The Science of Light
The Science
Light Therapy
How light became part of the evening.
LED light therapy started where most skincare technology starts: in professional settings, on equipment the size of a wardrobe, booked by appointment. What changed was not the idea but the hardware. Diodes became small, efficient and cool enough to sit against skin, and a treatment that once meant a clinic became something you could do on the sofa in the ten minutes before bed.
The principle is simple enough to state plainly. Different colours of light carry different amounts of energy, and that energy behaves differently when it meets skin — some of it stopping at the surface, some of it reaching further in. A device that offers more than one colour is offering more than one depth. That is the whole reason LUMÈRE runs four modes rather than one.
What matters at home is not intensity but consistency. A clinic session is powerful and occasional; an evening ritual is gentle and repeated. LUMÈRE is built for the second kind — soft silicone that contours to the face rather than hovering above it, cordless in use, and short enough that ten minutes never becomes a decision.
Depth
One you see. One you don't.
Colour is not decoration on a light device — it decides how far the light travels once it meets skin. Three of the four you can see. The fourth runs underneath all of them.
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Blue
Stays nearest the surface.
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Yellow
Travels a little further in.
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Red
Further again — down to the layer where collagen and elastin sit.
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Near-infrared
Reaches deepest of the four, and is the one you can't see at all.
Four Modes
One device, four depths.
Each mode pairs a visible colour with near-infrared. The colour changes where the light lands; the near-infrared runs underneath all four.
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Red
Collagen support · firmness and fine lines
Warm, visible red light, blended with near-infrared. The longest visible wavelength on the device, and the one the collagen conversation is about — firmness, elasticity, and the fine lines that come with losing them.
660nm + 850nm near-infrared
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Blue
Clarifying · balances oil production
The shortest, coolest light in the set — it stays closest to the surface, which is exactly where it's meant to work.
450nm + 850nm near-infrared
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Yellow
Circulation · soothes the skin
Soft amber-yellow, sitting between blue and red on the spectrum. The gentlest of the four, and the one to reach for on a sensitive evening.
590nm + 850nm near-infrared
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Purple
The complete pass · deep recovery
Every diode at once — red, blue, amber and near-infrared together. The violet cast is the three visible colours overlapping, not a fifth light.
450nm + 590nm + 660nm + 850nm near-infrared
Collagen
Why collagen is the whole conversation.
Underneath the surface you can see, skin is held up by a scaffold. Collagen is the protein that gives that scaffold its structure and firmness; elastin runs alongside it and provides the spring — the reason young skin creases when you smile and then flattens out again the moment you stop.
From your mid-twenties, the cells that build collagen — fibroblasts — start producing a little less of it each year. Sun exposure, broken sleep, smoking and stress all speed that up. As the scaffold thins, two things happen at once: skin loses some of its volume and bounce, and the creases made by everyday expression stop bouncing back. A line that used to appear only when you smiled gradually becomes a line that's there when you don't. That is what people mean by fine lines and wrinkles — not damage exactly, but a slow change in the structure holding everything up.
This is where light comes into it. Fibroblasts don't sit on the surface — they live down in the dermis, below the layer you can reach with a cream. Red light is the longest visible wavelength on the device and travels furthest of the three you can see; near-infrared, which you can't see at all, goes further still. Between them they're the part of the spectrum that reaches the depth where the scaffold is actually built. That is the entire premise of red light for firmness and fine lines, and it's why red is the mode most evening routines are built around.
It's worth being straight about the shape of it: this is cumulative, not an event. Collagen is built slowly and it is maintained slowly. Ten minutes most evenings will always do more than an hour once a fortnight — which is the reason we spent longer on the fit of this device than on anything else. A mask you actually keep wearing is the only kind that matters.
The Device
Why fit matters more than power.
The most common reason a light mask stops working is that it stops being worn. Rigid shells hover off the face, leaving gaps at the cheekbones and jaw where the light never properly lands. They press at the bridge of the nose. They need a cable, which means a chair, which means the ritual has a location — and rituals with locations get skipped.
LUMÈRE is built from skin-soft flexible silicone that follows the contours of the face instead of bridging them, with adjustable head and chin straps that hold it settled without pressure points. The Face + Neck version carries the same construction in one continuous piece, down through the jaw and the full neck — the area most devices in this category simply leave out.
It is cordless in use and charges over USB-C, so ten minutes can happen while you make tea, read, or lie down. That is not a convenience feature. It is the difference between a device you use most evenings and a device in a drawer.
Light Questions
The science, in plain words.
What is near-infrared light?
Light just beyond the red end of the visible spectrum — real light, simply outside the range the human eye can register. It runs in all four LUMÈRE modes, which is why the device feels gently warm even on the coolest setting.
Why does the device have four colours instead of one?
Because different colours of light behave differently when they meet skin. Blue is the shortest and stays nearest the surface; red is the longest visible colour on the device; yellow sits between them; and near-infrared runs underneath all of them. Purple is all four firing together.
Why is red the mode everyone talks about?
Because it's the one aimed at collagen. Red is the longest visible wavelength on the device, so it travels furthest of the three colours you can see — down toward the layer where the cells that build collagen and elastin actually live. Firmness and fine lines are structural, and the structure sits deeper than a cream can reach.
Which mode should I use?
Red is the everyday setting and the one most people build their evening around. Blue is the clarifying mode. Yellow is the gentlest, and a good choice on a sensitive evening. Purple runs all four at once for a complete pass. You can change your mind nightly — there's nothing to set up.
Does it feel warm?
Gently. Most people describe it as a soft, pleasant warmth — closer to late evening sun than to heat. That sensation is largely the near-infrared, which you feel rather than see.
Can I use it with my skincare routine?
Yes — use it on clean, dry skin, before serums and moisturiser, so nothing sits between your skin and the light. Apply the rest of your routine afterwards as usual.
How often should I use it?
Make it a regular part of your evening, most days of the week. With light, consistency matters far more than any single session.
Do I need to wear the eye protectors?
Yes. Two are supplied in the box. Use them every session and keep your eyes closed underneath — it's the one part of the routine we'd ask you not to skip.
Is there anyone who shouldn't use it?
If you're pregnant, taking photosensitising medication, or managing a skin condition, talk to your doctor before adding any light device to your routine. LUMÈRE is a cosmetic device and is not a substitute for medical treatment.
Zero-Risk Ritual
60 days of light, on us.
Make LUMÈRE part of your evenings for two full months. If it doesn't earn its place on your nightstand, send it back for a full refund — no forms, no friction.
- 60-day money-back guarantee
- 12-month replacement guarantee
FDA Cleared