Gray Mineral Balls make water clear, reduce oil secretion, restore balance in oil glands, and rejuvenate your skin. Fits with ionic filter handheld shower head. Red Mineral Balls about 180 g; White Mineral Balls about 60 g; Gray Mineral Balls about 60 g. White Negative Ion Mineral Balls adjust the pH of water, reduce rust buildup, restore smooth skin, and make your hair shiny and smooth. They produce a variety of precious minerals that are easily absorbed by the skin, helping to smooth skin and reduce oil secretion. Bioactive minerals work to help restore balance in the oil glands. Use scenarios - Daily shower routine: helps balance oil glands and improve skin texture while showering. - Hair care: contributes to shinier, smoother hair when used with an ionic handheld shower head. - Water quality improvement: pH adjustment and rust-reduction benefits for better-feeling skin and easier maintenance of the skin and hair.