The two bottles sitting in the bathroom of the Flecks are Prell conditioner and shampoo.
There’s a bottle of Old Spice cologne on the dressing table of one of the clowns working at HaHa’s.
There’s a MAC red lipstick in the dressing room where Arthur (Joaquin Phoenix) sits while waiting to perform at the Live! With Murray Franklin. I guess he used the same lipstick to write “Put on a happy face” on the mirror.