MAC Pearlglide eyeliners are shimmering eyeliners with a medium tip, it's hard to do a fine line with these, but they are richly pigmented and shimmery, which is refreshing as a lot of so called shimmery eyeliners often barely shows any shimmers once on the eye.
Undercurrent is a rich forest green with shimmers, very gorgeous. The pearlglide eyeliners apply without much tugging, I do find depending on the weather they can sometimes be a bit soft and crumbs on my eyelashes, which is a bit hard to clean and affects my mascara application.
Overall 4/5. Wish the consistency would lead to less crumbiliness.