Skin longevity: A paradigm shift in aesthetics

In the ever-evolving landscape of beauty and wellness, a notable shift has emerged from the traditional pursuit of decreasing the appearance of skin aging toward a more holistic approach centered around rebuilding skin health (Figure 1). This transition marks a pivotal moment in aesthetic philosophy, in which we move from treating the symptoms to treating the causes of skin aging with the goal of slowing down or reversing skin aging. With scientific advancements helping to decode the intricate mechanisms of aging, we find ourselves at the forefront of a new era—one that realizes the telomere(definition) attrition, cellular senescence(definition))." style="text-decoration:underline dotted; text-underline-offset:2px; cursor:help;">hallmarks of aging(definition) as opportunities to make fundamental advances in aesthetic medicine. The expanded hallmarks of aging encompass a myriad of cellular processes including genomic instability, telomere attrition, epigenetic alterations, loss of proteostasis(definition), disabled macroautophagy, deregulated nutrient-sensing, mitochondrial dysfunction(definition), cellular senescence, stem cell exhaustion, altered intercellular communication, chronic inflammation, and dysbiosis.1 Among these hallmarks, cellular senescence emerges as a linchpin—a phenomenon intricately linked to the root-cause aging process.2 Indeed, cellular senescence, an irreversible cell cycle arrest, holds particular significance in the realm of skin health. Senescent cells produce pro-inflammatory cytokines and matrix metalloproteins, creating a detrimental secretory profile known as the senescence-associated secretory phenotype (SASP).3 By targeting senescence, the next-generation of skin aging treatments will be expected to lead not only to structural improvement in collagen and elastin, but also restoration of skin function at the level of the cell. In our quest to combat cellular senescence and rejuvenate aging skin, the emergence of senomorphics—compounds such as metformin and mTOR(definition)-inhibiting drug studied for extending healthspan and lifespan." style="text-decoration:underline dotted; text-underline-offset:2px; cursor:help;">rapamycin(definition)—presents a promising frontier.4 Studies have shown that rapamycin and its analogs, which inhibit the mechanistic target of rapamycin (mTOR), are pharmacologic brakes that can effectively decrease markers of cellular senescence while enhancing collagen production, thereby offering tangible improvements in skin structure.5 As we explore the potential of these therapies to target skin aging, we begin to envision a future where antiaging interventions extend beyond cosmetics to impact the very core of organismal aging. However, the application of longevity principles to skin health is not limited to combating cellular senescence alone. Rather, it involves providing the skin with multifactorial tools targeting the hallmarks of aging. In younger patients with concern of premature senescence, this may entail boosting skin health through strategies that mitigate DNA damage response, mitochondrial dysfunction, and telomere attrition, thus laying the groundwork for prolonged skin vitality. As we navigate this uncharted territory of skin longevity, a host of considerations come into play. From the mode of delivery, whether topical or injectable, to the frequency of exposure, intermittent versus constant, and other considerations, the nuances of aesthetic practice in the age of skin health span demand careful deliberation. It is no longer sufficient to merely address skin structural concerns; instead, we strive for comprehensive improvements that transcend skin structure and demand skin function. The collective resolve to advance aesthetic dermatology by targeting multimodal hallmarks of aging aims to democratize such health benefits for all skin types. As such, the shift from masking the symptoms of aging to rebuilding skin health represents a fundamental reimagining of our approach to aesthetics. By targeting cellular senescence and other longevity pillars, we pave the way for a future where skin rejuvenation becomes a cornerstone of holistic well-being. Integrated research and development are at the core of realizing this equitable vision in regenerative aesthetics. Not Applicable.