This is a must! This bonder is so good that even my clients notice the huge difference in retention! Even my oily clients are having 60-70% of their lashes still on by 2 weeks when before they’d only have 40%. HUGE!! I also put this on myself after I get a fill and let me tell ya- my retention is so much better! In the past 4 days since my last fill, I’ve only lost 2 lashes besides from natural shedding. This also doesn’t irritate my somewhat sensitive eyes. I have always been indifferent with bonders because most of them cause stickies, clump lashes together, or just make the base feel crusty but not this one! Just be sure you don’t get it on the skin, focus just at the base where the adhesive lies. But seriously if you don’t get this, you’ll regret it.