Revive a dull, congested skin appearance with the invigorating Hungarian Thermal Water Mineral-Rich Atomic Heat Mask from Peter Thomas Roth. Featuring mineral-rich thermal water, this hydrating face mask heats on contact with skin in order to open up your pores and impart key nutrients.Use 2-3 times a week or as desired. Apply generously to clean, dry skin. Massage and leave on for up to three minutes, then activate the flash of heat by wetting fingertips with cool water and massage the mask into skin. Once heating sensation diminishes, rinse thoroughly. For external use only.