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These are replacement nano cartridges for the Dr. Pen HydraPen H3 Pro, supplied in a pack of 10. Nano tips don't pierce the skin the way a needle cartridge does — they create micro-channels at the surface, which makes them the gentlest option in the range and the one most often used for serum infusion and for skin that can't tolerate deeper treatment.
Cartridges are single use only. Open a new one for every treatment and dispose of it afterwards. If you're unsure which cartridge suits your treatment, our cartridge guide and cartridge comparison chart walk through every pin count and nano option.
The HydraPen is a containable-cartridge device: serum is held in the cartridge and released into the skin automatically as you work, so you don't have to stop and reapply. That improves both the consistency and the efficiency of the treatment.

Before your first treatment, read important considerations for microneedling. Every device and cartridge we ship is serial-checked before dispatch — here's how to confirm yours is genuine.
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