IPL mode inquiry

While looking into IPL, I noticed that there are several modes of IPL. Could you tell me what modes there are?

I have a skin that is a mix of freckles and blemishes, so I want to get IPL treatment because of the freckles, but I heard that if you get IPL treatment when you have freckles, the freckles will get darker...ㅜ

Can I get IPL treatment when I have freckles?