The best Lash Filler (aka Lash Lift) products, straight from Italy! Professional treatments for enhancing and curling natural lashes. InLei®’s Lash Filler is an entire treatment line, so you get so much more than just your standard lash lift. In fact, it actually nourishes, strengthens, and thickens the lash hair. InLei®’s Lash Filler even guarantees it’ll thicken the hair, by up to 24%, and it’s the only product line we know of that makes that promise. We’ve seen the Lash Filler heal damaged lashes, make lashes grow, and nourish the hair so it’s unbelievably soft.