Filler

Filler is a substance used for filling under the skin, and it is used for two main purposes:

the first purpose is to hide wrinkles and scars, and wrinkles are nothing but a lack of collagen under the skin and thus spaces occur and wrinkles appear, and fillers are used in this case to fill in those voids, so wrinkles disappear.
The second purpose is to inflate and enlarge, as many girls suffer from sunken cheeks, thin lips, or a thin face, or other problems that may appear at a young age before the stage of the appearance of wrinkles much of the time, and in both cases the filler was the magic and quick solution to eliminate these two problems .