Most Americans get enough zinc through diet and a multivitamin, but research has pointed to several potential upsides to supplements. Unless you’re at risk for a zinc deficiency, you likely haven’t ...

For centuries, colloidal oatmeal has been a salve for itchy, dry, or irritated skin. This natural ingredient is readily found in cosmetic products like moisturizers, shampoos, and shaving creams.

Colloidal silver is a controversial alternative medicine. Advocates claim it may be used to treat a variety of acute and chronic conditions, but there’s no scientific evidence to support these claims.