Is Undressed vegan? Erica Halliwell February 18, 2020 18:24 Updated Follow No, Undressed is not vegan. Undressed has hydrolyzed silk in it which comes from the cocoon of a silk worm. Related articles Is Dressed Up vegan? Is New Wash vegan? Is Undressed tested on animals? Is Hair Balm vegan? What is Undressed? Comments 0 comments Please sign in to leave a comment.