Do you use a rotating facial brush? While they have their place, and their fans, there are some things you should know. Most rotating facial cleansing brushes are essentially exfoliating tools. The bristles physically brush away dry skin cells (exfoliation),

According to Merriam-Webster, bioavailability is the degree and rate at which a substance is absorbed into a living system or is made available at the site of physiological activity. What does that have to do with the price of tea