Ballet flats are a category of footwear which have been influenced from the footwear that ballet dancers dance in. They are shoes that are minimal in style and design much like the ballet shoes and have no design characteristics which do anything greater than cover the foot. They do not have an elevated high heel and they also don't have any support characteristics in the arch. The minimal characteristics also means that they need to fit the feet tightly to remain on the foot. The structure means that they don't conflict with how the foot functions or grows. There isn't anything inherently bad with these sorts of shoes and they're popular.
What goes on should you do require some kind of arch support? There are several medical conditions of the feet in which some form of support beneath the foot is required. Often that is only needed in the short term and other times it can be a longer term necessity. The types of issues that will benefit from shoes with more support included might be something like tiredness in the legs and feet, especially in those people who are standing on their feet all the time at the workplace on hard surfaces. There may be pain in the arch area of the foot from conditions like plantar fasciitis or problems with the tendons, for example posterior tibial tendon dysfunction. In some cases, individuals choose to wear shoes with some kind of arch support as they quite simply just feel more comfortable using them.
What if you prefer wearing ballet flats and need some arch area support? The main choice is to cease wearing the type of shoes and use other types which do involve some foot posture support that are part of the footwear. This may occasionally only be a short-term adjustment and you can go back to the ballet flats afterwards. Foot orthotics are probably the best way to deal with alignment conditions of the foot and use them if you require arch support. The issue with ballet flats is the fact that there is no room in the tightly fitting shoes to put the foot orthotics in to. The bespoke kinds of foot orthotics can be reduced to eliminate plenty of bulk and might have the ability to squeeze in these shoes when they are not very tight. There are self-adhesive padding such as instant arches which could be stuck within the ballet flats to provide some arch support. This isn't going to be as effective as a proper foot orthotic however they are a compromise that might help. If the problem is comparatively moderate, the usage of these instant arches to provide arch support in the ballet flats may very well be all that is needed. Having said that, in the event the alignment condition that needs this support is more severe the compromise probably are not as useful.
At the end of the day, in order to keep using the ballet flats and need arch support, you are really only getting it if you are able to compromise. You additionally might have to maybe change your shoes to an alternative variety in the short to medium term if you want to recover from the problem that you have got.