"Turning waste from an animal product into something people use is certainly an example of sustainability, experts said.But neither beef tallow nor salmon sperm have robust medical data to support their effectiveness, said Dr. Angelo Landriscina, a New York City dermatologist who has taken to social media to debunk what he sees as skin care misinformation."https://apnews.com/article/skincare-beef-tallow-salmon-sperm-dermatology-22a32c5b11ef5ec7be190bc16a0d92e4#PublicHealth #beauty #skincare #meat #natural #MAHA #chemicals