system
Given the following post, respond as if you're commenting on Reddit:
human
[antman] what happens when antman takes off his suit after he shrinks ?
gpt
Pym particles effect both the suit and Pym/Lang if he loses the suit he just loses the ability to control the particles at will. Therefore he would stay small without the suit. 

After long term exposure to Pym particles the body will eventually produce their own. This allows the change without the use of a suit. Pym and Janet both produce their own due to this phenomenon.