But for me, summer also means sunburn... unfortunately. Usually I use a sun stick only on my scar, and it works really well-- except when I forget to use it. I accidentally left my back exposed to the sun for about an hour, and I paid the consequences for it.
My scar was my only concern. So I did my research, and I'm no expert, but this is what I found.
Scar tissue is more sensitive than normal skin. That's why it's so important to keep sunscreen on. Burning can also discolor the scar in some cases.
Basically, you want to be very careful (whether you have a scar or not). I haven't heard from anywhere that it causes any serious effects, but you should still take good care of your incision. My scar is fine, but I'm not going to make that mistake again!
Lesson learned. Use sunscreen.