Ingredient lists may change from time to time. View full ingredients list here. There any many reasons this may happen, including regulatory changes or ingredient sourcing. Though a specific ingredient may change, there will not be a noticeable difference in the product performance. It is possible that two versions of the same product may be on the shelf at the same time until the newer version is fully phased into inventory. For the most up to date ingredient list, please reference the product package itself.