Well, just read the Shampoo specifications
You won't find a single normal element.
It's all harsh chemicals, some random shit that starts with E ( E6767, etc...)
Sulphate, and some harsh shit like sulphate free shampoos that is a plot twist
It doesn't dry your scalp instead it kills it while remaining oily, greasy.
Last thing, ask yourself
Can I eat it without end up in hospital or damaging myself?
If yes, then it is safe
If no, then you shouldn't use it on your body either.