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Results are natural, subtle yet impactful, and are really long lasting." I love what I do because in aesthetics, art meets science, it blends two worlds that I love and allows me to beautifully and safely restore confidence in people." Outside of work, Kristen is also a fitness instructor

Conflict of interest The authors declare that they have no competing financial interests or personal relationships that could have appeared to influence the work reported in this paper

doi: 10.1186/s11658-018-0130-0 222 LiGQiuZ

doi: 10.217669/BioProtoc.1560 46

These findings suggest that optimal NAMPT levels and activity are critical for healthy aging and overall organismal homeostasis, and both upregulation and targeted inhibition may offer potential interventions depending on the specific context and tissue

Biomaterials 178, 373382