Textile Exchange has guidelines in place for products that are labeling with mention of the RCS or GRS. We do not require companies to mention pre-consumer or post-consumer content separately. This is in keeping with the guidelines found in the United Standard Federal Trade Commission’s Green Guides.
If you are not using the RCS or GRS logo on the final product, you should check with labeling laws in the country of sale. The FTC applies in the United States.
As a recommendation, we think it is generally a good idea to mention this separate materials, as consumers will likely assume that recycled material was collected from post-consumer sources.