Dermapen™ is very sanitary. The Dermapen™ sterile micro-needle tips are designed to be disposable and are for a single-use only to prevent cross-contamination.The Dermapen’s™ needle tip makes contact with the skin, the needles create tiny puncture in the skin’s surface, causing micro-trauma, and inducing an immune response, and subsequently, the creation of new healthy collagen. The punctures also act as micro-channels that carry topical nutrients used during the treatment deep into skin layers for an increased effect. Because the needles oscillate as quickly as they do, the tip of the Dermapen™ easily *glides* across the skin, without catching or causing any dermal tearing.