I fixated on laundry

What the tittle says. It was completely randomly triggered,, my sensitive skin was reacting and I started reading about ingredients and stuff (which was my previous fixation, skin products)and few weeks later i am watching ton of videos and know ingredients like a chemist and I have more detergents and pretreaters than I use, because they work for different things and I may need them and I just like having them.

Some of my previous fixations were:sheel and wool, frogs, different types of olives, spices... and all lasted shorter. I want laundry obsessing to end.