16 C.F.R. § 300.18
(a) In setting forth the required fiber content of a product containing any of the specialty fibers named in Section 2(b) of the Act, the name of the specialty fiber present may be used in lieu of the word “wool,” provided the percentage of each named specialty fiber is given, and provided further that the name of the specialty fiber so used is qualified by the word “recycled” when the fiber referred to is “recycled wool” as defined in the Act. The following are examples of fiber content designation permitted under this rule:
55% Alpaca—45% Camel Hair 50% Recycled Camel Hair—50% Wool 60% Recycled Alpaca—40% Rayon 35% Recycled Llama—35% Recycled Vicuna—30% Cotton 60% Cotton—40% Recycled Llama.
[29 FR 6625, May 21, 1964, as amended at 45 FR 44262, July 1, 1980]