@Debbie464 Soap is required, not shampoo, conditioner, body wash, or any of the other myriad of products which people have been bambozzled into believing are essential by advertising agencies (shampoo and conditioner are indeed necessary personal items, but not required by Airbnb).
I don't provide shampoo or conditioner, soap is in a small pump dispenser which I refill from a bulk container. But I do have a small basket of products that get left behind by guests- I wipe them down with antibacterial wipes, including opening the lid and cleaning that part as well, and leave them for my guests to avail themselves of if they choose. Sometimes there's some shampoo there, some sunscreen, hand lotion, bug spray, whatever. I do make it a point when showing it to guests, to tell them I sterilize all of it.
The important thing is make sure the amenities you do provide are checked off in your listing, and the ones you don't are left unchecked.