Tria Hair Removal Laser 4X - 20 J/ cm2 Diode Laser

Tria Hair Removal Laser 4X is a cordless home hair-reduction device built around an 810 nm diode laser. Its current US listing gives the device a regular price of $599.99 and describes a precision treatment format rather than a broad IPL flash window.The Tria 4X product page identifies the model, price, wavelength, energy output, battery duration, and supported skin-tone range.

Laser Output and Coverage

The device uses a single 810 nm wavelength and reaches up to 20 J/cm2. Tria compares that figure with 6.5 J/cm2 for selected Braun Silk i-Expert Pro models and 6 J/cm2 for Philips Lumea 9000 Series devices.The published comparison describes the Tria 4X as a precision diode laser and the Braun products as IPL devices.

One full charge provides around 30 minutes of treatment time. Tria gives half a leg as an example of a larger treatment area, while both underarms and the upper lip are listed as multiple smaller areas that can fit within one charge.The US product listing also describes the device as cordless during treatment.

Skin Range and Use Limits

The current model is described as safe and effective for Fitzpatrick skin tones I to IV. It is not suitable for skin tones V and VI, a restriction that separates the device from some IPL systems with broader published skin-tone compatibility.

Tria states that the 4X is FDA-cleared for permanent hair reduction at home. The company reports up to 75% hair reduction after 2 treatments and up to 100% after 8 treatments, based on its cited clinical assessment. Those figures describe the stated treatment results, not a guarantee for every user.

Position Among Home Lasers

The Tria 4X occupies the premium end of home hair-removal devices at $599.99 as of 09/23/2026. Its distinguishing specification is the 810 nm diode laser, while the cited Braun alternative uses IPL and is listed with a lower 6.5 J/cm2 maximum output.

The tradeoff is coverage. A precision laser window can require more passes across larger areas than a broader IPL window, while the 30-minute battery figure sets a practical limit for each cordless treatment session. The device is therefore better matched to targeted areas than to rapid full-body coverage.

Verdict for Targeted Hair Reduction

Tria Hair Removal Laser 4X is a high-output home diode laser for users whose skin falls within Fitzpatrick I to IV and who want a cordless device with a fixed 810 nm wavelength. Its 20 J/cm2 maximum output and $599.99 price place it above many IPL alternatives, while the narrow treatment format and skin-tone restriction define its limits.