A mask brush is a tool used to apply facial masks evenly and smoothly to the skin. It is typically made of synthetic or natural bristles and has a handle for easy grip.

To use a mask brush, follow these steps:

1. Cleanse your face to remove any makeup or impurities.
2. Scoop a small amount of your chosen mask onto the brush.
3. Using the brush, apply the mask evenly to your face, avoiding the eye and lip area.
4. Leave the mask on for the recommended amount of time specified by the product instructions.
5. Rinse your face with water and gently pat dry with a towel.

Some key ingredients to look for in a facial mask are:

-Clay masks, which are great for oily skin and can help to draw out impurities and excess oil.

-Hyaluronic acid, which helps to hydrate and plump the skin. -Vitamin C, which helps to brighten and even out skin tone.

-Glycolic acid, which helps to exfoliate and improve the appearance of fine lines and wrinkles.

It's always recommended to do a patch test before applying any mask, especially if you have sensitive skin.