Long underwear — a.k.a. long johns, thermals, base layers, or whatever else you want to call the cozy, body-hugging tops and bottoms worn beneath looser clothes in cold weather — is my ...

A perfect layer, meanwhile, can keep you warm, dry, and happy all day long. After copious testing, our team of testers has assembled a list of favorite men’s base layers for every winter ...

Subscribe today. Modern base layers have come a long way from the waffle-knit long johns that were wetted out by lunchtime after a few freeze-thaw cycles. From natural temperature-regulating ...

Here's a rough guide to what those terms mean. Stratum corneum: The outer layer of dead skin The stratum corneum contains dead skin cells that have been shed from the epidermis. Using facial ...