Collagen is a natural substance found under the skin that is extracted from human skin or from the animal, especially the cow, so it is completely safe on the skin. It is injected under the skin to improve its shape and texture.
It has been used for a very long time. It is also one of the cheapest filler types used. The injection method is very simple. This causes many people to use it.
Collagen causes allergies in 3% of women, so it should be tested twice a month before the injection, once a month and once every two weeks to make sure the body accepts it.
It is used to fill scars sometimes or signs of minor injuries, to reduce its presence on the skin and here shows the difference between Botox and fluorine because Botox can not be used to relieve scars or signs in the skin.
Collagen often lasts about 2-3 months, because the collagen injected into the skin eventually leaks into the body.