ECO. is a natural skin care range based on pure essential oils, plant extracts & vitamins. These ingredients are active & promote a response in the skin (which is what they want to improve our skin health & appearance!) If you have sensitive skin, they recommend you slowly introduce new products into your regime, one product at a time. This will give your skin time to adjust. Timing may vary for this; you know your skin better than anyone! You can patch test on your inner elbow or behind the ear beforehand using products. Apply a small amount & leave as long as it normally takes for your skin to respond, or for 24 hours. If you experience any uncomfortable sensations, such as stinging or burning, wash off immediately & contact your store of purchase.