Used as an additive to your Clarins products. I add a few drops into my orange exfoliating cleanser, making it deliciously creamy. Feels incredibly smooth and always leaves my skin glowing! Great for smokers or people who live in congested cities. You can add drops to any part of your skincare routine making it completely costumizable! When my skin feels congested and dull I add drops to my cleanser, mask, toner, and moisturizer, and also BB cream. Its incredibly gentle and have had no sensitivity!