1. About the productReplacement brush heads are made from a non to porous, super soft filament which is resistant to attracting bacteria. Deep pore Precision to designed to cleanse deep into your pores to remove impurities and reduce oil and blemishes. Ideal for oily skin, large pores or difficult to reach areas of the face, like the crevasses around the nose. Sensitive Precision to designed for effective use on the face, dcolletage and body for sensitive or combination skin types. Radiance: Gently cleanses away dullness to reveal radiant skin, Velvety Plush and Gentle. Deep Pore: Reduce the appearance of pores, Invigorating and Refining.2. Our premium replacement brush heads are manufactured in a facility approved by FDA, with the highest health and safety standard.3. With daily use, the brush leaves skin feeling and looking smoother, and increases topical product absorption for improved cleansing. For best results, replace your brush head every 3 months.4. The brush is safe and gentle for daily use, it is your part of daily facial care regimen. It massages skin and increases circulation, thus improves product absorption and further reduce the appearance of wrinkles and pores.5. Usage For best results, replace your brush head every 3 months. To remove the brush head: 1) Grip the brush head firmly, then push and twist it counter to clockwise. 2) Pull the brush head away from the handle. To attach the brush head: Push down and twist the head clockwise until it snaps into place.Tip: Use the brush head cap to easily remove and attach the brush head with a simple twist.6. Compatibility Compatible with Mia, Mia 2, Mia 3, Aria, Pro and PLUS Cleansing Systems Built with High Quality Standards 100 percent Satisfaction Guaranteed