I haven’t tried chemical lash serums due to my ultra-sensitive eyes, but I’ve tested several brow-growth products, and this one is my favorite by far. Within weeks of use, I sprouted seriously robust arches, the kind of Brooke Shields-level brows that harkened back to what I had as a (pre-90s waxing!) teen. I love it so much, I re-upped with a fresh purchase earlier this month. 

This is the product I’d recommend to anyone with scant or thinning brows. It’s a breeze to use (just swipe it on in the morning and at night), and it’s nonirritating for most skin types. Few products meet my insanely high expectations, but this one is stellar and effective! No, it’s not cheap, but if you feel self-conscious about balding brows, it’s worth every penny.