I'm curious about the effects of laser on freckles and blemishes!

Lately, with the sun getting stronger, my freckles and blemishes have become more noticeable on my face. So, I'm looking into laser treatments for freckles and blemishes, but I'm curious if they're truly effective. I'd also like to know what kind of care is necessary after freckle treatment. If you have any tips for preventing freckles from recurring after treatment or for laser care, please share them!