They're allowed. I think you just can't link to your own social media.Guerlain has released two new Terracotta products.
One is a universal nude glow (https://www.sephora.fr/p/terracotta-nude---poudre-eclat-naturel-P4004097.html ) and the other is a Matte sculpting powder (https://www.sephora.fr/p/terracotta-matte---poudre-sculptante-P4004098.html )
Sorry if the links aren't allowed, it was the only place I could find them. I'd be happy to remove them.