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A Dermatologist Shares the Ideal SPF to Use This Summer

A Dermatologist Shares the Ideal SPF to Use This Summer

CNET02-07-2025
4th of July party preparation is in full swing. I'm sure by now you are checking to make sure you have everything on your list: ice, drinks, hot dogs, plates and napkins. But there is one product you may be forgetting that is essential for your health -- sunscreen. Especially during the summer months, sunscreen is crucial to protect your skin from the sun's UV rays, which can lead to skin cancer and premature aging. But with so many different SPF numbers out there, it can be difficult to know which one to choose. We asked a dermatologist, so you don't have to.
What is SPF?
SPF, or sun protection factor, describes the amount of solar energy needed to produce a sunburn on protected skin relative to unprotected skin, according to the US Food and Drug Administration. Logic would follow, then, that wearing a higher SPF would offer you better protection when you're out and about, basking in the sun's rays.
Is a higher SPF better?
Is higher SPF sunscreen more protective in a measurable way that actually matters? The tested difference between SPF 30 and SPF 50 is small, according to Dr. Steven Daveluy, board-certified dermatologist and program director at Wayne State University Department of Dermatology. There was a difference of 96.7% blocking vs. 98% blocking, in one example he provided. Research on people wearing sunscreen out in "real life" has suggested higher SPFs are more protective, Daveluy said in an email.
Combine this with the fact you're probably not wearing enough sunscreen -- studies have shown people apply only 25% to 50% of the amount that they should, Daveluy said -- and a higher SPF may come out reasonably more protective.
"You should use about 1 ounce of sunscreen to cover your head, neck, arms and legs when wearing shorts and a T-shirt," Daveluy recommended, adding that people without hair should use a little more.
"That means your 3-ounce tube of sunscreen is only three applications," Daveluy said. "Most people are not using that amount."
What is the minimum SPF you need in a sunscreen?
The American Academy of Dermatology Association recommends your sunscreen be SPF 30 or higher. It also recommends you look for sunscreen that has broad-spectrum protection (it protects against UVA and UVB rays) and make sure it's water-resistant.
"If you follow the recommendations for the proper amount of sunscreen, then SPF 30 is great," Daveluy said. If you think you're skimping on the layers, though, a higher SPF could offer more benefit. He added that he generally recommends looking for at least SPF 50 or 60.
Does skin tone matter when choosing an SPF?
People with darker skin tones have more melanin, which does offer some protection from the sun's damaging rays. For this reason, skin cancer rates in people of color are lower than rates in white people, but the risk isn't zero. Research also suggests that people of color may be more likely to experience a missed or late diagnosis of skin cancer, making outcomes more dangerous. (It's also important to note that melanoma can have other causes besides exposure to sunlight or UV rays, and can show up in areas not typically exposed to sun.)
"SPF 30 is the minimum for everyone," Daveluy said. He added that tinted sunscreens may be a better fit for darker skin tones, leaving less of a white cast.
"If you have very fair skin, the higher [SPF] numbers may be a good idea, especially if you aren't using the proper amount, because you will see the consequences of underuse more easily," Daveluy said.
Sunscreen red flags
As long as you're wearing a minimum of SPF 30, applying it properly and also looking for products that are broad spectrum and water resistant, you've got the basics down. Daveluy added that for people with sensitive skin, finding a mineral sunscreen with "active ingredients of zinc and/or titanium" may be a good choice.
Daveluy pointed out other measures of protecting yourself from the sun, including wearing a wide-brimmed hat, sun-protective clothing and hanging out in the shade when possible. But don't forget that sunscreen has a proven safety record going back for decades, he said.
"The biggest red flags for sunscreen are any people or reports that try to tell you sunscreen isn't safe," Daveluy said.
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How running for 75 minutes a week could help you live longer — and feel younger
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Eating More of This Vegetable Might Be the Easiest Way To Lower Hypertension originally appeared on Parade. When you think of cardiovascular health issues, your mind may drift to hospitals, life-saving visits to the emergency room and medications. Hospitals and medications can save lives and help people manage their heart health. However, other habits can also play a significant role in supporting your overall health, including lowering blood want people to understand that small, healthy choices add up. A recent American Heart Association report found that cardiovascular disease remains the top killer of U.S. adults. However, the organization highlighted the increase in people living with hypertension as a reason for this dubious distinction. Diet is one risk factor for high blood pressure—and heart disease in general—that people have control over. 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"Potassium is a mineral that helps balance sodium levels in the body by helping relax blood vessel walls," explains , a registered dietitian with Top Nutrition Coaching. "This can help ease pressure on the cardiovascular system."A 2023 Nutrients study suggested that eating leafy green vegetables, including spinach, may help people lower their blood pressure. Importantly, spinach isn't the only leafy green vegetable in the produce aisle, nor is it such a superfood that eating it will guarantee that your blood pressure lowers and stays in a healthy range. One cardiology dietitian stresses that no food belongs on that kind of lofty pedestal. "No single food can improve blood pressure on its own," reports Michelle Routhenstein, MS, RD, CDCES, CDN, a cardiology dietitian and owner of "Instead, considering your overall dietary pattern, and the foods and pairings you include, is essential for supporting blood pressure and heart health."However, Routhenstein agrees with Dr. Chen and Garcia-Benson—the nitrate and potassium content in spinach provides a double whammy that makes it an excellent choice for people aiming to keep their blood pressure in How Much Spinach Do You Need To Eat To Lower Blood Pressure? There isn't a specific dosage of spinach to eat if you want to lower blood pressure, explains Dr. Nishant Kalra, MD, an interventional cardiologist and regional chief medical officer at VitalSolution, an Ingenovis Health company. However, Dr. Kalra points to data suggesting that consuming about 350 to 400 milligrams of nitrate can benefit the heart."This aligns with the DASH diet, which recommends at least four servings of vegetables per day," Dr. Kalra explains. If adding milligrams of nitrates sounds too stressful, Routhenstein has a way to simplify your spinach intake. "Consuming about one to two cups of raw spinach or a half or full cup of cooked spinach four to five times a week can help you reap these benefits," she loves working spinach into soups, sandwiches and salads with tomatoes. Garcia-Benson enjoys spinach: Tossed into burrito bowls Sautéed with eggs, mushrooms and other veggies in the morning Blended into smoothies ("You won't taste it!" she reveals.) Related: Alternatives to Spinach That Can Lower Blood Pressure If hiding spinach in your smoothie doesn't sound appetizing, rest assured, there are other ways to get your fix of heart-healthy veggies. In the leafy-green family, Garcia-Benson reports that: Kale is nutrient-dense and easy to use, cooked or raw Swiss chard is packed with potassium and magnesium Arugula is mild and nitrate-rich like spinach "It's not just about spinach—getting vegetables in daily, ideally with most meals, is supportive of healthy blood pressure levels," Garcia-Benson says. "If you want to use spinach every day, go for it. However, rotating your greens week to week can help reduce food waste and keep things interesting."Speaking of which, variety is more than the spice of life. Eating an array of colorful foods (AKA the rainbow) is also vital to ensuring that you're getting the vitamins and minerals your heart needs to thrive. She also recommends: Beets, which are also high in nitrates, can help relax blood vessels and boost circulation Sweet potatoes are rich in potassium, fiber and magnesium, balancing fluids and sodium Avocados, which are packed with potassium, magnesium and heart-health fats that assist with blood pressure regulation Strawberries and blueberries that are loaded with antioxidants, reducing inflammation and supporting blood pressure function Bananas—OK, maybe don't move over just yet. "These are one of the most potassium-rich fruits, supporting sodium regulation and healthy hearts," Garcia-Benson says. Garcia-Benson isn't a fan of "eat this, not that" advice, even when it comes to blood pressure. "Rather than focusing on restriction, I encourage people to prioritize adding nutrient-dense foods to their plate," she says. "That naturally pushes out some of the higher-sodium, added-sugar, or high-saturated-fat foods without being overly rigid. Still, she concedes it's important to be mindful of a few components when choosing meals, including limiting: Highly processed foods Fried foods Sugary drinks and sweets Cured meats and snack foods that can add sneaky high amounts of salt Related: Other Tips To Support Blood Pressure Diet is a critical way to lower blood pressure and prevent hypertension. However, cardiologists recommend taking a holistic approach. Dr. Chen suggests: Engaging in regular physical activity Maintaining a healthy weight Avoiding alcohol and tobacco Getting enough quality sleep Managing stress That advice might sound simple, but managing blood pressure can feel complicated. Remember, support is available. "If you're concerned about high blood a primary care provider or cardiologist for evaluation and management," shares Dr. Kalra. A registered dietitian can also help you craft a heart-healthy diet—including dishing out delicious ways to enjoy spinach and other vegetables. Up Next:Sources: Heart and Stroke Statistics. American Heart Association. Dr. Cheng-Han Chen, MD, a board-certified interventional cardiologist and medical director of the Structural Heart Program at MemorialCare Saddleback Medical Center Kathleen Garcia-Benson, RDN, a registered dietitian with Top Nutrition Coaching Vitamins and Minerals for Blood Pressure Reduction in the General, Normotensive Population: A Systematic Review and Meta-Analysis of Six Supplements. Nutrients. Michelle Routhenstein, MS, RD, CDCES, CDN, a cardiology dietitian and owner of Dr. Nishant Kalra, MD, an interventional cardiologist and regional chief medical officer at VitalSolution, an Ingenovis Health company Increasing Nitrate-Rich Vegetable Intake Lowers Ambulatory Blood Pressure in (pre)Hypertensive Middle-Aged and Older Adults: A 12-Wk Randomized Controlled Trial. The Journal of Nutrition. Eating More of This Vegetable Might Be the Easiest Way To Lower Hypertension first appeared on Parade on Jul 26, 2025 This story was originally reported by Parade on Jul 26, 2025, where it first appeared.

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