Anti-Aging
Understanding skin ageing: intrinsic and extrinsic
Part of skin ageing is unavoidable; a substantial part is not. Knowing the difference makes it immediately clear which anti-aging promises are plausible — and which are not.
Anti-Aging
Ageing well is not a question of individual products.
The most effective measures against premature skin ageing are unglamorous, inexpensive and have been established for decades. The most expensive ones usually are not. This section is ordered by evidence, not by price.
Fundamentals
Two kinds of ageing.
Skin ageing arises from two sources that differ fundamentally in how far they can be influenced.
01
Intrinsic ageing
The genetically determined, time-dependent component. Skin becomes thinner, collagen and elastin decline, regeneration slows. This part cannot be stopped — only accompanied.
02
Extrinsic ageing
The component caused by external influences, above all UV radiation, alongside smoking, lack of sleep, nutrition and environmental exposure. This part can be influenced — and accounts for a substantial share of visible ageing.
Measures
Ordered by evidence, not by price.
The resulting order regularly differs from the order suggested by advertising.
Consistent sun protection
The only measure with a demonstrated effect on the course of skin ageing itself. It works preventively, not retrospectively — and therefore all the more strongly the earlier it begins.
Level of evidence: Strong
Not smoking
Smoking measurably accelerates skin ageing and additionally impairs wound healing after aesthetic procedures.
Level of evidence: Strong
Topical retinoids
The best-studied ingredient with demonstrable effects on fine lines, pigmentation and skin appearance. It takes months, not weeks.
Level of evidence: Strong
Sleep and recovery
Chronic sleep deprivation has been associated with poorer skin barrier function and recovery. Studies exist but are predominantly observational.
Level of evidence: Moderate
Nutrition
A balanced diet supports skin health. Evidence for individual miracle foods or special anti-wrinkle diets is absent.
Level of evidence: Moderate
Aesthetic treatments
These can soften visible signs of ageing. They do not, however, slow the underlying process — they change the result, not the course.
Level of evidence: Moderate
Supplements
Collagen peptides and similar preparations show at best small effects in studies, usually with substantial methodological limitations and frequent industry funding.
Level of evidence: Limited
This rating is a deliberately simplified orientation. It describes how robust the published evidence is for the main indication — not how well a treatment will work in an individual case. Details are given in the corresponding article.
The inconvenient order
The most effective is rarely the most expensive.
Sun protection, not smoking and a retinoid together cost less than a single treatment session — and have considerably better evidence behind them. Aesthetic treatments can sensibly build on this foundation. They do not replace it, however well they are marketed.
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Medical disclaimer
The information on this website is provided for general medical education and does not replace individual medical examination, diagnosis or treatment. It does not constitute a treatment recommendation for any individual case. If you have health concerns, or before undergoing any treatment, please consult a physician.
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