Best for spec transparency

The Light Salon Boost Advanced review

The transparency benchmark: a verifiable FDA number and a published dose, from a respected UK LED-facial clinic.

The Light Salon Boost is our transparency benchmark. Where most brands hide their numbers, it publishes a verifiable FDA clearance and an actual per-session dose — exactly the disclosure the category needs more of.

#At a glance

Wavelengths
633 nm red + 830 nm near-infrared
LEDs
112 LEDs (56 × 633 nm + 56 × 830 nm)
Session
10 minutes, 3–5×/week
Coverage
Full face — flexible silicone
Design
Flexible silicone
Power
Rechargeable battery pack
Certification
FDA 510(k) K191629 — a publicly verifiable clearance number — plus CE marking and eye-safety testing.
Irradiance / dose
Manufacturer publishes a dose: ~18 J/cm² per session at ~30 mW/cm² — unusually transparent.
Price (approx, Jul 2026)
£395 · ≈€450–470 — some stockists price bundles higher
European availability
Excellent in the UK (thelight-salon.com, Liberty, Cult Beauty); thinner in continental EU.

Uses the two best-evidenced wavelengths and, rarely for a consumer brand, publishes its per-session dose and a verifiable FDA clearance number.

#Strengths and trade-offs

Strengths

  • Publishes a verifiable FDA 510(k) number and a per-session dose
  • Genuine LED-facial clinic heritage
  • Comfortable flexible design; eye-safety tested

Trade-offs

  • Red + near-infrared only (no blue)
  • Premium price; fewer LEDs than some rivals
  • Distribution strongest in the UK

#Transparency done right

Two things set the Boost apart. First, a publicly checkable FDA 510(k) clearance number (K191629) — you can look it up, rather than take “FDA cleared” on trust. Second, it states a per-session dose of roughly 18 J/cm² at about 30 mW/cm², which almost no consumer brand discloses. As our dose guide explains, that number is the one that actually predicts results.

It comes from a respected London LED-facial clinic, uses the well-evidenced 633 nm and 830 nm wavelengths in a comfortable flexible design, and has been tested to eye-safety standards.

#The trade-offs

It is red and near-infrared only, so there is no blue light for acne. It is a premium price for 112 LEDs, and distribution is strongest in the UK — continental-EU buyers may find it harder to source than CurrentBody or Shark.

#How we scored it

Clinical evidence8.4
Wavelengths & dose9.0
Certification integrity9.2
Coverage, fit & comfort8.8
Safety design9.0
Value & ownership8.0
These are our editorial scores against a fixed rubric — an assessment of published specs, certification and the evidence behind each device’s wavelengths, not our own lab measurements.

Frequently asked questions

How can I verify the FDA clearance?

Search the FDA 510(k) database for the number K191629. Being able to check a clearance — rather than trust a marketing line — is exactly why we rate the Boost highly on transparency.

What dose does it deliver?

The brand publishes roughly 18 J/cm² per session at about 30 mW/cm², which sits comfortably in the evidence-supported range for red/near-infrared light.

References

  1. The Light Salon Boost — FAQ & specifications opens in new tab
  2. FDA 510(k) K191629 record opens in new tab