Korean Toners

So, what is toner? Toner looks like water and acts like water. It's packed with so much more than hydrogen and oxygen. Depending on the toner, it also can contain acids, glycerin, antioxidants, and anti-inflammatories. A toner is a fast-penetrating liquid that delivers skin a quick hit of hydration and helps remove some dead cells off the surface of the skin. The result: plump, glowing skin. On a makeup-related note, toner is like a primer for the rest of your skin-care routine like Treatment Products and Moisturizers.
When should I use it? You should use a toner no later than a minute after cleansing. Applying active ingredients immediately after cleansing delivers better results. After applying toner, you can proceed with applying your treatment-focused products.
How should I apply it? As for the actual application method, some like to sprinkle toner into their hands and tap it directly onto their skin. However, others prefer to dispense toner onto a cotton pad and gently wipe it around their faces, working outwards.