Exercise changes skin measurably: a review published in JMIR Dermatology in 2024 concluded that a bout of exercise augments total cutaneous blood perfusion roughly eightfold, and regular training is associated with mitigated age-related skin change, while a study in Aging Cell identified interleukin-15 as one mechanism.
What happens to skin during a workout?
Blood flow increases dramatically. Per the JMIR Dermatology review, which synthesized literature published between 2000 and 2022, vasodilation during exercise demonstrates an enhancement of approximately 1.5-fold, and total cutaneous blood perfusion rises roughly eightfold. That surge is the body's cooling system at work, and it is the most immediate, well-documented skin effect of a workout.
The review also connects regular exercise habits to slower structural change. Its authors note that regular exercise can mitigate age-related skin changes, possibly by promoting mitochondrial biosynthesis, the process by which cells build new mitochondria. They frame this as promising rather than settled, writing that further research is needed to understand the effects of different amounts and content of exercise on the skin.
Could exercise affect skin aging?
There is mechanistic evidence, mostly from 2015. A study published in Aging Cell demonstrated that endurance exercise attenuates age-associated changes to skin in humans and mice, and identified exercise-induced interleukin-15 as a novel regulator of mitochondrial function in aging skin. The researchers showed that exercise controls IL-15 expression in part through skeletal muscle AMP-activated protein kinase, a central regulator of metabolism, and that eliminating muscle AMPK caused deterioration of skin structure in the animal model.
Two cautions belong next to those findings. First, the IL-15 work is a mechanism study, with human observations and mouse experiments, not a clinical trial of an intervention a reader can buy. Second, its authors frame daily low-dose IL-15 therapy as a possible future strategy, not a present option. What a reader can act on today is the consistent association between regular training and skin function in the review literature.
Are there skin downsides to exercise?
Yes, and the review names them. The JMIR Dermatology authors point out that not all exercise impacts are positive; for instance, swimming in chlorinated pools may harm the skin barrier function. They advise that the exercise environment should be considered for its potential effects on the skin.
The review also situates exercise inside a wider lifestyle picture: smoking increases the risk of wrinkles, excessive fat and sugar intake contributes to skin aging, and lack of sleep and stress are dangerous for the skin's barrier function. Exercise is one lever among several, not a stand-alone defense against sun damage, which the authors describe as extremely damaging to skin function. Daily sunscreen remains the intervention with the deepest evidence base in dermatology.
How much exercise is the research talking about?
The honest answer is that dose is not yet established. The JMIR Dermatology review explicitly flags that further research is needed to understand how different amounts and content of exercise affect skin. What the reviewed literature supports is regularity rather than intensity: the associations with improved skin moisture, structure and blood flow concern exercise habits over time, not single heroic sessions.
What about sweat, chlorine and workout skincare?
The same review's caveats deserve a routine response. For chlorinated pool water, which the authors flag as a potential harm to barrier function, the practical countermeasures are unglamorous: rinse before and after swimming where possible, and lean on a leave-on moisturizer afterward, consistent with the review's positioning of topical barrier care. For sweat, the skin's own cooling process, the guidance that follows from dermatology bodies is to cleanse when practical rather than let it sit with occlusive makeup on top.
None of this requires specialized workout skincare. The review's framing keeps returning to ordinary variables: circulation from movement, damage from sun, barrier stress from chlorine, sleep and stress. Products marketed specifically as post-exercise skin care did not appear as an evidence category in the reviewed literature, which is itself a useful data point for a reader weighing a purchase.
| Finding | Source | Certainty |
|---|---|---|
| Cutaneous blood perfusion rises ~8-fold during exercise | JMIR Dermatology review, 2024 | Consistent across reviewed studies |
| Regular exercise may mitigate age-related skin change | JMIR Dermatology review, 2024 | Association, mechanism proposed |
| Exercise-induced IL-15 regulates mitochondrial function in aging skin | Aging Cell, 2015 | Human and animal mechanism study |
| Chlorinated pool water may harm barrier function | JMIR Dermatology review, 2024 | Flagged as a caveat |
What the evidence does not show is exercise erasing wrinkles, replacing sunscreen, or working as a treatment for any skin condition. The claim the studies support is narrower and still worth having: moving regularly appears to support the skin's circulation and structure, as one part of a lifestyle that also includes sun protection, sleep and not smoking.
This article is for informational purposes only and is not medical advice. Before starting or changing an exercise program, or for any skin concern, consult a dermatologist or qualified healthcare professional.
