Independent, evidence-led reviews. We disclose all commercial relationships — including with brands we may be affiliated with. Read our editorial & disclosure policy →
The light therapy authority

The science of light, decoded for your skin.

Peer-reviewed research, lab-measured irradiance and dermatology-grade guidance — so you can tell the difference between marketing and medicine before you spend £2,000.

Why readers trust us
1,528LED diodes independently counted & verified on tested masks
SGS-testedIrradiance figures cross-checked against accredited lab reports
40+Clinical papers summarised in plain English, with citations
Referenced by peer-reviewed studiesLab-measured irradianceReviewed by qualified practitionersTransparent affiliate disclosure
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Start with the science

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Light Therapy

Red, near-infrared & blue light — wavelengths, irradiance and what actually penetrates skin.

Skin Science

Barrier, collagen, ageing biology — the fundamentals behind every claim.

Skin Concerns

Wrinkles, under-eye laxity, pigmentation, acne — evidence by problem.

Device Reviews

Independent, spec-by-spec comparisons of premium LED masks & tools.

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Most-read this month

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Buyer's Guide · 12 min read

Best LED Face Masks 2026: A Clinical Buyer's Guide

How to judge an LED mask on irradiance, wavelength, coverage and real certification — not marketing. With a fully-referenced comparison table.

Light Therapy

630 vs 660 vs 830 nm: which wavelength does what?

Reviewed against 14 studies · 9 min
Skin Concerns

Under-eye laxity: what the evidence says actually works

Updated Jun 2026 · 8 min
Our difference

Claims are nothing without evidence

Most beauty-device marketing quotes impressive numbers with no source. We do the opposite: every efficacy figure links to a citation, and every irradiance reading is checked against an accredited lab report — by reference number.

01

Cite or cut

If a claim has no published source, it doesn't appear on this site.

02

Lab-measured, not brochure-quoted

Irradiance (mW/cm²) verified against SGS / accredited testing.

03

Conflicts disclosed

Where we're commercially connected to a product, we say so — clearly.

Wavelength penetration depth
Blue 415nm
~0.3mm
Red 630nm
~1–2mm
Red 660nm
~2–3mm
NIR 830nm
~3–5mm

Illustrative depths from peer-reviewed photobiomodulation literature. Full citations on the source page. View references →

Myth vs Fact

Cutting through the marketing

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✕ Myth

"More LEDs always means a better mask."

✓ Fact

Diode count means little without measured irradiance and the right wavelengths reaching skin. A poorly-specced 1,000-LED mask can under-deliver versus a well-engineered one. Here's how to read the specs →

The Briefing

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