Developed by the primary inventor of the Sonicare® toothbrush, the Clarisonic Skincare Brush is clincally proven to be more than 2x as effective as cleansing by hand. Gentle enough for use twice daily, it leaves your skin feeling and looking smoother-and prepares the skin for increased product absorption. Ideal for all skin types. In a recent 2-month, home-use test with 110 subjects, after 4 weeks 81% felt the CLARISONIC cleans more effectively and reported healthier looking skin. 94% felt their skin was softer and 70% reported pore size decreased. The outer (stationary) brush and the inner (oscillating) brush work synergistically with your skin to create a deep cleansing zone. The inner brush oscillates back and forth at a sonic frequency of more than 300 movements per second. This zone between the two brushes gently flexes the pores to loosen dirt and oil giving you a clean you can't get with cleansing by hand. Includes: One waterproof, oscillating brush tool (for use at the sink or in the shower), One sleek countertop charger cradle, Two brush heads for normal and sensitive skin, One travel 2oz. CLARISONIC daily cleanser, Easy-to-follow user guide. Each Clarisonic brush head lasts approximately 3-4 months and the 2 ounce cleanser lasts 3-4 months.