10/25/2025
Icing the Skin increases NIR light pe*******on by 25%!
Cooling the skin causes vasoconstriction and reduces superficial blood. You may even notice when your skin is cold there is more transparency and you can see your veins more clearly.
Well, that is true for Red and NIR light too, and studies have been able to confirm it.
A 2017 study also measured the pe*******on through the Achilles tendon of living humans. They iced the skin for 20 minutes prior to measuring the pe*******on with 810nm and 904nm lasers.
They found an increase in transmittance of over 26% for 904nm and about 25% for 810nm. An increase of pe*******on of 25% is quite substantial, especially for a technique so simple as icing the skin.
PMID: 28677985.
Another study used a clear cold gel pack to keep the skin cool during Near-Infrared treatment to enhance pe*******on. They claimed that as the gel warmed over the duration of the treatment, the light absorption became more superficial.
PMID: 23837000
So, do we need to ice the skin for deeper pe*******on Red/NIR Light Therapy?
Not really, most studies do well without any pre-conditioning with ice. Especially since true Photobiomodulation is non-thermal by nature of using low intensities, low doses, and non-thermal wavelengths.
But if we want to enhance pe*******on a bit more, it would be worth experimenting with some cooling or icing techniques.