Is This How Miranda Kerr Avoids Cellulite?

"I do not recommend dry brushing, as it is too abrasive on the skin," said the expert. "The technique will result in dry, irritated skin for most people—especially if performed prior to a shower."

However, if you are going to try the celeb craze, here's what you need to know.

Don't shred the skin: "Using a dry, stiff brush to exfoliate can lead to tiny cuts in the skin, which can allow in bacteria and lead to skin infections," said Dr. Piliang. "For exfoliation, I recommend chemical exfoliators, [which] are ingredients such as alpha hydroxyl acids (AHA), lactic acid and salicylic acid. Many of these have the added benefit of moisturizing the skin. They work by gently dissolving the dead cells."