15 days. Xiulaiya blue copper peptide ice cream soft film is a mask that deeply moisturizes the skin. After each use, the skin will become soft and moist. Because of its mild composition, it is recommended to use 1-2 times a week, and 15 days can see the effect. Xiulaiya specializes in a series of facial care brands based on Centella asiatica, including Xiulaiya Cosmetics Store in Haicang District, Xiamen, which was established in April 2022 1.