Does heat damage collagen?
Heat does not damage collagen supplements—provided you’re cooking at a reasonable temperature. Collagen proteins keep their integrity up to 572°F (300°C) by folding and unfolding in response to the changing heat.
You can find the study on this topic here: https://www.ncbi.nlm.nih.gov/pubmed/21723833
It's also important to note that Keto Collagen+ contains collagen peptides, so the proteins are already broken down and more bioavailable than raw collagen or gelatin.