It often feels as though your skin-care routine’s primary goals are strictly aesthetic—to banish breakouts, smooth wrinkles, reduce discoloration, et cetera. But while these are certainly welcome ...

The skin barrier is the outermost layer of the skin. Skin consists of three layers: the epidermis, the dermis, and the hypodermis, per Cleveland Clinic. The epidermis is the top layer of skin, and the ...