After cleansing and toning in the evenings, apply a pea-sized drop of Night Serum in a thin layer to the face, neck and, if desired, décolleté. In the morning, we recommend using Dr. Hauschka Day Care products, which protect and help the skin to retain the strength it built up during the night. Protect against light and heat. To first open Night Serum: Night Serum has a unique cap that allows the product to stay fresh without the use of artificial preservatives. 1. Do not unscrew cap when opening product for the first time. Twist cap clockwise to tighten as if closing. Only tighten until the cap stops. This will break the cap's seal. 2. Twist cap off in a counter-clockwise motion. 3. Squeeze out a pea-sized amount of Night Serum.For best use, store Night Serum in a horizontal position. Note: Always hold the tube gently so you will only squeeze out the proper amount of Night Serum needed. Holding the tube too firmly or squeezing the tube too hard will result in the release of more product than is needed and may cause the tube to leak product.