Clean skin is a must! Nion Beauty Opus Express & 2Go uses silicone with Tourmaline and silver which makes their products non-toxic, extremely durable, soft, and antibacterial. Because they are so durable you won't ever need replacement heads; their products can last approximately 10 years. The S-ion technology purifies the skin and boosts blood circulation which gives you a glow. Most cleansing devices use friction which can be harmful whereas Nion Beauty uses a Kinetic Skin Cleansing system. This system uses vibrations to loosen the dirt without stripping away naturally occurring oils. It felt so good on my skin; it was light and gentle, like a mini tingling massage.