8 Best Vitamins and Supplements for Dry Skin
Depending on the cause of your dry skin, different treatment methods, including medicated ointments and moisturizers, may be used to increase skin hydration.
Additionally, lifestyle modifications, such as drinking more water and taking certain supplements, may improve skin dryness.
Here are 8 vitamins and supplements for dry skin.
1. Vitamin D
Vitamin D is a fat-soluble vitamin that's critical for many aspects of health, including the health of your skin.
Keratinocytes are skin cells that make up the majority of the outer layer of your skin, known as the epidermis.
What's more, research has indicated a correlation between vitamin D and skin moisture.
A study in 83 women found that those who had low vitamin D levels had lower average skin moisture than participants who had normal vitamin D levels, and that as blood levels of vitamin D increased, skin moisture content increased as well.
Another small 12-week study in 50 women observed that daily treatment with a nutritional supplement containing 600 IU of vitamin D led to significant improvements in skin hydration.
However, the supplement contained a combination of nutrients, so it's unclear whether treatment with vitamin D alone would have resulted in the same positive outcome.
A large percentage of the population is deficient in vitamin D, and given that the nutrient is essential for skin hydration, supplementing with it may help combat dry skin.
Vitamin D supplements are widely available in stores and online.
Be sure to discuss their use with your healthcare provider first and look for products that have been third-party tested to ensure the highest quality.
Research shows that low levels of vitamin D may increase the chances of dry skin. Therefore, supplementing with this nutrient may help increase skin hydration.
Collagen is the most abundant protein in your body and accounts for 75% of your skin's dry weight.
Some research has shown that taking collagen-based supplements may have a range of benefits for your skin, including decreasing wrinkle depth and increasing skin hydration.
A study in 69 women found that participants who consumed 2.5–5 grams of collagen per day for 8 weeks had significant improvements in skin elasticity and also experienced increased skin hydration, compared with a placebo group.
Another 12-week study in 72 women noted that taking a supplement that contained 2.5 grams of collagen peptides along with a blend of other ingredients like vitamin C and zinc significantly improved skin hydration and roughness, compared with a placebo group.
However, the supplement contained other nutrients, so it's unknown whether collagen alone would have had the same effects.
Plus, the study was funded by the supplement manufacturer which may have affected the study results.
If you want to try a collagen supplement to help with your dry skin, speak with your healthcare provider before purchasing a third-party certified product locally or online.
A good amount of evidence supports the use of collagen supplements for increasing skin hydration and treating dry skin.
3. Vitamin C
In fact, the skin contains very high levels of vitamin C, with some research finding a concentration of up to 64 mg of vitamin C per 100 grams of the epidermal skin layer.
Unsurprisingly, studies have shown that increasing dietary vitamin C through vitamin C supplements may improve many factors of skin health, including skin hydration.
Plus, some studies have shown that when used in combination with other nutrients, vitamin C may help enhance skin moisture.
For example, a 6-month study in 47 men demonstrated that taking a supplement that contained 54 mg of vitamin C, as well as marine protein and a combination of other nutrients, significantly improved skin hydration, compared with a placebo group.
Other studies in women have shown similar results.
A study in 152 women found that participants who took a supplement that contained 54 mg of vitamin C, as well as zinc and marine protein, had significantly reduced skin roughness, compared with a placebo group.
However, in most of the available research on vitamin C's effect on dry skin, vitamin C is combined with other nutrients, making it impossible to tell whether the nutrient would have the same effect if it was used on its own.
Plus, many of the studies were sponsored by the pharmaceutical companies that manufactured the product being evaluated, which may have affected study results.
Regardless, based on the most current research, supplementing with vitamin C may improve overall skin health and help combat dry skin.
As with any new supplement, you should speak with a healthcare professional before adding a vitamin C supplement to your diet. These products are widely available in stores and online.
Vitamin C is an integral nutrient for skin health. Consuming supplemental vitamin C may improve dry skin, according to some studies. However, more research on its effects on dry skin is needed.
4. Fish Oil
Fish oil is well known for its skin-health-promoting properties.
It contains docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), two essential fatty acids that have powerful anti-inflammatory and healing properties and have been shown to benefit the skin in many ways.
Dietary supplements with fish oil may help boost skin hydration and improve the fatty acid barrier of the skin, which helps maintain hydration.
A 90-day study in rats with acetone-induced dry skin found that high-dose oral fish oil supplements significantly increased skin hydration, reduced water loss, and resolved dryness-related skin itching, compared with rats that didn't receive the fish oil.
In fact, the study noted that the fish oil group had a 30% increase in skin hydration after 60 days of treatment.
Additionally, research indicates that daily treatment with doses of fish oil ranging from 1–14 grams of EPA and 0–9 grams DHA for 6 weeks to 6 months improved symptoms of psoriasis — a chronic, inflammatory skin disease — including scaling or dry, cracked skin.
Fish oil has also been shown to decrease skin inflammation and protect against sun damage, making it an all around skin-friendly supplement.
There are many great, third-party-certified fish oil products available in stores and online. Speak with your healthcare provider first to determine the best choice and dosage for your needs.
Fish oil may help improve skin hydration and decrease moisture loss. Plus, it has been shown to improve dry, scaling skin in those with psoriasis.
5–8. Other Supplements for Treating Dry Skin
In addition to the nutrients listed above, studies have shown that supplementing with several other compounds may be an effective way to improve skin moisture.
- Probiotics. A study found that supplementing both mice and humans with Lactobacillus plantarum bacteria improved skin barrier function and skin hydration after 8 weeks. However, more research is needed.
- Hyaluronic acid. Hyaluronic acid is often used topically to improve skin hydration, but recent research shows that ingesting this compound in combination with other nutrients may significantly increase skin hydration.
- Aloe vera. A study in 64 women found that supplementing with fatty acids derived from aloe vera for 12 weeks significantly improved skin moisture and skin elasticity, compared with a placebo.
- Ceramides. Ceramides are fat molecules that are important components of healthy skin. Some research has shown that supplementing with ceramides may increase skin hydration, which may help treat dry skin.
Some research suggests that the supplements listed above may help enhance skin moisture and treat dry skin.
However, more research is needed before these compounds can be recommended as effective ways to naturally relieve dry skin.
Supplementing with probiotics, hyaluronic acid, aloe vera extracts, and ceramides may improve dry skin, but more research is needed.
Although taking certain supplements may help improve dry skin, several other factors can contribute to skin dryness and should be considered.
For example, dehydration is a common cause of dry skin, so upping your water intake can be a healthy and easy way to improve skin hydration.
Following an unhealthy diet, having micronutrient deficiencies, and not eating enough may also cause or worsen dry skin.
Therefore, it's important to talk to your healthcare provider if you're experiencing significantly dry, irritated skin to rule out more serious health conditions.
Dry skin can be a sign of an underlying health condition, so it's important to contact your healthcare provider if you have unexplained, significantly dry skin.
The Bottom Line
Dry skin is a common condition that can be caused by a number of factors, such as dehydration, allergic reactions, and diseases like hypothyroidism.
Research has shown that taking certain vitamins and other nutritional supplements, including vitamin D, fish oil, collagen, and vitamin C, may help improve skin hydration and help keep your skin healthy and nourished.
However, although the supplements on this list may act as helpful tools for people who have dry skin, it's important to talk to your healthcare provider if you're experiencing unexplained, chronic dry skin, as this can be a sign of an underlying medical condition.
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Kevin T. Smiley
When hurricanes and other extreme storms unleash downpours like Tropical Storm Beta has been doing in the South, the floodwater doesn't always stay within the government's flood risk zones.
New research suggests that nearly twice as many properties are at risk from a 100-year flood today than the Federal Emergency Management Agency's flood maps indicate.
Flooding Outside the Zones<p>About <a href="https://furmancenter.org/files/Floodplain_PopulationBrief_12DEC2017.pdf" target="_blank">15 million</a> Americans live in FEMA's current 100-year flood zones. The designation warns them that their properties face a 1% risk of flooding in any given year. They must obtain flood insurance if they want a federally ensured loan – insurance that helps them recover from flooding.</p><p>In Greater Houston, however, <a href="https://doi.org/10.1111/j.1539-6924.2012.01840.x" target="_blank">47% of claims</a> made to FEMA across three decades before Hurricane Harvey were outside of the 100-year flood zones. Harris County, recognizing that FEMA flood maps don't capture the full risk, now <a href="https://www.hcfcd.org/floodinsurance" target="_blank" rel="noopener noreferrer">recommends that every household</a> in Houston and the rest of the county have flood insurance.</p><p>New risk models point to a similar conclusion: Flood risk in these areas outstrips expectations in the current FEMA flood maps.</p><p>One of those models, from the <a href="https://firststreet.org/flood-lab/research/2020-national-flood-risk-assessment-highlights/" target="_blank">First Street Foundation</a>, estimates that the number of properties at risk in a 100-year storm is 1.7 times higher than the FEMA maps suggest. Other <a href="https://doi.org/10.1088/1748-9326/aaac65" target="_blank" rel="noopener noreferrer">researchers</a> find an even higher margin, with 2.6 to 3.1 times more people exposed to serious flooding in a 100-year storm than FEMA estimates.</p>
What FEMA’s Flood Maps Miss<p>Understanding why areas outside the 100-year flood zones are flooding more often than the FEMA maps suggest involves larger social and environmental issues. Three reasons stand out.</p><p>First, some places rely on relatively old FEMA maps that don't account for recent urbanization.</p><p>Urbanization matters because impervious surfaces – think pavement and buildings – are not effective sponges like natural landscapes can be. Moreover, the process for updating floodplain maps is locally variable and can take years to complete. Famously, New York City was updating its maps when Hurricane Sandy hit in 2012 but hadn't finished, meaning flood maps in effect <a href="https://projects.propublica.org/nyc-flood/" target="_blank">were from 1983</a>. FEMA is required to assess whether updates are needed every five years, but the <a href="https://www.fema.gov/cis/nation.html" target="_blank" rel="noopener noreferrer">majority of maps</a> <a href="https://www.oig.dhs.gov/sites/default/files/assets/2017/OIG-17-110-Sep17.pdf" target="_blank" rel="noopener noreferrer">are older</a>.</p><p>Second, binary thinking can lead people to an underaccounting of risk, and that can mean communities fail to take steps that could protect a neighborhood from flooding. The logic goes: if I'm not in the 100-year floodplain, then I'm not at risk. Risk perception <a href="https://doi.org/10.1088/1748-9326/ab195a" target="_blank" rel="noopener noreferrer">research</a> backs this up. FEMA-delineated flood zones are the major factor shaping flood mitigation behaviors.</p><p>Third, the era of climate change scuttles conventional assumptions.</p><p>As the planet warms, extreme storms are becoming <a href="https://nca2018.globalchange.gov/" target="_blank">more common and severe</a>. If greenhouse gas emissions continue to increase at a high rate, computer models suggest that the chances of a severe storm dropping 20 inches of rain on Texas in any given year will increase from about 1% at the end of the last century to 18% at the end of this one, a chance of <a href="https://doi.org/10.1073/pnas.1716222114" target="_blank" rel="noopener noreferrer">once every 5.5 years</a>. So far, <a href="https://www.rstreet.org/wp-content/uploads/2020/02/195.pdf" target="_blank" rel="noopener noreferrer">FEMA hasn't taken into account the impact climate change is having</a> on extreme weather and sea level rise.</p>
Racial Disparities in Flooding Outside the Zones<p>So, who is at risk?</p><p>Years of research and evidence from storms have highlighted social inequalities in areas with a high risk of flooding. But most local governments have less understanding of the social and demographic composition of communities that experience flood impacts outside of flood zones.</p><p>In analyzing the damage from Hurricane Harvey in the Houston area, I found that <a href="https://doi.org/10.1088/1748-9326/aba0fe" target="_blank">Black and Hispanic residents disproportionately experienced flooding</a> in areas beyond FEMA's 100-year flood zones.</p><p>With the majority of flooding from Hurricane Harvey occurring outside of 100-year flood zones, this meant that the overall impact of Harvey was racially unequal too.</p><p>Research into where flooding occurs in Baltimore, Chicago and Phoenix points to some of the potential causes. <a href="https://www.nap.edu/read/25381/chapter/4#16" target="_blank" rel="noopener noreferrer">In Baltimore and Chicago</a>, for example, aging storm and sewer infrastructure, poor construction and insufficient efforts to mitigate flooding are part of the flooding problem in some predominantly Black neighborhoods.</p>
What Can Be Done About It<p>Better accounting for those three reasons could substantively improve risk assessments and help cities prioritize infrastructure improvements and flood mitigation projects in these at-risk neighborhoods.</p><p>For example, First Street Foundation's risk maps account for <a href="https://firststreet.org/flood-lab/research/flood-model-methodology_overview/" target="_blank">climate change</a> and present <a href="https://floodfactor.com/" target="_blank" rel="noopener noreferrer">ratings</a> on a scale from 1 to 10. FEMA, which works with communities to update flood maps, is <a href="https://www.fema.gov/media-library-data/1521054297905-ca85d066dddb84c975b165db653c9049/TMAC_2017_Annual_Report_Final508(v8)_03-12-2018.pdf" target="_blank" rel="noopener noreferrer">exploring rating systems</a>. And the National Academies of Sciences, Engineering and Medicine recently <a href="https://www.nationalacademies.org/news/2019/03/new-report-calls-for-different-approaches-to-predict-and-understand-urban-flooding" target="_blank" rel="noopener noreferrer">called for a new generation of flood maps</a> that takes climate change into account.</p><p>Including recent urbanization in those assessments will matter too, especially in fast-growing cities like Houston, where <a href="https://authors.elsevier.com/a/1boBRyDvMFW6W" target="_blank" rel="noopener noreferrer">386 new square miles</a> of impervious surfaces were created in the last 20 years. That's greater than the land area of New York City. New construction in one area can also <a href="https://scalawagmagazine.org/2018/01/city-in-a-swamp-as-houston-booms-its-flood-problems-are-only-getting-worse/" target="_blank" rel="noopener noreferrer">impact older neighborhoods downhill</a> during a flood, as some Houston communities discovered in Hurricane Harvey.</p><p>Improving risk assessments is needed not just to better prepare communities for major flood events, but also to prevent racial inequalities – in housing and beyond – from <a href="https://www.npr.org/2019/03/05/688786177/how-federal-disaster-money-favors-the-rich" target="_blank" rel="noopener noreferrer">growing</a> after the unequal impacts of disasters.</p>
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