Bitter orange possesses a complex chemical makeup. Of particular value is the oil that is extracted from the petal of the bitter orange tree and is particularly effective at stimulating cutaneous tone. Bitter Orange is also known as Bigarade Orange or Neroli.

This new, patented ingredient improves skin around the eye area by stimulating natural enzymes that help strengthen under-eye area capillaries. Studies demonstrate the effectiveness of Haloxyl™ and its ability to increase skin density to better support the microvascular network in eye area skin and alleviate inflammation.

Known for its affinity with skin and its powerful ability to improve the appearance of skin aging. 10.5% of Pure Vitamin C (L-Ascorbic Acid) is the key ingredient in the Kiehl’s Dermatologist Solutions product Powerful-Strength Line-Reducing Concentrate.