Deliver anti aging moisture to your skin with the blue marine algae mask from peter thomas roth a hydrating gel treatment mask rich with blue marine algae a soothing nourishing seaweed that infuses skin with nutrients and humectants to help defend against dehydration and prevent future damage the gel contains moisture energising tea sourced from the jeju island of korea to deliver deep nourishment and abundant moisture to skin and antarcticine a unique glycoprotein sourced from arctic gla