How does laser hair removal work?
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Laser Targets Hair
The laser beam targets the melanin (pigment) in your hair.
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Energy Converts To Heat
The laser’s light energy converts to heat, which travels down the hair into the hair follicle.
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Follicle Disabled
This heat disables the follicle, causing the hair to fall out.
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Process Becomes Permanent
With continued treatments, the follicle stops producing new hair, giving you permanent hair removal.
Permanent hair reduction* with the Tria 4X.
The Tria 4X uses non-ablative diode laser technology—the same trusted by top clinics worldwide. Unlike IPL (intense pulsed light), it delivers targeted energy deep into the follicle to permanently* disable hair growth, meaning it can deliver up to 233% more hair removal power.*** Developed by the minds behind the professional Lightsheer™ (the pinnacle of in-clinic laser hair removal for its time), the Tria 4X brings clinical-grade results to your home.
More Power = More hair removed.
When it comes to laser hair removal, power matters. One study showed that increasing a diode laser by just 2 J/cm² led to significantly better results:
- A diode laser at 12 J/cm² reduced hair by 50%.
- At 14 J/cm², the results increased to 65.6%.
- Tria 4X is 20 J/cm² with users experiencing up to 100% hair reduction.**
To achieve optimal results, we recommend building up to the highest power settings with your Tria 4X.
More power = stronger laser = better results.
Our lowest power = their highest power.
The closest to in-clinic technology available for home use, our device runs at up to 20 J/cm2. The highest power that is safe for at-home use.
Compared to other at-home devices, Tria 4X is up to 233% more powerful than leading IPL devices.***
Precision 'hair targeting' wavelength at 810nm.
Different wavelengths of light and laser penetrate the skin at varying depths, each with unique effects. In the case of hair removal, clinical lasers and the Tria 4X use an 810nm wavelength:
Here’s why 810nm is the sweet spot:
- It’s highly absorbed by melanin.
- It minimises absorption by other molecules in the skin, which minimises discomfort and risk.
- It’s the wavelength of choice in many top clinical laser systems.
That’s why we built the Tria 4X with 810nm wavelength technology—for results that are both powerful and precise.
IPL reduces, laser removes.
A 10 J/cm² diode laser has been clinically proven to be more effective than IPL for long-term hair removal. Here’s why:
- Laser devices use a single, focused wavelength—targeting hair precisely.
- IPL emits a broad spectrum of light, much of which is blocked or wasted.
- Less targeted = less efficient.
- Their highest setting = our lowest.
Lasers = permanent*, IPL = temporary.
*Permanent results are defined as ‘a permanent reduction in hair regrowth’. i.e. a long-term stable reduction in hair counts following a full course of laser treatments.
**Based on user self assessment scores during independent clinical trial of 21 participants.
***Based on maximum output specifications outlined in each device’s User Manual. Tria 4X at 20 J/cm2, Braun Silk i-Expert Pro 5 and Pro 7 at 6.5 J/cm2 and Philips Lumea 9000 Series at 6 J/cm2.