Update: I returned both colors. The formula does not work on my hooded eyelids, resulting in aqua and blue smears on my eyelids. The aqua also goes on unevenly. For reference, Stila Sparkle Waterproof Liquid Eye Liner and Physicians Formula 2-in-1 Lash Boosting Eyeliner (in the skinny silver pen) work best on my eyelids.
Here are quick swatches of the Stila All Day Waterproof Liquid Eye Liner in Turquoise and Cobalt.
I haven’t worn them yet, but the thin felt tip and strong color are promising. Turquoise is a beautiful pastel seafoam green. Cobalt is a strong blue that’s just short of bright, primary-color blue. Both go on wet and shiny and dry within seconds to a matte finish. I went over the lines more than once to make sure the color was solid, but the line is pigmented in just one stroke.
Bonus swatch in the last picture of theBalm’s InStain Long-Wearing Powder Staining Brush in Swiss Dot, a deep, bright orange with a hint of red.