I have regularly used Dermalogica cleansers and moisturisers for several years without issue. Recently while traveling I had some cystic acne on my nose and had received this as part of a pack, so decided to try it out. It felt tingly on application, which intensified after about 30 seconds. After tingling became a burning sensation I began to wash it off after about 45 seconds. Over the next day or two, my nose became swollen and red, before blistering and scabbing under the skin. My skin took almost 3 weeks to fully heal but this has left permanent, noticeable depressions on my nose which don't look like they'll reduce. I've never had this kind of extreme skin reaction before from clay masques and have no idea what ingredients in this masque caused it, but I certainly wouldn't use this product again.