From the 1980s on, reverse osmosis (RO) has been an important advancement in water purification for homes. With their amazing ability to remove up to 99.9% of pollutants from drinking water, RO systems are now a necessary component of many modern households. RO systems are widely available in homes worldwide today due to the numerous companies actively involved in their manufacturing.

Oil on human skin is not a strange concept. Instead, it is an indication that such skin is healthy. The skin has pores. Each of these pores has a sebaceous gland right under it, which produces sebum. As a natural oil, sebum performs two major roles—maintaining the skin’s protective barrier and keeping it hydrated. But things can get overwhelming for the sebaceous glands. When this happens, they become overactive, thereby secreting sebum in excess. Excess sebum ultimately causes oily skin.