These light-emitting devices are all over the internet. We asked experts if they can reduce wrinkles, clear acne and more.
You’ve probably noticed this scene on social media: People (usually women) lounging on couches or in beds while wearing serial-killer-style face masks with colorful lights emanating from beneath them.
Typically referred to as light therapy or LED face masks, these contraptions use light-emitting diodes to shine light at specific wavelengths onto the skin for various purposes like reducing wrinkles, firming the skin and controlling acne.
The devices, which are also available in wand form, are popular. They can also be pricey, with some costing several thousand dollars.
Do they work? We asked two dermatologists and two facial plastic surgeons for their takes.
What is light therapy supposed to do?
LED masks feature eye and mouth holes and are typically held in place with straps. Hand-held wands are lightly pressed against the skin and slowly moved around. Both bathe the skin in various wavelengths of light, depending on what they’re trying to accomplish.
Many devices emit red light with wavelengths between 630 and 700 nanometers. Red light can penetrate deeply into the skin to boost the production of collagen and elastin, proteins that help to maintain skin’s strength and elasticity, said Dr. Akshay Sanan, a facial plastic surgeon in Boston. By boosting those proteins, red light may minimize wrinkles and help skin appear younger. It can also “reduce inflammation and accelerate healing,” Dr. Sanan said.
Other devices emit near-infrared light, around 700 or more nanometers, which can promote wound healing and reduce chronic inflammation, Dr. Sanan said.