takes some practice to get right [SEP] i have seen these type of curlers around for a while now and had been curious to try them out however upon opening them i was disappointed by the size if you have long hair and a lot of it one pack will definitely not be enough as is the case for mei was confused as to how to put them on however luckily for me my sister knew how to do it since she had seen someone else try out this same style of curlers but from another brand since she knew how to apply them i told her to try them out for me and let me know because i knew i would end up frustratedhere is her take on them they are tricky to apply at first and it takes a while to apply them so make sure you have something else to keep you busy while you do this however once you know what you are doing they are no longer tricky but they are still time consuming it takes time to section out the hair put the curler in roll it up and repeat also it is best if you do this at night if you are someone who has a sensitive head and is prone to headaches from wearing certain hairstyles i put these on at around pm and wore them for the rest of the day after applying them i was lounging around and watching a movie since i was laying down i did not notice any discomfort however once i was sitting up it was not long before i felt a tension headache coming on so i would say that these are not good for someone who is sensitive to pressure from hairstyles they do not look heavy but there is a certain weight to having your hair pulled into the curler which can cause discomfort i decided to sleep with them on and was able to sleep just fine since i did not have any of the curlers directly on the back of my head upon taking them out i had some nice curls but i also had some wonky ones i do not know the exact cause of that rolled wrong hair not pulled in correctly moved during sleep etc however i still liked the results and the curls held up for me despite not having using any curling cream gel or anythingall in all they are a good product to try out and they allow you to get some curls without heat styling but they can be tricky to use