Compatibility: Replacement brush head is compatible with all Clari-sonic facial cleansing brush systems such as Mia, Mia 2, Mia 3 (Aria), Pro, Plus, Smart Profile, Alpha Fit, Plus, Sonic Radiance Premium Material: The brush head is made from all-natural ingredients to minimize any negative effects or possible damage to the skin. Ideal for cleaning traces of skin, large pores or hard-to-reach areas of the face, such as around the noseFunction: Designed for ultra-gentle cleansing, keeps skin precise, clean and shiny. Skin cleansing effect is 6 times higher than single hand cleansing effectTips: We recommend using the brush head every 3 months for best results. And we recommend this product for all large pores. Replacement deep pore brush head uses a dual action graduated bristle design to remove pore-clogging oil and dirt High quality product It is not made or sold by Clari-sonic, but it has the same performance as the original. If you are not completely satisfied, you can request a replacement or a refund.