Not all skin aging works the same way. Death, taxes, and aging, none of them are negotiable. But exactly when and how skin aging shows up on any given person can vary widely, and that variation is no accident.
One person might develop persistent dark spots after years of sun exposure, while another notices crow’s feet that look nearly identical to those on a parent’s face. According to dermatologists, these differences come down to which type of aging is driving the changes. Broadly speaking, the causes of skin aging fall into two categories: extrinsic and intrinsic.
Extrinsic aging is shaped by external factors things like sun exposure, smoking, pollution, and skincare habits many of which are within a person’s control. Intrinsic aging, on the other hand, refers to the natural biological process driven largely by genetics, which unfolds regardless of lifestyle choices.
Understanding which type is affecting your skin can help guide smarter decisions from which ingredients to prioritize to when it might be worth exploring in-office treatments. And while stopping the clock entirely is not an option, slowing it down with the right approach very much is.
How to slow extrinsic aging
Extrinsic aging tends to show up unevenly. Environmental stressors create oxidative stress, DNA damage, and collagen breakdown in irregular patterns, which can translate into sunspots, deep wrinkles concentrated on sun exposed areas like the face, neck, and backs of the hands, and pores that appear larger due to thinning skin while areas typically covered by clothing remain comparatively smooth.
Here are 5 key steps to counter it.
Wear sunscreen every single day. Ultraviolet radiation damages DNA in skin cells and breaks down collagen and elastin, the proteins responsible for keeping skin firm and supple. Research suggests sun exposure may account for up to 80% of visible skin aging. Dermatologists recommend a broad-spectrum SPF 30 or higher, applied daily regardless of weather or season and extended to the neck, chest, and hands, not just the face.
Add an antioxidant serum. Applied before sunscreen, a topical antioxidant provides an extra layer of defense against environmental damage. Vitamin C is a particularly well-researched option, known to stimulate collagen production, brighten uneven skin tone, and neutralize the unstable molecules responsible for oxidative stress. Look for packaging that is opaque and airtight, as vitamin C degrades quickly when exposed to air and light.
Prioritize your moisturizer. The skin barrier, the outermost layer of skin keeps irritants out and hydration in. When it is compromised, the result can be dryness, dullness, and accelerated fine lines. Moisturizers formulated with ceramides, squalane, and fatty acids like linoleic acid are best suited to repairing and maintaining barrier function. Applying moisturizer twice in the evening, once after getting home and again before bed, can be especially beneficial, as the skin’s repair mechanisms are most active overnight.
Consider regenerative in-office treatments. Topical products have limits, and targeted procedures can pick up where they leave off. Biostimulatory fillers such as Sculptra and Radiesse are FDA approved options that prompt the body to rebuild its own collagen and elastin rather than simply masking signs of aging. Microneedling, radiofrequency microneedling, and monopolar radiofrequency treatments work along similar principles stimulating regeneration from within rather than applying a surface-level fix.
Add resistance training to your routine. Exercise has long been linked to better heart health, reduced disease risk, and greater longevity but its benefits for the skin are less often discussed. Research, including a small 2023 randomized controlled trial involving 56 participants, found that 16 weeks of resistance training may reduce visible signs of skin aging, likely by stimulating collagen production and reducing inflammation. Anything from weightlifting to mat Pilates counts.
How to slow intrinsic aging
Eat an anti-inflammatory diet. What goes into the body has a direct effect on how skin ages. Diets high in sugar trigger the formation of compounds that accumulate on collagen and elastin, reducing the skin’s ability to stay smooth and resilient. High fat, inflammatory diets are linked to slower wound healing and greater oxidative stress. Foods rich in vitamin C, omega-3 fatty acids, and adequate protein think salmon, leafy greens, roasted vegetables, and legumes help maintain the building blocks the skin needs to stay firm and healthy.
Monitor your hormones. Declining estrogen levels during menopause can lead to thinner, drier skin with reduced elasticity. Regular comprehensive bloodwork with a trusted physician can help identify hormonal shifts early, opening the door to targeted support such as hormone replacement therapy, vitamin D supplementation, or tailored dietary changes rather than relying on guesswork.
Protect your circadian rhythm. The body’s internal 24-hour clock governs skin cell repair and renewal. When it is disrupted by irregular sleep, late-night screen exposure, or stress, cortisol levels rise and elevated cortisol has been shown to reduce skin elasticity, deplete moisture, and accelerate wrinkling. One of the most accessible ways to reset this rhythm is morning sunlight exposure, which signals to the brain that the day has begun, helps regulate cortisol, and can calm systemic inflammation. Even 10 to 15 minutes outside in the morning also supports adequate vitamin D levels.
Avoid smoking in any form. Research has found that frequent smokers in their 40s can show skin characteristics more typical of non-smokers in their 70s. Tobacco smoke impairs collagen production, promotes enzymes that break collagen down, damages the skin barrier, and restricts blood flow to skin cells. These effects are not limited to cigarettes electronic cigarettes have been shown to slow wound healing, increase inflammation, and worsen conditions like eczema, while some research links smoking marijuana to accelerated aging as well.
1Invest in meaningful social connection. Chronic loneliness is a known driver of elevated cortisol and systemic inflammation, both of which accelerate intrinsic aging. Spending time with close friends and family has been shown to counteract those effects preserving collagen, supporting the skin barrier, and, according to some research, even reducing the biological age of cells. It may be the most enjoyable item on this list, and the science behind it is legitimate.
