Skin Type and Condition: Aging Skin / Sensitive Skin / Combination Skin ● High-density tornado mist for intensive hydration ● Stretch straight that delivers moisture effectively and promotes lifting ● Warm straight that gently warms the skin ● Science's unique ultrafine bubbles ● One-year warranty ★ Anyone can easily install it if they can remove the head and hose. ★ It can be installed almost as is if it has a 1/2 screw size, such as TOTO and INAX. I only used it once for testing, so it's almost new and unused. Please refrain from purchasing if you are concerned.