This article addresses the mistakes that can occur during the application of polygel nails, which is a popular method for creating nail extensions. The main focus is on the problem of lifting, where the polygel separates from the natural nail, causing the nails to not last as long. The article highlights various factors that can contribute to lifting, including improper nail preparation, insufficient curing time, and improper application technique. The aim is to educate readers on these mistakes and provide solutions to help prevent lifting issues when applying polygel nails.