@rtjhnstn - Hot water. Shaving immediately after a hot shower is recommended for a close shave because the heat and steam opens up the pores and softens the beard. After shaving, cold water should be applied to close the pores, leaving the skin cool.
any shaving i do happens outside the shower - i just find it easier and it doesn’t waste water/all the hot water. i fill a bowl with warm water and put it in the sink (drain stopper is busted right now) to sluice the razor.
but then i take the razor into the shower with me afterwards in case while running hands over my body i find that i’ve missed a spot.
@jst1ofknd thanks - i know you can buy those, but i’m not going to as my landlord needs to simply put the stopper that came with the sink back together, as he is the one that took it apart nbd for me to use a bowl in the meantime.