I'm guessing she meant OB - meaning the oil based lubricant.
I use the moisturiser and the water based lubricant (or I used to - that's currently off the table as I seem to have been sandpapered down there
) and found both good. The lubricant does have some hydrating properties, but if it's a moisturiser you need, you need to go with the VM and just use the OB or WB lubricants for intercourse. (OB is not suitable for use with condoms)
The Yes customer service team were really helpful when I contacted them with a query, so if you have any questions, you could always ask them.