Measured: Finish is judged several hours after application in daylight rather than at the mirror. Oil, the skincare underneath and any setting product all shift where the light lands.
The basics
What to know about finish
Finish describes what happens to light after a product sets. Three things vary: how much light bounces back, how evenly it does so, and whether you can see individual reflective particles. Matte formulas use silica, starches and clays to scatter light and kill shine. Dewy formulas use emollients and light-diffusing pigments to bounce it back softly and evenly. Shimmer suspends particles large enough to read as separate points of light.
Judge a finish four to six hours in, under daylight, not in the mirror at minute one. Oil coming through pulls any finish toward shine, and skincare underneath can flatten a dewy base or make a matte one grip unevenly. Take a photograph by a window in the morning and another after lunch, then compare the two.
Line the four options up as a scale of reflection. Matte reflects least and lasts longest on oily skin. Natural reflects a little and suits almost everyone. Dewy reflects a lot and flatters dry and lined skin. Shimmer reflects from discrete particles and belongs in placement rather than across a whole face. Skin condition, more than preference, decides which one still looks right at 5 pm.