Stumpf after only 9 months, but LIFETIME WARRANTY

The cuticle scissors looks elegant and cuts initially very sharp. Have used it only for my cuticles. Also no other Mitbenutzerin.
After about 9 months the scissors but blunt and cut very badly.

But oops: On the Amazon page stood at purchase (and shown at the time of this review yet):
"- Lifetime warranty
...
Never dull, itself does not wear off; if they do, we will replace them "

So Amazon customer emailed.
Response within 1 day: new cuticle scissors will be sent. Old scissors should be free of charge sent back to Amazon.

Conclusion:
Stumpf after only 9 months. The product I will not buy it again. Do I need but not wg. the "lifetime guarantee" by Amazon (not MarketPlace sellers!). Let's see how long that is still touted and implemented.