- Wavelengths
- The Shark CryoGlow (FW312) emits at 415 nm, 630 nm, 830 nm. The The Light Salon Boost Advanced emits at 633 nm, 830 nm. Both cover red and near-infrared, the two ranges with the strongest published evidence for skin.
- LED count
- The Shark CryoGlow (FW312) carries more diodes: 160 against 112. Diode count sets how evenly light reaches the face — a coverage figure, not an efficacy figure.
- Published irradiance
- Only the The Light Salon Boost Advanced publishes an irradiance figure (~30 mW/cm² · ~18 J/cm² per session). The Shark CryoGlow (FW312) does not, so the dose the two masks deliver cannot be compared.
- Regulatory
- The The Light Salon Boost Advanced prints a searchable 510(k) number (K191629); the Shark CryoGlow (FW312) states its clearance without printing one. These devices are FDA cleared, not FDA approved — clearance is a safety and manufacturing signal, not proof of results.
- Session and modes
- The Shark CryoGlow (FW312) runs 8 min per session (3 targeted programmes + under-eye cooling). The The Light Salon Boost Advanced runs 10 min (single programme, 3–5×/week).
- Fit and power
- Shark CryoGlow (FW312): rigid, multi-zone; corded USB-C (cooling needs power). The Light Salon Boost Advanced: flexible silicone; rechargeable battery pack.