100% authentic Dr. Pen A10 replacement cartridges — individually wrapped, sterile, and disposable. Compatible exclusively with the Dr. Pen A10 microneedling pen. ⚠️ Important: A10 cartridges are NOT compatible with other Dr. Pen models. Please ensure you are ordering for the correct device. Pin Type Selection Guide Pin Type Best For 12 Pin Acne marks, pitted scars, sunken scars, stretch marks 24 Pin Anti-wrinkle, moisturizing, lifting, firming, lightening spots 36 Pin Anti-wrinkle, hydrating, lifting, firming, lightening spots 42 Pin Deep acne pits, blemishes, wrinkle removal, stretch marks, hydrating Nano-R Fine lines, light acne marks, pore tightening, daily care — ideal for sensitive/thin skin Key Features 100% Authentic — produced directly by Dr. Pen Individually wrapped — sterile and safe for single use Disposable — reduces risk of cross-infection Ultra-fine needles — minimizes discomfort and speeds recovery Secure bayonet port — easy attachment to the A10 device How to Use Prep: Double-cleanse the treatment area and put on gloves Sterilize: Sterilize the cartridge with 70%+ isopropyl alcohol and allow to air dry completely Attach: Remove the protective cap, align the cartridge with the A10 pen, and twist to secure Set depth: Rotate the dial to select needle depth appropriate for the treatment area Apply serum: Apply hyaluronic acid or suitable serum to help the pen glide smoothly Treat: Work in small sections using vertical, horizontal, and diagonal passes Dispose: Safely discard the cartridge after each single-use session 10 pack — sales are final. No returns, no exchanges. Professional use only. These cartridges are intended for use by licensed estheticians and skin care professionals trained in microneedling protocols.