✔️ Ease of use: This is a product you’ll be using at home on your own, so Dr. Engelman recommends considering ease of use and ease of instructions when looking for an at-home red light therapy device. “Since at-home RLT isn’t always as strong as in-office treatments, it’s important to look for a device that can be easily used multiple times a week for maintenance and preventative benefits,” she advises. Butler agrees and emphasizes the comfort of the tool as well: “You want to choose a device that you can sit with and relax while the lights work.”
✔️ Wavelength: To avoid skin sensitivity or damage, take note of the wavelength of light, Dr. Engelman suggests. “I recommend devices that can provide a wavelength between 600 and 900 nanometers,” she adds.
✔️ Device type and shape: Since many of these devices come in mask form, we recommend trying these on both for skin sensitivity and to make sure they are comfortable to wear. If they aren’t, opt for a handheld wand-like device instead.
✔️ Color(s) of light: Dr. Lal recommends using a pure red light device, especially for skin of color. “Blue light can lead to hyperpigmentation, so I would avoid combo masks if you have darker skin.”
✔️ Power Density: For skin issues, aim for a device with a power density between 20 and 200 mW/cm². “Power density means how much light is emitted per unit area,” Beauty Lab Director Sabina Wizemann says.
