What Does Fabric Conditioner Do? And Should I Use It?
I hear people on the internet recommend to not use Fabric Conditioner in their laundry to save the durability of the clothes. In my country, it was the norm to use Fabric Conditioner during laundry so I was at a lost.
Is it actually necessary?
To add to this, and to answer the second part of OP; no. You absolutely should not use it unless you like replacing your washing machine and having plumbing bills. For lower quality garments it will technically make them last longer; but whatever cost you save in clothing you’ll lose a thousand fold when you need to have your washer taken apart and cleaned or replaced entirely when it stops working.