LED (light-emitting diode) therapy uses specific wavelengths of visible and near-infrared light to influence cellular activity in the skin. The technology was originally researched by NASA for wound healing and has since become one of the most well-studied non-invasive treatments in dermatology.
Different wavelengths penetrate the skin at different depths. Red light (around 630–660 nm) targets the dermis to support fibroblast activity and collagen synthesis. Near-infrared (around 830 nm) reaches deeper tissue and is associated with reduced inflammation. Blue light (around 415 nm) acts on the surface to influence the bacteria implicated in breakouts.
Peer-reviewed studies have linked consistent LED use to improvements in fine lines, post-inflammatory redness, barrier recovery and overall skin clarity. Results depend on dose, distance and consistency — a few sessions per week over several weeks is typical.
Cleanse, dry the skin, and use the device for the manufacturer’s recommended time — usually 10–20 minutes — before applying serums and moisturisers. LED is non-thermal and suitable for most skin types, including sensitive and post-procedure skin.
LED therapy is considered for early signs of ageing, persistent redness, recovery after in-clinic treatments, and anyone wanting a low-effort routine addition with a strong safety profile. It is not a replacement for prescription treatments where those are clinically indicated.