What is it: Quick applying, odor-free Powder Perfection - Step 1 Base Coat from OPI. What it does: A resin base coat used for optimal adhesion of dipping powders. Easy brush-on application & color-coded cap to help nail techs with quick identification. What else you need to know: The first step used in a Powder Perfection service. Powder Perfection is a quick-applying, odor-free acrylic alternative that promotes a clean-air environment while offering gel-like shine.