Plus, they are a finer consistency and may blend much better and look more natural than cheaper brands. You may always hear the tip that you need to exfoliate, and it's true. But how do you know when it's time to exfoliate? Esthetician to the stars, including Jessica Simpson, Renee Rouleau, says to dip into your office supplies to check your skin. Take a clear piece of tape and affix it to your forehead. Pull it off, and if you can see lots of little white flakes, then that means you need to exfoliate to slough off those tiny flakes. The same goes for the rest of your body - Jennie Garth loves those scrubby bath mitts or gloves paired with a gentle exfoliator for a head-to-toe glow.