That's fine - thank you. It still doesn't address my questions - and to be honest, isn't hugely practical in day-to-day life. My hairdresser is deaf. She relies a lot on lip reading. So although I wore a mask to the salon, I had to remove it to speak to her. I did do a lot of nodding & shaking of head, and I don't go in for chit-chat at the salon anyway. But in order to colour and style my hair, she had to move the straps to the back of my neck and clip them together. Then I was told I could take it off when under heat. I still don't get why touching the outside of a mask which is meant to prevent droplets getting through to the outside is any more dangerous than touching your other clothes.