Bubble masking treatment add on created to deliver relief and exfoliation to skin. A few drops of warm water are applied onto back and shoulders before a Sand Your Ground mud mask is massaged into skin.Medium-grain powdered volcanic pumice polishes skin smooth, while Red Arizona Montmorillonite Clay absorbs bacteria toxins. You’re then treated to a soothing bubble mask made with Sodium PCA to help boost skin’s moisture content and prevent moisture loss.