1)    For those who have the custom not to wash during the entire nine days, one may wash one’s hands, face and feet on Friday with hot water, if he is accustomed to do so every week. However, he should not use soap etc. (Shulchan Aruch and Mishne Berurah 551)

2)    One who is accustomed to immerse himself in a Mikveh every Friday, may do so even in this week. If, however, when it is cold or he is too preoccupied he sometimes neglects his immersion, he may not immerse himself on this Friday. (Mishne Berurah ibid)