Alpha Lipoic Acid is a highly potent antioxidant and can restore a renewed skin appearance, improving visible skin texture and tone when applied topically. This formulation uses an exceptionally high 5% concentration of high-purity Alpha Lipoic Acid. Notes: 1. Alpha Lipoic Acid is highly sensitive to sunlight. Please do not expose to direct sunlight. Application to face is recommended at nighttime only. 2. Alpha Lipoic Acid is less stable in formulations that contain water and use of formulations of ALA containing water is highly discouraged. This formulation is water-free and may feel slightly "oily" for a few seconds after application. 3. This formulation contains an extremely high concentration of ALA. Daily use is not recommended since such a high frequency of use can cause skin sensitivity. Please follow suggested use frequency. Directions Apply 1-2 drops over the entire face a maximum of 2-3 times per week. This treatment is highly concentrated and daily use is not recommended. Do not use on irritated or sensitive skin. If irritation occurs, cease use and consult a physician. Use only as directed on unbroken skin. Patch testing prior to use is advised. Refer to our in-depth guide to patch testing. Keep out of reach of children. Store in a cool place. Ingredients Propanediol, Thioctic Acid. Our formulations are updated from time to time as part of our commitment to innovation. As such, the ingredient list shown here may vary from the box of the product depending on time and region of purchase.