*Please note- due to hygiene reasons, once purchased this product cannot be returned Replacement cartridges 0.25mm For use with Mini Pin At-Home Micro Needling System *Please note- due to hygiene reasons, once purchased this product cannot be returned Mini Pin At-Home Micro-needling Cartridges   Pack of 4 sterile, single use 12 needle cartridges 0.25mm. For use with Mini Pin At-Home Micro Needling System.    The Mini Pin is an innovative, all-in-one micro needling system designed exclusively for home use. Micro needling, also known as collagen induction therapy, is a highly effective method for promoting skin rejuvenation, stimulating collagen production, and enabling the direct penetration of active ingredients into the epidermis. As a convenient alternative to traditional derma rollers, the Mini Pin allows users to safely and easily perform micro needling procedures on their own skin at a shallow depth of 0.25mm.This compact, lightweight device operates automati