Hello, I use a diy oil mixture of 75% mineral oil (light liquid paraffin) and 25% peg-40 by weight. Its supposed to remove sunscreen but for some reason there's always a lot of it left, even though I only apply sunscreen once a day.

The sunscreen I use is reequil ultra matte dry touch sunscreen. Its supposed to be waterproof and for oily skin, and is sort of the only sunscreen which suits me.

Should I use some sort of ester in my oil? Or just change both altogether?

Has anyone here used a urea spray made by dissolving urea crystals in water?
I saw a post a couple of years ago and the guy said he cured his KP with a home-made 20% urea spray. Is it safe? And would this work better than dissolving some urea crystals in a regular body lotion with no actives?

I have disliked my small scales with a passion due to hardwired auto off. They are accurate, but the way I work does not agree with the timer on the auto off.

I’d like recommendations for scales on the 50g-100g range that do not have auto off, or it is customizable. It can be hybrid battery/power, even usb if decent consumer grade.

My work is strictly small batch, I do not need a lab-grade setup, but a shield would be helpful.