I got a question about split ends.. how can i get them? By the sun? Washing? Natural? WHAT!!!
Anything really, it's just accumulated damage on the hair strands.
Hairs can't regenerate so there will always be a little damage on the ends no matter how slight.
I'll be honest with you dude, the best bet is not to worry.
A lot of people get them and either ignore them because they are not very apparent...or they are not bothered by them, or they get a little trim to get rid of them.
There are many factors that cause them; sun damage and other things mentioned are all factors but some people get them some people don't, relax and enjoy your hair growing out.
Growing hair out is such a long process there is no point putting another worry about the process on your mind...good maintanance and care is always helpful but just enjoy growing your hair out.
Keep it growing buddy
Peace