Boysen Konstrukt Permaplast is a high-performance acrylic bonding paste mixed with cement to create a skimcoat for interior and exterior concrete surfaces, used to correct imperfections like bubbles and honeycomb by providing a smooth finish before painting. It's a versatile product for minor repairs, offering excellent adhesion, crack minimization, and water resistance, and is applied with a trowel or putty knife to achieve a luxurious smooth finish.