K.M.
Although your father in law ment well, sounds like the shirt needs to be dumped! Yes, anything that our skin absorbs is absorbed into our bodies. That's why they make skin patch medications. I wouldn't worry too much about it though, but if you washed it and it still turned you that blue, it isn't worth wearing at all.
Natural oils and sea salt scrubs should help you. The exfoliating will help. Please don't use baby oil or any mineral oil based products. It will only cause a barrier on your skin and won't let anything through.
Unfortunately, we really do need to watch what we buy and where we buy it from. There was a very recent article about some sandals sold through Wal-Mart that were made in China that had a chemical dye in it that literally caused open sores on the feet of the people who wore them. I saw some pictures and it was unbelievable! We really do have to be buyer savy and better educated on what we put on our bodies - even our clothes!
If you would like more information, I would be happy to share. There is an abundance of it. Best of luck with your second pregnancy and take care of you too!