Describe Shelf life:3 years 1. High-efficiency rechargeable design, easy to achieve automatic cleaning of makeup brushes, freeing your hands, tailor-made for lazy people. 2. Powerful electric motor drive, quickly removes deep dirt on the bristles, keeps makeup tools hygienic, and protects skin health. 3. Unique quick-drying function, quickly blows dry the makeup brushes after washing, reduces bacterial growth, and extends the service life of the brushes. 4. Simple and stylish appearance, with silent operation technology, suitable for various home environments, simple and easy to operate. 5. Compatible with makeup brushes of various sizes to meet different cleaning needs, one machine for multiple uses, it is a must-have artifact for beauty lovers. Comment: 1. The manual measurement tolerance is 2-5g, please do not mind your replacement 2. Due to differences in different displays, the images may not reflect the actual color of the product. Thank you very much