Returning Items

At my baby shower I got a lot of Johnson and Johnson and baby magic shampoo, body wash, and lotion. When my LO went to his 2 month wellness visit the doctor said that he was allergic to his soap. So we switched to Aveeno and use the baby organic and haven't had a problem but now I have all this soap I can't use! If I took it to target or walmart would they let me return it without receipts? I have no idea as to were people bought the stuff. Also my baby shower was all the way back in may and LO is just a few days shy of eight months. Would I still be able to return it after that long?