What is SIRT1 and why is it relevant to skin science?

SIRT1 (Sirtuin 1) is a protein that plays a recognised role in cellular regulation, including processes linked to metabolism, stress response and longevity. In skin science, SIRT1 is of interest due to its involvement in cellular signaling pathways that influence how skin cells respond to environmental factors over time. It is frequently discussed in academic research focused on aging, regeneration and the biological mechanisms underpinning skin health.