I don't have a phone with a face sensor, but I use my phone in the kitchen quite a lot, for recipes, timers etc and there have been many times with wet or flour

I don't have a phone with a face sensor, but I use my phone in the kitchen quite a lot, for recipes, timers etc and there have been many times with wet or floury hands, I've fancied FaceID. Similarly when carrying out outdoor activities wearing gloves.