Forest green PET pen with 6 stainless steel rollerballs and lid. Transparent green PET refill cartridge (15 ml) in the pen. Stored together in a sliding cardboard box. Application: 1. remove the lid to expose the 6-ball rollerball applicator. 2. turn the lower part of the pen to the "ON" position 3. place the roller directly on the hairline and make sure that all six balls are in contact with the skin. 4 Press once to dispense the serum. 5. massage it in with slow, circular movements over the hairline. 6. if necessary, press again to cover the entire area (corners, forehead, temples). 7. continue massaging for a total of 2 minutes. 8. turn the pen to the "OFF" position and replace the cap firmly.