Other research has shown red light therapy could minimize the appearance of wrinkles, hyperpigmentation, and broken blood vessels—and improve skin hydration and elasticity. Another study found that red and blue light therapy could help mild to moderate acne, with red light minimizing inflammation.

"Red light therapy is like a little boost of healing power for your feet," says Shital Sharma, a New Jersey-based foot and ankle surgical podiatrist. "It helps improve circulation, reduce inflammation,