So yeah, it was mainly my two light blue shirts that like..bleached out on the back.
I was wondering if this happened to people or ..what kind of fabric wash they use for there colors? :/

I have a number of light blue shirts, but have never had that problem. Although I know I've seen a blog or two before from people who have had problems.

Anyway, I use Method detergent, machine wash cold and hang dry, and I've never had a problem with my shirts.

Do you share a washer by any chance? Sometimes someone else will spill powdered bleach and that can do it - really annoying!

Just an aside - the major issue I've heard before is with silver shirts (something about the dye can interact with some people's perspiration), and the solution is to wash them before wearing them.

omg... i have the same problem!!

for my yeti tee i had this huge orange stain on it after the wash... i have no idea why!! (i waited weeks until they had it online again to buy it)

yeah, i changed detergent to tide and everything seems fine now.
i still wear them if they have spots. ._.

Yup, I had a light blue we can fix it shirt that got white spots..they're not too bad, so I still wear it.