Dr. Pen round nano cartridges are different from micro-needling cartridges. The round nano cartridges are designed for nano-needling. It can be used every day with skin serums. The round nano cartridge doesn't include any needles. Only microscopic hairlike cones are on the stainless steel chip. It won't cause any pain during the nano-needling. It's safe and friendly to fresh users. It's safe for all skin types as well. The microscopic cones on the round stainless steel chip can separate the cells of the skin to drive in the skin product and allow better absorption. It helps to improve the skin texture and tone. SAFETY WARNING Keep the item out of reach of children. LEGAL DISCLAIMER This product is not a medical device. It is not intended to diagnose, treat, cure or prevent any disease. See more

Keep the cartridge away from the reach of children. And do not reuse the cartridge. IMPROVE SKIN TEXTURE & TONE -- The round nano cartridge can be used daily with skin serums. It can increase the absorption ability of skin serums to help with fine lines and wrinkles. NO PAIN & SAFE -- The round nano cartridge causes no pain as there are no needles included. It only includes a round stainless chip covered with microscopic cones on it. ROUND NANO CARTRIDGES FOR Dr. Pen A6 -- It's compatible with Dr. Pen Ultima A1. Please do not attach it to other devices. 100% GENUINE -- The cartridges are 100% authentic and well-made by Dr. Pen.