Acrylic overlay nails involve applying a layer of acrylic (a mixture of liquid monomer and powder polymer) directly onto the natural nails without using nail tips or extensions. This process provides added strength and durability to the nails, making them less prone to breaking or chipping. The acrylic overlay can be shaped, filed, and buffed to achieve a smooth finish, and it can be painted with nail polish or left natural. This technique is popular for those who want to enhance the appearance and resilience of their natural nails while maintaining a more natural look compared to full acrylic nail extensions.