Caste of Costumers
Here are relevant references from the Books where the Caste of Costumers is mentioned.
While not specifically titled a Caste, this group is mentioned along with others that are.
I make no pronouncements on these matters, but report them as I find them.
Arrive at your own conclusions.
I wish you well,
. . . some of the girls were permitted cosmetics and slave silk; generally, however, girls in the pen are raw, totally, save for their collars and brands, as are male slaves; the costumer, the perfumer, the hairdresser then does with them what he is instructed; most retention facilities in the pens, however, are not so comfortable;
Tribesmen of Gor Book 10 Page 16
"This cord," said Marcus, "may function as a slave girdle. Such may be tied in several ways. You, as a slave, doubtless know the tying of slave girdles."
. . .
"I am not a professional slave trainer," said Marcus, "or costumer or cosmetician, but I will show you two of the most common ties. Others you might inquire of, when the opportunity permits, of your sister slaves."
Magicians of Gor Book 25 Pages 28 - 29