Replacement Brush Head Sensitive Compatible With Clarisonic Mia 1 2 3. The Package Contains 4 New Designed Sensitive Brush Heads. Description: 1. Our Deep Pore Brush Heads Are Well Suited For Oily Or Large Pore Skin. 2. They Have Been Tested To Minimize Issues With Locking Spinning Vibration And Durability Tested. 3. We Recommend Replacing All Brush Heads Every 3 Months For Optimal Use. 4. Compatibility: Fits All Device Models: Compatible Fit With The Following Clarisonic Facial Brushes: Smart Profile Mia 1 Mia 2 Mia 3 (Aria) Plus Pro Alpha Fit And Radiance. 5. These Brush Heads Are Aftermarket Products. We Make No Claims That These Are Genuine Clarisonic Parts.