Glutathione Side Effects: Everything You Need to Know Hone Health One of our products smells like rotten eggs?! It's actually because of an ingredient called Glutathione, which naturally contains Sulfur. But don't let the smell fool you this ingredient will make Gotta love it Faded gets its smell from Glutathione, an ingredient that is really effective at reducing the appearance of discoloration in weeks. 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