Ulta's 21 days of beauty has another winner! Smashbox's Always Sharp Waterproof Kohl Eyeliner is on sale for $10 (orig. $21.00). This is one of my favorite eyeliners. The built in eyeliner sharpener guarantees that your eyeliner is always on point. This is the best eyeliner for defining the waterline. The sale has a maximum of 2 eyeliners per person. Sale is for today only!