After a bath (and drying) I apply a dob of Veet to my middle finger and run it along the inner edge of my arse crack from perineum upwards (
don't push it into your ringpiece).
Leave for 6-7mins and then get a dampened, clean face-flannel and gently wipe between your cheeks from perineum upwards. Rinse flannel in plenty of mildly soapy water and repeat twice.
Then apply plenty of neutral moisturiser (P45 cream is good).
Luxuriate in the soft squidgy feeling and fit clean underpants.
All the hair will be gone from around your starfish but your cheeks will appear outwardly normal. Ready for a good tongue-lashing from your favoured rimming-firendly SP

.