Hi Desiree,
Thank you so much for your feedback and for being a valued repeat customer — we truly appreciate your continued support and trust!
We're sorry to hear the chips felt like they didn't provide enough friction or wore out during your application. Our 0.20mm silicon nano chips (the specification you ordered) feature rigid, 0.20mm-long nano tips made from high-quality medical-grade silicon.
They are clearly designed and labeled as single-use only. If a cartridge was reused, it could lead to reduced effectiveness.
We'd love to understand more about your experience to provide the best guidance — could you please email us at support@nanodermapen.com with a few details? (e.g., Was each chip used only once? Number of passes, or serum type?)
We're happy to discuss a solution that works for you, such as personalized advice or options for fresh chips.
Your input truly helps us improve and serve our customers better.
Best regards,
NDP Support