Skin doesn't just age on the surface: it also ages in its instructions, meaning in the DNA.
For decades, we treated skin aging as a surface-level problem: wrinkles, spots, texture. But science now shows that much of skin aging happens at an invisible level, in the genes, because a set of chemical “switches” gradually appear that decide which skin genes stay on or get turned off. Over time, sun exposure and inflammation increase these switches, and the skin starts behaving like older skin because, at a molecular level, it has fewer active genes.
This is where a new generation of aesthetic medicine comes in: no longer the kind that disguises, but the kind that works on the skin's biology at its source.
Laser may modulate the skin's epigenetic pattern.
A pilot study published in 2026 in Scientific Reports (the Nature group) brought the first evidence, in humans, that laser can do more than remodel the surface: it can modulate the skin's epigenetic pattern. In 22 adults, over 6 months, the researchers observed that:
- 01After a treatment cycle, hundreds of changes appeared in DNA methylation in regions that control collagen production, skin renewal and tissue repair.
- 02At around 84% of the sites most associated with aging, these changes moved in the opposite direction to aging.
- 03The changes weren't immediate: they emerged weeks after treatment and strengthened over time, a sign of a real biological process rather than a passing effect.
- 04In parallel, there was visible clinical improvement in pigmentation and skin texture.
In other words: at a molecular level, the treated skin didn't just look better. It started behaving more like younger skin.
This is an early study, with a small number of participants, and the magnitude of the clinical benefit varies over time. It doesn't demonstrate a reversal of biological age, nor does it prevent disease. What it does demonstrate, and this is notable, is a mechanism: evidence that a well-indicated laser acts on the skin at a depth that goes far beyond what's visible in the mirror.
This is precisely why we believe in preventive aesthetic medicine: intervening with judgment, at the right time, grounded in what science shows rather than in promises.
Schallen KP, Schomacker K, Banila C, et al. Non-ablative fractional laser 1940-nm treatment modulates epigenetic signatures associated with skin aging in a split-face investigation. Sci Rep. 2026;16:17695.
The skin is the body's largest organ, and the only one that visibly displays the sum of everything it has lived through. Caring for it early, in an informed way, isn't vanity: it's investing in the health and integrity of an organ that protects us for a lifetime. In my practice, this translates into an individual assessment and a strategy that combines prevention, science-based technology and long-term follow-up. There is no single treatment that fits everyone. There is the right decision for your skin, your age and your moment.
You can already talk about this in your consultation.
Specific skin longevity protocols are being designed and will be available soon. Until then, this approach can already be discussed and folded into your plan, in an assessment consultation.
Book a consultation→The first step is an assessment consultation.
To understand your skin, your goals, and work out which approach makes sense for your case.
- · Medical assessment before any treatment
- · A written plan, no pressure
- · Lisbon and Cascais
The information on this site is educational in nature and does not replace a medical consultation. The indication and treatment plan are always set out in an assessment consultation. Results vary from person to person. Case images are used only with written consent and clinical context. No results are guaranteed.