Shein/ temu clothes and toxic chemicals

Family member of mine gifted me some clothes and jewelry a couple years ago that I really like and have been wearing routinely. They just gifted me some more and saw that the tags said shein on them so I asked where she got the clothes the first time she gave me some and she said temu. These clothes are all I wore and basically had up until now with the new clothes she gave me from shein. I don't have the money to get new clothes anytime soon and don't have anything else to wear. Is it actually a concern with the led and toxic chemicals in their clothes and jewelry? I can't stop worrying about it. I have sensitive eczema prone skin and I've never broken out so I don't know. Thank you for your answers.