I'm going to try out the tissue trick! Unicorn, I get this too if I don't moisturise there every day. When it first started I panicked but spoke to my GP on the phone who advised me to use over-the-counter hydrocortisone cream for a week and then just moisturise. A tip with emollients like aveeno and e45 is to apply them in the direction of hair growth, rather than rubbing them in in all directions. It helps to avoid irritating the hair follicles. I think your plan to moisturise and see your GP if it doesn't improve is sound. Hope it eases off soon. Itchy boobs are not fun!