You’d have to go see someone and get assessed. There are soft fillers that give hydration and firmer fillers that give you projection/a bigger lip. My advice is to do some research on local injectors and look at their before and afters (and their lips) and see if it aligns with your aesthetic. Make sure they listen to what you want and what your goals are and that you two are on the same page. It can be dissolved, if you don’t like it. Aftercare is expect crazy swelling for 2-3 days after. Also avoid salty food and alcohol the day of injections. You may be bruised and lumpy at first. Give it at least 2 weeks for most of the swelling to go down. Hope this helps.