They can be finicky to get placed just right but when they work, they work. Having to use a petroleum based eye ointment for a condition, I find it leaves my lashes "greasy" no matter how much I wash it off...so if I wear mascara, by noon it has smeared on the skin around my eye. These are a great solution as there is nothing to smear! I think if you are experienced at putting on the glue type false lashes, these would probably be a piece of cake for you. Otherwise, expect a learning curve.