The blue discs are a great option for the experienced Personal Microderm user who has sensitive skin. Provide gentle exfoliation to leave your skin smooth and radiant. Personal Microderm uses a patented spinning disc technology to deliver revolutionary microdermabrasion treatments and unmatched, brilliant results. The patented disc spins as it glides across the skin providing brilliant results with each treatment. Personal Microderm allows for complete treatment customization; whether extremely sensitive or precisely intense, there’s a perfect disc for every skin type.