Don’t be mislead by imitation rollers that boast “the most needles”. Though we want to maximize the number of perforations, too many needles compromises the safety and comfort of the treatment. Imagine a bed of nails: while a bed of nails can easily support your body weight without a nail perforating your skin, a single nail would easily penetrate your skin under the same pressure. Similarly, a roller with too many needles will require dangerous and uncomfortable amounts of pressure in order to penetrate the skin to the appropriate depth. The eDermaStamp® employs the optimal number of needles to maximize effectiveness, safety and comfort.