What is red light therapy? A dermatologist explains the skin care trend and its benefits.

Red light therapy, also known as LED therapy, is gaining popularity in the skin care world for its potential anti-aging benefits.

Dr. Rachel Nazarian, a board-certified dermatologist in New York. told "CBS Mornings Plus" that LED, or light emitting diodes, create a narrow wavelength that can "penetrate the deepest into the tissue, which is probably why it has all this potential to help skin."

This form of light therapy is popping up on social media, with users demonstrating hand-held devices as well as full facial masks they're incorporating into their self-care routines.