Latisse (bimatoprost) was the first FDA approved product to promote eyelash length, thickness, and darkness
Since then, OTC derivatives containing prostaglandin analogues have emerged, like Grande Lash, Neu Lash, Lash Boost, and Babe Lash
All of these can promote eyelash growth but be careful of side effects including:
Eyelid / Eye irritation
Darkened eye color
Darkening of the eyelids
The iris becomes darker due to increased melanin pigmentation. People with green eyes or hazel eyes are the highest risk. This reaction is less likely if you have completely blue eyes but those with specks of brown are at risk too!