Histolab has formulated a variety of facial toners that accompany our four main Science Collections: Acnex Science, Age Science, Aqua Science, and White Science. Apply a light layer of the selected toner to your skin following your cleanser when performing a skin care routine to remove any remaining residue of soap, dirt, oil, or sweat for example. Provide a boost of hydration to the skin, and target the skin concern of your choosing.