Multi-purpose: suitable for hand showers with ion filters.Built-in anti-limestone shower head with 3 types.Each color has three sizes that you can customize to your liking. White Stone: Mineral balls with negative ions, can increase pH (alkalinity), release negative ions, adjust water pH to slightly alkaline, reduce rust and restore smoother skin, make your hair shiny and smooth. Gray Stone: Energy balls turn water molecules into small molecules.A variety of valuable minerals are easily absorbed by the skin.Helps relieve fatigue, promote metabolism Red Stone: Infrared mineral balls, can remove bacteria, residual chlorine from tap water and heavy metals, and also have an antioxidant function. Healthy and soothing: made of high-quality Maifan stone.Provides stronger adsorption and penetration than the original ore and is a kind of sterile, non-toxic and environmentally friendly water filter.