Best-selling and totally rust free, the “metal” looking part is actually a sturdy acrylic material that will never RUST! Stunning “spa blue” handle mask brush is used for precise and even application of any type of mask. f Lightweight yet durable. All natural and vegan bristles are made of a botanic grass material, that is soft yet sturdy that holds product well. Brush can be used on all types of masks such as creamy, clay, etc. Fan shape. Length is 7.5 inches.