approx. 415 nm
Blue
Clearer-looking skinThe higher-energy end of the visible spectrum, and one of the most researched bands for blemish-prone, congestion-prone complexions. It works at the very surface of the skin.
Light therapy, explained
The science of light
No UV. No mystery. Just specific wavelengths of light, delivered gently at home, and an honest look at what they do for the appearance of your skin.
How light therapy works
Light is older than skincare. Humans have always understood, intuitively, that it does something to us: it warms, it lifts, it shifts something inside. What's new is our ability to isolate specific wavelengths and deliver them gently, without the UV that makes sunlight risky.
LED light therapy, sometimes called photobiomodulation, rests on a simple idea: skin cells respond to light at certain wavelengths. Delivered at the right intensity, research has explored how skin may respond in ways consistent with a more radiant, refreshed appearance. Many devices pair the light with gentle warmth and low-level microcurrent, so the ritual feels genuinely restorative rather than clinical.
The one word that matters most is consistency. A single session is relaxing; a daily ritual over several weeks is what the research into the modality keeps pointing back to.
The wavelengths
Not all light does the same thing. Each band of the spectrum interacts with skin differently, which is why multi-wavelength devices layer them.
630 & 660 nm
Red
Radiant, even toneThe most extensively studied wavelength in cosmetic light therapy, explored for its association with a rested, healthy-looking glow. It's the light most people picture when they think "LED".
approx. 830 nm
Near-infrared
Whole-face sessionsJust beyond what the eye can see, but skin absorbs it. Because it reaches more deeply than visible light, it's a common inclusion in full-face masks for an even, whole-surface session.
approx. 605 nm
Amber
Calm, soothed lookSitting between red and yellow, amber is associated in the literature with a calm, soothed appearance, a gentle complement to the more energetic red and blue, especially for skin that looks reactive or flushed.
We'll be straight with you
LED light therapy, red and near-infrared in particular, is one of the better-studied areas of cosmetic light science. A few honest things worth knowing before you start:
- At-home is gentler than the clinic. Built for daily use at lower intensities, more patience, not more effort.
- Weeks, not days. Most research protocols run four to twelve weeks. One or two sessions won't tell you much.
- Individual results vary. Skin is complex, tone, starting condition, lifestyle and consistency all play a part.
- A complement, not a cure. Light works best alongside SPF, hydration and good sleep, never a standalone fix.
Consistent with published research into LED light therapy. Individual results vary.
Who should take care
Light therapy has a strong safety profile for most people, but a few situations are worth a pause and a chat with a healthcare professional first.
Pregnancy
There isn't enough research on light therapy during pregnancy to confidently recommend it. If you're pregnant or trying to conceive, please speak with your doctor first.
Light-sensitising medication
Some medications, certain antibiotics, retinoids and acne treatments, can make skin more sensitive to light. If you're on prescription medication, check whether light therapy suits you.
Pigmentation & deeper tones
If you have melasma, are prone to hyperpigmentation, or have a deeper complexion, introduce any device gradually: patch-test, start with the lowest setting and shortest session, and watch how your skin responds over a week.
Eye comfort
Always close your eyes during a session and never point the device toward open eyes. If your device comes with protective eyewear, wear it.
This page is general information only and isn't a substitute for medical advice. If you have any concerns about whether light therapy is right for you, please speak with your doctor or a qualified dermatologist.
Make light a ritual
Five quiet minutes a day. Find the device that fits your routine.