The unique preparation of the Kiehl’s Blue Herbal Cleanser treats skin on contact to help target the appearance of blemishes. Skin appears clearer and is more comfortable. Tested under Dermatologist supervision. Blue Herbal Spot Treatment is a suitable blemish treatment for sensitive adult and/or blemish prone skin. Contains Salicylic Acid. Inspired by the original Blue Astringent Herbal Lotion formulated in 1964 - rumor has it Andy Warhol was a fan!