Aeterna™ Red Light Therapy Cap
Powered by clinically studied red light wavelengths, the AETERNA Red Light Cap helps support natural hair growth, improved scalp health, and thicker, fuller-looking hair.
A lightweight, wearable design makes treatments seamless, discreet, and easy to incorporate into your everyday routine.
Free worldwide shipping · Ships in 1–2 business days · 30-day skin ritual guarantee
Dual-wavelength light for the scalp. 660 nm red light is absorbed at the follicle, where it supports cellular energy and local circulation; 850 nm near-infrared reaches deeper into the surrounding tissue. Together they support the growth phase of the hair cycle for thicker, fuller-looking hair. 360-degree LED placement covers the whole scalp in one ten-minute, auto-timed session.
On a clean, dry scalp, three to five times a week, ten minutes at a time. Put the cap on, press start, and carry on with your evening. The session ends on its own. Photograph your part and crown before you begin and every four weeks after; hair changes slowly, and the camera is a fairer judge than memory.
Free worldwide shipping. Orders ship within 1–2 business days and typically arrive in 5–10. You have a 30-day skin ritual guarantee from the day it arrives. If it isn’t part of your routine by then, send it back.
Wipe the LED surface with a soft, dry cloth after use. Do not wash the cap or submerge it. Store away from direct sunlight with the cable coiled loosely.
Product images may show branding for presentation purposes. Some units may not display external logos. This does not affect quality, performance, or authenticity.
Our devices are designed with a clean, professional aesthetic inspired by clinical-grade equipment.
Designed in Canada
FDA · CE · FCC · RoHS
30-day skin ritual guarantee
Free worldwide shipping
Two clinically studied wavelengths, 360-degree scalp coverage and a design that looks like the cap you already own, so the light that used to need a clinic appointment now fits between dinner and the dishes.
Read the scienceEach wavelength reaches a different depth of the scalp. Scroll to see what each one is for.
Red light is absorbed by the mitochondria of scalp and follicle cells, raising their energy output and releasing nitric oxide to widen local blood vessels, bringing more oxygen and nutrients at the base of every growing hair.
Near-infrared is absorbed less readily by skin and water, so a useful portion travels further into the scalp tissue around the follicles, supporting the same circulation and cellular activity a little deeper down.
A clinic laser-hair session is a lovely hour, but it’s also an appointment, a commute and a bill every time. Aeterna is the same category of light, paid for once, worn at home.
It pays for itself after 4 clinic visits.
Clinic pricing is a typical range for in-office low-level light sessions and varies by city and provider. The Aeterna figure assumes the sessions and horizon shown; the cap keeps working long after.
Here is how Aeterna sits next to a typical light helmet and an in-clinic session.
| Aeterna™Red light therapy cap | Typical light helmet | In-clinic session | |
|---|---|---|---|
| Wavelengths | 660 nm red + 850 nm near-infrared | Red only | Red laser |
| Coverage | 360°, full scalp | Crown-focused | Full scalp |
| Looks like | The cap you already own | A helmet | A clinic chair |
| Session | 10 minutes, auto-timed, hands-free | 20–30 minutes | 20–30 minutes plus travel |
| Where | Anywhere in the house | Beside a wall outlet | By appointment |
| Cost | Once | Once | Every visit |
| Guarantee | 30-day skin ritual guarantee | Varies |
Helmet and clinic columns describe common products and services, not any specific brand.
Three simple steps, three to five times a week.
Start with a clean, dry scalp so nothing sits between the light and the follicle.
Put the cap on and press start. Read, cook or answer email. The session ends on its own.
Follicles respond to a routine, not a course. Photograph your part every four weeks and keep the habit.
First signs at eight to sixteen weeks. The changes you’re hoping for at four to six months.
Wipe the LED surface with a dry cloth after use. Not for use with photosensitising medication or an active scalp condition; see the FAQ.
Everything we’re asked most about the cap, answered plainly.
Three to five times a week, ten minutes at a time, on a clean, dry scalp. Consistency over months matters more than any single session.
Hair works on a slow clock. Most people see the first signs (fine new hairs along the part or hairline) at eight to sixteen weeks, with the changes they were hoping for at four to six months of consistent use. Take a photo before you start and every four weeks after.
Early and moderate thinning, post-partum or stress-related shedding once the cause has passed, and anyone who wants to look after the hair they have. It is less useful where follicles have been replaced by scar tissue, and it does not address medical causes of hair loss.
Red and near-infrared LED light contains no UV and does not heat the scalp. If you have a scalp condition, take medication that increases light sensitivity, or your hair loss is sudden or patchy, see a doctor or dermatologist first.
Light has to reach the scalp, so use the cap on clean hair before styling products, oils or dry shampoo.
The light is absorbed at the scalp rather than by the hair itself, so hair colour and texture do not stop it working. Very dense hair benefits from parting it in a few places before a session.
Free worldwide shipping, dispatched within 1–2 business days. You have a 30-day skin ritual guarantee from the day it arrives. If it isn’t part of your routine by then, send it back.
Thirty days to make it part of your evenings. If it isn’t, send it back.
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