A blue hydrating mist — the color is Blue 1 on the ingredient list, not the copper. Copper PCA leads the formula, with a saccharomyces/copper ferment, a resveratrol ferment extract, and kola nut, guarana and yerba maté extracts. Twelve ingredients in total, no alcohol and no added fragrance. It sprays fine and even rather than in droplets, and dries down in seconds without tack.

Useful mid-routine as a hydrating layer between serum and moisturizer, and useful again at a desk in the afternoon. Spray with eyes closed, about six inches from the face, then press it in rather than letting it evaporate. It will mark silk, so mist before you dress. Nothing in it conflicts with acids or retinol.