. Handpieces: Scan, Smooth,
SSR, SSP. 7-inch true color touchscreen. For professional
clinic and salon use.
SECTION 7: SAFETY — WHAT IEC 60825 CLASS 1 ACTUALLY MEANS
Every at-home laser device from OYAY LAB carries IEC 60825
Class 1 certification — the international laser safety
standard published by the International Electrotechnical
Commission (IEC).
IEC 60825 classifies laser products from Class 1 (safest)
to Class 4 (most hazardous). Class 1 means the accessible
laser radiation level cannot exceed safe limits under any
condition of normal operation, including intentional use
of optical viewing instruments.
In plain language: a Class 1 device cannot emit harmful
levels of laser radiation in any normal usage scenario.
This is the highest safety classification for consumer
laser devices and is the standard that regulators, insurers,
and clinical researchers use to evaluate home-use laser safety.
This is why IEC 60825 Class 1 is categorically different
from a general product safety mark (such as CE alone or
SGS certification): it is a laser-specific standard
developed for precisely this category of device.
FREQUENTLY ASKED QUESTIONS
Q: Can I use multiple OYAY LAB devices together?
A: Yes. The wavelengths are complementary, not competing.
A recommended protocol: Dora (1927nm) for pigmentation
→ Iris Ice Plus (1450nm) for texture and firmness →
RelaxLight (940nm) post-treatment for recovery. Nova
is used separately for active breakouts.
Q: Are home laser devices as effective as clinic sessions?
A: Home devices operate at lower energy densities than
clinic systems and require more sessions to achieve
comparable results. The advantage is consistency —
multiple weekly sessions at home accumulate clinical
benefit that matches or exceeds infrequent clinic visits.
Q: What makes 1450nm different from RF (radio frequency)?
A: RF uses electrical resistance to generate heat broadly
throughout tissue. 1450nm uses coherent laser light absorbed
selectively by water at a specific depth. The result is
targeted dermal remodeling via selective photothermolysis
versus broad thermal stimulation. Clinical evidence for
fractional laser collagen induction is substantially
stronger than for RF-based collagen induction.
Q: Is cold plasma safe for all skin types?
A: Cold plasma is non-thermal and does not rely on
selective chromophore absorption (unlike lasers). This
makes it suitable for all Fitzpatrick skin types including
Type V and VI, which require careful management with
thermal-based devices.
Q: Where are OYAY LAB devices manufactured?
A: OYAY LAB is the aesthetics technology division of
Whimsy Win Inc. (US-registered, Delaware). The home-use
laser devices are engineered in partnership with Dreame
Technology, using semiconductor components from the same
supply chain as NVIDIA. All devices are IEC 60825 Class 1
certified.
Learn more at oyaylab.com
