What to do about dark spots on legs?

When I was younger me & my siblings played outside in our backyard most of the time , which means I was bitten by mosquitoes quite often & scraped my knee every once in a while , now that im older there are dark spots on my legs left from the mosquito bites/bruises that have healed , & there are SO much of them. It's prevented me from showing anything that exposes my legs ; shorts , skirts , capri's etc. It's pretty bad. I've used CoCoa Butter lotion on my legs everyday since to help. I know these things take years to fade but I'm willing to take any suggestions from any dark spot corrector products just to speed up the process.

- Thanks!