I saw one too.
I kissed her and messed up her lipsticks. And her hair was a mess from our activities. She came out of the room and went into the next customer. I looked at her in surprise. I should have told her to fix herself up first.
But in shops such as Summerville with ensuite bathroom you could see the girl washing herself up inside the glass screen bathroom.
One Summerville ML told me directly in Cantonese at 5 minutes before the end of the session: "Let me go and wash my pussy."