Cartridges are sold separately. $19 per one cartridge

These heads are suggested to use for RF fractional micro-needling machine.

The gold-coated needle is more durable and has high Biocompatibility.Patients with a metal allergy could also use it without concerning Contact Dermatitis. 25 microneedle as electrodes is able to reduce pain and allow easier dedicated depth control. It is more adaptive for small area treatment such as eye around areas and lips.
Differences between insulated and non-insulated styles:
The insulation style cartridge can achieve point-to-point energy. For example, the 2mm depth you choose will only release energy at 2mm
For non-insulated style cartridge, energy will be released from 0 to 2mm during operation, which means that the energy will be affected from the skin to the depth you set, and the pain will be strong
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