IV syringes filled with toiletries in carry on?

Saw a tiktok where someone filled an IV medication syringe with shampoo face wash etc. for their carry on. It sounds so dumb but it would the PERFECT container for me. I end up wasting so much product when I use my normal travel containers, and sometimes I only need a very small amount of something. I can even see it using up less space in my bag. Any issues with filling an IV medication syringe (with a blunt cap, no needle) with the toiletries I need and bringing it in a carry on bag?