ONE: This smaller device provides a 2-minute application, ideal for use approximately 10-15 cm away from your face, allowing for 3-6 layers. It's mostly intended for your face, neck, and smaller areas.

PRO: The larger device with a stronger spray enables a 15-second application, suitable for use about 30 cm from your face or body, allowing for 1-3 layers. It can be used for your entire body.