If a serum smells bad it usually means it works., This glutathione serum smells like rotten eggs and thats your first clue its highly concentrated. Glutathione is known for targeting Reduce Glutathione's Sulfuric Smell in Skincare TikTok Faded gets its smell from glutathione, an ingredient thats super effective at reducing the appearance of discoloration in week Glutathione has a cysteine chain that causes it to have a sulfur like Amazon.com: Vervidora Liposomal Glutathione, High Absorption Liquid Glutathione Supplement, Support Natural Detoxification, Antioxidant, Improve Skin Health, Enhance Immunity, 4 Fl Oz : Health & Household Glutathione Side Effects: Everything You Need to Know Hone Health Glutathione with Cofactors Seeking Health