Rachael Link is a registered dietitian and health writer based in San Francisco. She completed her undergraduate degree at the University of Central Missouri and holds a master’s degree from New York ...

All products featured on Glamour are independently selected by Glamour editors. However, when you buy something through our retail links, Condé Nast may earn an affiliate commission. Korean collagen ...

Promises of glowing skin and stronger joints sound great. The science behind collagen supplements is more complicated.

Acne affects millions of Americans every year, sometimes causing stubborn scarring that can be difficult to clear. Certain vitamins, including vitamin A, can help clear acne scars, an expert told Fox ...

I realized my oily skin was causing all sorts of trouble—especially with hyperpigmentation and dark spots. Skipping sunscreen and proper skincare definitely didn’t help. But as I’ve gotten older, I’ve ...

The demand for, and use of, the best hair, skin, and nail vitamins (a.k.a. HSNs) has skyrocketed in recent years, according to a 2023 survey published by the Journal of the American Academy of ...

The skin, our body’s largest organ, is constantly exposed to environmental stressors like pollution, UV rays, and irritants. To maintain its protective barrier, repair damage, and prevent premature ...

That protein powder you’re mixing into your post-workout shake might be doing more than just helping you build muscle. While you’ve been focused on gains at the gym, your fitness supplements could be ...

Medically reviewed by Erika Prouty, PharmD Key Takeaways Vitamin B12 is generally safe, but rare reactions like allergies or ...