Definitely an essential part of my skincare. A rice toner and niacinamide is TOP TEIR combo for that glass skin. This was the only thing that got rid of annoying forehead bumps. I must say this may not be for everyone at first. If you have sensitive, combination, or even normal skin, apply it once or twice a week just to get your skin used it. Then, you can use it twice a day. If your skin barrier is damaged, I don’t recommend using it until your skin barrier is healed.