[Personal] How can I stop losing money due to my roommate using all my products?

Beauty Tips For Body Care
My roommate keeps using all my skincare products that I leave in the bathroom, despite me telling her to stop. I can tell because I will sometimes stop using a product and I see it continue to disappear. She usually blames it on her accidentally "spilling" the products, when it's clear she uses them all the time, e.g. micellar water, very expensive dry shampoo, baby powder. However, when I move the products to my room, my whole skincare routine falls apart.So far, I've refilled my on-the-counter micellar water with just water, so that I'm not losing money when she uses it. (Also, her face won't be as clean when she uses it). Does anyone have any other non-harmful tips on replacing products or any other suggestions?
Girls Blog 2015
Submitted by seeingtriple3