STEP1 is the range of skin equalizers developed to refine, smooth and even out skin before makeup application. Our exclusive Equalizer Complex delivers 3 key actions:- easier application- optimized makeup result- improved wear.For what type of makeup?The Smoothing Primer specifically formulated for mature skin or blemish-prone skin to instantly fill in and blurs imperfections for silky soft skin. How to useApply after your skincare and before makeup.