Kosas GrowPotion Fluffy Brow + Lash Boosting Serum ($48 with Free Shipping) is a new 2-in-1 brow and lash boosting serum that was recently launched into the brand’s permanent collection. This serum is prostaglandin-free.
Prostaglandin is a popular ingredient in many lash growth serums like Latisse but it’s also an irritant. It also h...
