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The Science

The light,
explained.

Four clinically studied wavelengths. 488 high output LEDs. Six treatment modes. Published irradiance at every setting. Everything you need to know about how Sonna works, and why it works differently.

488
High output LEDs
4
Wavelengths
6
Treatment modes
10
Minute ritual
Chapter one

Four wavelengths.
Four distinct jobs.

Each wavelength reaches a different depth of the skin and triggers a different cellular response. Sonna uses all four, individually and in combination, across six treatment modes.

660
nm
Red light

Collagen & tone

Penetrates the dermis, the layer of skin where collagen and elastin are produced. Stimulates fibroblast activity, the cells responsible for building the structural proteins that keep skin firm.

The wavelength most associated with visible anti ageing results in peer reviewed clinical literature.

850
nm
Near infrared

Firmness & repair

Reaches deeper than red light, into the subcutaneous layer. Supports tissue repair and regeneration at a cellular level, and enhances the results of the other wavelengths when layered.

Pairs with red light in anti ageing and repair modes.

415
nm
Blue light

Clarity

Targets the surface and upper layers of the skin. Works to manage the bacteria associated with breakouts and supports oil balance without stripping or drying.

Used in the anti acne mode and the evening mode.

590
nm
Yellow light

Radiance & calm

Most LED masks use three wavelengths. Sonna uses four. Yellow adds the calming, radiance building layer most devices leave out. Soothes redness, supports an even skin tone, and brings visible luminosity.

Works across rejuvenation, morning and evening modes.

Chapter two

Six modes.
Measured irradiance.

Irradiance is the measure of light energy delivered to the skin per square centimetre. It determines whether the light is strong enough to reach the cells and trigger a response. Most LED mask brands don't publish these numbers. We do.

Mode
Name
Wavelengths
Irradiance
01
Repair
Red 660nm
25.8 mW/cm²
02
Rejuvenate
Yellow 590nm + Red 660nm
30.7 mW/cm²
03
Anti ageing
Red 660nm + NIR 850nm
48.9 mW/cm²
04
Morning
Yellow + Red + NIR
48.3 mW/cm²
05
Anti acne
Blue 415nm
19.0 mW/cm²
06
Evening
Yellow + Red + NIR + Blue
56.8 mW/cm²

Irradiance measured at device surface. Sessions of ten minutes recommended daily.

Chapter three

How it works.
At a cellular level.

Step one

Light reaches the cell.

Each wavelength penetrates skin to a specific depth. Red reaches the dermis. Near infrared reaches the subcutaneous layer. Blue stays at the surface. Yellow works across the upper layers.

Step two

Cells absorb and respond.

Light energy is absorbed by photoreceptors in skin cells. This activates cellular processes including collagen production, circulation, and repair. The process is called photobiomodulation.

Step three

Results build over time.

Visible changes in radiance and tone typically appear within a few weeks. Changes in firmness and texture build over eight to twelve weeks as collagen response is supported. Consistency is the single most important factor.

Chapter four

Cleared.
Listed. Tested.

United States

FDA 510(k) cleared

Meets safety and performance standards for at home LED therapy in the US market.

Australia

TGA listed

Listed with the Therapeutic Goods Administration. Meets the standards required for wellness devices in the Australian market.

Build quality

Built to last

Soft touch silicone. 488 LEDs across 122 bulbs. Lightweight, flexible and designed for daily use over thousands of sessions.

For questions about safety, contraindications, or usage with specific skin conditions, contact us or consult your dermatologist. Sonna is not a substitute for medical treatment.

Chapter five

What to expect.
And when.

1–2
Weeks

First shift.

Skin looks calmer. Tone more even. Most people notice a subtle shift in radiance before anything else.

4–6
Weeks

Visible change.

Texture refines. Breakouts reduce. Fine lines begin to soften. Skin feels more resilient under makeup and actives.

8–12
Weeks

The difference.

Collagen response is most visible here. Firmness, tone, and clarity compound. This is the version most people book facials to find.

Results are cumulative and depend on consistent daily use. Individual response varies with skin type, age, and routine. The single best predictor of results is consistency.

Start the ritual

The science is only useful if you use it.

Ten minutes a day. Consistently.

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