Nellie Awendo Share Tweet Profile Topics Started Replies Created Engagements Favorites Search topics: Forum Topics StartedViewing topic 1 (of 1 total)TopicVoicesPostsLast Post Replacing propanediol 1,3 with propylene glycol Started by: Nellie Awendo in: Cosmetic Formulation Support Forum22 5 years ago NSS Instructor Viewing topic 1 (of 1 total)