longevitywatch

What actually works against skin aging?

Moderate evidence

Using sunscreen daily is the best-supported way to slow skin ageing, supplemented by not smoking, moderate alcohol consumption and sufficient sleep. Cosmetic options such as thread lifts and honey in creams have a weaker or not yet sufficiently proven basis and call for a critical weighing of the risks.

What does workDoes sunscreen also protect against skin ageing?

UV radiation from the sun and tanning beds is the single biggest cause of visible skin ageing. Wrinkles, pigmentation spots and loss of elasticity accumulate over years, sometimes invisibly, only to become apparent decades later. Chronic exposure also increases the risk of skin cancer through damage to the DNA of skin cells.

Using sunscreen every day is the best-supported way to slow that process. Both chemical filters and some natural ingredients, such as lignin and melanin, absorb UV radiation. However, standalone natural ingredients generally offer less protection than ordinary commercial sunscreen, and their side effects have not yet been studied sufficiently.

Lifestyle is the second major lever. Smoking, excessive alcohol, too little sleep and an unhealthy diet measurably accelerate skin ageing1,2. These factors reinforce one another and interact with genetic predisposition and UV damage. The exact contribution of each individual factor is difficult to measure, but the combined effect has been clearly demonstrated.

Your skin also ages from within: skin cells lose their ability to divide, protective structures at the ends of your DNA wear down, and hormone levels decline. The result is less collagen, causing the skin to become thinner and looser. This process cannot be stopped, but the pace varies from person to person and may be partly influenced3,4.

Honey in cosmetic products has shown interesting properties in laboratory research, but solid evidence in humans is still lacking. Thread lifts, in which threads are placed under the skin to lift sagging tissue, can produce visible results. The risks are real, however: bruising, infections, inflammatory nodules, nerve damage and thread migration. The outcome depends strongly on the experience of the practitioner5,6,7,8.

The evidence
8 studies

The claims are based on reviews and observational research (PMID 40072791, 39604792, 29692196, 20883261, 33360043, 24305429, 39760325, 29285880). Sun protection has the strongest evidence. Lifestyle interventions and internal ageing processes are moderately supported. Honey and thread lifts have limited clinical evidence in humans.

Last checked: June 2026 · how this was judged
Related answers

Do collagen supplements work against skin ageing?

Oral collagen measurably improves elasticity, hydration and wrinkles, after as little as 4 to 8 weeks at doses of 1 to 5 grams per day. When choosing a supplement, pay attention to its composition: the amount of bioactive peptides appears to make the difference.

Yes · Moderate evidence

Does red light therapy really help against skin ageing?

Red light therapy measurably reduces wrinkles and skin roughness, with the strongest support coming from professional treatments involving multiple sessions. For home devices, the evidence is still too thin to promise the same effect.

Yes · Moderate evidence

Does resveratrol really help protect cells against ageing?

Resveratrol protects cells impressively in the lab, but whether that also works in practice for you is uncertain: the body breaks the substance down quickly and large human studies are largely absent.

Preliminary evidence

Does sunscreen also protect against skin ageing?

Using broad-spectrum sunscreen daily demonstrably slows sun-induced skin ageing; anyone with concerns about chemical filters can switch to a mineral variant containing zinc oxide or titanium dioxide without any loss of protection.

Yes · Moderate evidence

Do chemical peels with fruit acids help against skin ageing?

Chemical peels demonstrably help against sun damage, wrinkles, and pigmentation spots, but for brown spots laser treatments perform better. For stubborn pigmentation such as melasma, a peel alone is simply not enough.

Yes · Moderate evidence

Does sleep deprivation age your skin faster?

Sleep deprivation demonstrably worsens your hydration, elasticity, and wrinkles, after as little as one poor night. Aim for consistently adequate sleep, and combine it with sun protection for the best result.

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