Evidence reviewed: October 2026
Daily sunscreen prevents premature skin ageing — and may even reverse wrinkles.
Regular sunscreen use helps prevent additional UV-related ageing. That does not mean it stops all ageing or reliably erases wrinkles that are already there.
Why has this claim become popular?
Sunscreen has moved from holiday essential to daily skincare staple. The strongest version of the claim is sensible: reducing repeated ultraviolet exposure should reduce the damage that accumulates in skin. The leap from prevention to rejuvenation needs separate evidence.
What does the scientific research show?
A landmark randomised trial measured ageing over years
Hughes and colleagues followed 903 Australian adults younger than 55 for 4.5 years. Participants were allocated to daily or discretionary sunscreen use. Assessors, unaware of allocation, graded skin-surface impressions from the back of the hand. The daily-use group had lower odds of an increase in ageing score: relative odds 0.76, with a 95% confidence interval of 0.59–0.98.
This is often translated into ‘24% less ageing’, but it is not a measurement of 24% fewer facial wrinkles. It is a relative comparison on a particular grading scale. The daily group showed no detectable increase on that measure.
Smaller studies support protection, with important limits
Boyd and colleagues compared daily UVA/UVB sunscreen with its vehicle in 46 people over two years. Skin biopsies showed a difference in solar elastosis, the abnormal elastic tissue associated with sun damage, while several other features were largely unchanged. This supports a biological effect; it does not establish that every visible sign of ageing reverses. A 2016 study followed 32 people using facial SPF 30 for one year.
Texture and pigmentation measures improved, but there was no untreated comparison group. Its industry affiliation and uncontrolled design make causal claims about wrinkle reversal especially uncertain.
Limitations and uncertainty
The largest trial took place in sunny Australia and assessed the hand, not every facial feature or every skin type. Missing outcome data and a limited number of long-term randomised studies constrain precision. Nevertheless, random allocation, blinded assessment, a multiyear outcome and supporting skin research give convincing support for prevention of further photoageing. Sunscreen cannot prevent the intrinsic ageing process, and SPF describes UVB protection rather than the whole UVA story.
Results also depend on coverage and reapplication.
What does this mean for you?
Choose a broad-spectrum product you can use consistently. NHS advice recommends at least SPF 30 and good UVA protection, alongside shade and clothing; reapply during exposure, particularly after swimming or sweating. Sunscreen is not permission to stay out longer. Daily application is particularly relevant to exposed skin when UV exposure is expected. Irritation or allergy can occur, so a different formulation may suit sensitive skin.
Suspicious or changing skin lesions need assessment rather than cosmetic treatment.
Claims about alternatives also need direct evidence. Our review of astaxanthin and UV protection explains why a supplement should not be assumed to replace sunscreen.
The Evidence vs Hype verdict
Daily sunscreen earns its place as prevention. The evidence is substantially stronger for limiting new sun damage than for turning back existing wrinkles.
Research & Sources
References were checked against journal, review, guideline or indexed research records. Where only an abstract was available, this review does not imply a full-text assessment.
- Hughes MCB et al. (2013). Sunscreen and prevention of skin aging: a randomized trial. Annals of Internal Medicine. Original source ↗
- Boyd AS et al. (1995). The effects of chronic sunscreen use on the histologic changes of dermatoheliosis. Journal of the American Academy of Dermatology. Original source ↗
- Randhawa M et al. (2016). Daily Use of a Facial Broad Spectrum Sunscreen Over One-Year Significantly Improves Clinical Evaluation of Photoaging. Dermatologic Surgery. Original source ↗
- NHS. Sunscreen and sun safety. Original source ↗