The named products
On this page10
The wording
A personal care product for this purpose "shall include only shampoo, hair conditioner, and bath soap". A closed list of three.
Which leaves a lot outside
Body lotion, body wash as distinct from bath soap, facial cleanser, mouthwash, shower cap, shaving kit, vanity kit. None of those is a personal care product under this definition.
The body lotion case is the commercially obvious one
A small plastic bottle of lotion is not within the ban as written. Hotels that moved everything to dispensers often did so for consistency rather than because every item was required to go.
Bath soap includes a bar
Which is the oldest amenity format and was never in a plastic bottle. A wrapped bar is unaffected and remains the simplest compliant soap.
Do not over-read it either
The list is for this definition. It does not say body lotion is unregulated generally, only that it is not the thing this statute prohibits.
Other states name different products
Which is the second place their statutes diverge. A product range built on California's three-item list may be differently placed elsewhere.
And the guest does not know the list
A property with dispensers for shampoo and a small plastic lotion bottle looks inconsistent to a guest even where it is lawful. That is a brand decision sitting on top of a compliance one.
Which is the useful thing to tell a customer
Here is what the law requires, here is what it does not, and here is what your guests will read into the difference. A supplier who can say all three is worth more than one quoting a product list.
Keep the list where the sales conversation can reach it
Shampoo, hair conditioner, bath soap. Three words, quoted from the statute, settle most of the argument about what has to change and what does not.