so, if i apply toothpaste or chapstick using my finger, all is good?
“Ask your Rav if that’s true.”
I did. He said it is.
Trust. Yes, say that. The OP is talking about telling someone they are a mechallel shabbos. If you “think” they are, dont call them one. Suggest they look into what they are doing, or sugget they ask the Rav.