In spite of all the care that goes into manufacturing our products and the numerous tests we carry out before they go on sale, if you notice the slightest reaction we would recommend you stop using the product, and contact your doctor if necessary. We also advise you to keep the product in question and contact us so we can investigate the situation. You can call us on +33 (0)1 43 34 75 21 or by email at: consomustela@expanscience.com.The safety of Mustela products has been our top priority for over 65 years.