As an Asian, my eyelashes were never the longest nor the thickest. However, with this serum I can actually see my lashes becoming more thick. Before using this serum, my bottom lashes were basically non-existent. But after using this, I can actually see them. I've used this on my brows and haven't yet to see any improvements.
Pros: Works, Doesn't irritate eyes, thickens lashes, lasts a long time
Cons: Wand is more rough than your average mascara wand, serum can become cloudy easily.