How can I get rid of laugh lines?

I am in my thirties and have laugh lines on my face.The skin on the other parts of my face is perfect and wrinkle-free. Other than laughing a lot,are there any causes for this?
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I am asking because my laugh lines show when I am laughing very hard and one guy commented that I look like a Hello Kitty when I laugh. So he sometimes calls me Hello Kitty.

Does anyone know anything that I can do at home about this laugh lines thing?Thanks a lot.
How can I get rid of laugh lines?
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