If you spend any time on makeup TikTok, you’ve probably watched more than one video on underpainting, a makeup technique in which bronzer, contour, concealer and blush are placed under foundation instead of on top of it. While underpainting is nothing new (in fact, makeup artists have been recommending the practice for years), it’s finally getting the spotlight it deserves. Interested in trying underpainting yourself? Keep reading for more details on the trend, plus a makeup artist’s tips for mastering the technique.