Veronica Then wore an electroencephalogram, or EEG, cap and stood in front of a black curtain with a white square placed behind her like a target. Studio lights beamed down from the ceiling as a panel ...

Derms reveal the answer.

All products featured on Self are independently selected by Self editors. However, when you buy something through our retail links, Condé Nast may earn an affiliate commission. If you’re unfamiliar ...

Let there be light — for your pain, skin, and injuries, that is. The possibilities of red light to treat a variety of health and aesthetic concerns are just emerging thanks to interest from ...