COMPATIBILITY: The replacement brush head 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. FUNCTION: Designed for ultra-gentle cleansing, keeping skin precise, clean and shiny. The cleaning effect of the skin is 6 times better than the cleaning effect with one hand. PREMIUM MATERIAL: The brush head is made with 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 nose. TIP: We recommend changing the brush head every 3 months for best results. And we recommend this product for all large pore skin. The replacement deep pore cleansing brush head uses a dual-effect gradient bristle design to help rinse and remove pore-clogging oil and debris. MONEY BACK GUARANTEE: 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.