Latest news with #DendyEngelman
New York Post
6 days ago
- Health
- New York Post
Dermatologist reveals ‘biggest blind spot' people have about skin care: ‘It really is the gold standard in anti-aging'
Is your 10-step skincare regimen all style and no substance? 'I'm always a little surprised at how many people will invest in high-end treatments or complex routines, but skip the fundamentals,' Dr. Dendy Engelman, a board certified dermatologist at Shafer Clinic Fifth Avenue, told The Post. Engelman often sees three glaring skincare slip-ups — including one simple mistake that could be quietly sabotaging your pricey products. Here's how to avoid them. 4 Dr. Dendy Engelman is based in New York City. Tamara Beckwith #1. Retinol regret 'One of the biggest blind spots I see is retinol,' Engelman said. Retinol — the milder, over-the-counter cousin of prescription-strength retinoids — is a vitamin A-derived powerhouse that tackles everything from fine lines to acne. 'It's a cornerstone for increasing cell turnover, smoothing texture, improving pigmentation and stimulating collagen,' Engelman explained. 'It really is the gold standard in anti-aging.' Still, most people aren't using it. Studies show only about a quarter of American women and one in ten US men include retinol in their skincare routines. 'It's one of the most well-studied ingredients we have in dermatology, and yet people are still hesitant, either because they've had one bad experience or because they're worried about irritation,' Engelman said. 'The truth is, there are so many elegant, buffered formulations now that make retinol incredibly accessible, even for sensitive skin,' she added. While retinol can cause irritation like redness, itchiness and peeling, simple steps can help minimize these side effects. 4 Retinol is a common ingredient added to skin creams, lotions and serums. zigres – If you're just starting out, try using retinol every other or every third night and gradually working up to daily use, according to the Cleveland Clinic. Waiting about 30 minutes after washing your face before applying retinol can reduce irritation. For sensitive skin, applying moisturizer first can also help by creating a protective buffer that can prevent discomfort. #2. Exfoliation overload 'People love that fresh, squeaky-clean feeling, but more isn't always better,' Engelman said. Your skin naturally sheds dead cells every 30 days, but when those cells don't fully slough off, it can lead to problems like dryness, clogged pores and hyperpigmentation. Exfoliating — whether with chemicals, scrubs or tools — helps clear the buildup, revealing a brighter, smoother complexion. Over time, exfoliating can even boost the production of collagen, the protein that keeps skin firm, elastic, and wrinkle-free. But going overboard can backfire. 4 Before exfoliating, make sure to wash your face with a gentle cleaner. Svitlana – 'I see a lot of patients with compromised skin barriers because they're using too many acids, too frequently, or layering physical and chemical exfoliants without realizing the cumulative effect,' Engelman said. The result? Inflamed, reactive skin that's more prone to breakouts and dullness. 'Exfoliation should be thoughtful, not aggressive,' Engelman warned. 'It's about supporting the skin, not scrubbing it into submission.' For oily or normal skin, experts generally recommend exfoliating 2-3 times a week. If your skin is dry or sensitive, you may only need to do it once per week. 4 While skipping washing your face one night probably won't cause lasting damage, consistently neglecting this step can harm your skin's health and appearance. Salute Studios – #3. Clueless cleansing In surveys, a staggering 80% of Americans admit to making at least one mistake when cleansing their face — including half of men and women who regularly skip washing before bedtime. 'It sounds so basic, but so many people do a quick once-over with a wipe or skip a proper cleanse altogether if they're tired,' Engelman said. Failing to wash your face, especially if you wear makeup, can lead to clogged pores, breakouts, dullness and premature aging over time. Experts recommend washing your face with a gentle cleanser in the morning and at night to remove sweat, oil, dirt and debris that build up throughout the day and while you're asleep. If you wear makeup or sunscreen, Engelman advises double cleansing at night. 'An oil-based cleanser first, then a gentle second cleanse to remove residue,' she said. 'It helps keep the skin clear, the barrier intact, and preps the skin to actually absorb your serums and treatments. Without that clean canvas, even the best products won't perform.' 'At the end of the day, I'd always rather see someone with a few consistent, thoughtful steps than a long, chaotic list of products that don't work well together,' Engelman said. 'Skin thrives on consistency, not overwhelm.'
Cosmopolitan
08-07-2025
- Health
- Cosmopolitan
8 Best French Pharmacy Prime Day Deals
Paris is always a good idea, especially if you want to buy some of the best skincare in the world. French pharmacy products— including face serums, moisturizers, healing ointments, and barrier repair creams—are coveted by makeup artists, models, influencers, dermatologists, and beauty editors like moi. But a trip to Paris isn't always realistic (especially in this economy), which is where good ol' Amazon comes into play. Amazon sells a shocking amount of French beauty staples, and a handful are on sale this week for Prime Day. Here's exactly what to stock up on while the discounts are steep (I've sourced recs from Cosmo beauty editors as well as two board-certified dermatologists, Shari Marchbein, MD, and Dendy Engelman, MD) if you want to glow like a Parisian.
Yahoo
02-07-2025
- Health
- Yahoo
How To Patch Test a New Skincare Product Correctly, According to Dermatologists
It's an all too common scenario: You're excited to try your new skincare product, whether it's an eye cream, serum, moisturizer, or body cream, and slather it all over, only to find yourself with a rash a few hours later. The reality is that skin reactions do happen, but there is an easy way to avoid them—patch testing. 'It's a good idea to patch test products when using them for the first time, especially if you have sensitive skin, to identify any adverse reactions before you apply the product to a larger area,' says Dendy Engelman, MD, FACMS, FAAD, board-certified cosmetic dermatologist and Mohs surgeon at the Shafer Clinic in New York City. 'It's a safer way to ensure a product is compatible with your skin before regular use.' Now you're probably wondering, what is patch testing exactly? To help break down the procedure, we turned to two dermatologists to get the scoop, including the best way to do it at home. Below, learn everything there is to know about patch testing. Dendy Engelman, MD, FACMS, FAAD, is a board-certified cosmetic dermatologist and Mohs surgeon at the Shafer Clinic in New York City. Kseniya Kobets, MD, is the Director of Dermatology at Montefiore Einstein Advanced Care.'Dermatologists or allergy doctors often use patch testing to determine if a specific ingredient or substance can be causing someone to have rashes or skin reactions from contact with the skin, skincare, or the environment,' says Kseniya Kobets, MD, Director of Dermatology at Montefiore Einstein Advanced Care. The test is applied in the office and includes a series of 'patches' of concentrated allergens that come into direct contact with the skin. This is typically applied as a bandage with six to twelve patches per strip. "It's checked over a few days to a week to check for a reaction or delayed reaction on your skin after exposure to common and reported allergens," explains Dr. Kobets. While the in-office treatment is recommended by experts, you can also try to patch test at home. According to Dr. Kobets, you should apply a small amount of a cream or other topical you'd like to test to the inner part of your arm and monitor if it causes a reaction within hours to 24 hours. However, she warns that this is not a precise method. At-home testing involves using a product that can contain various ingredients. If you do have an allergy, you wouldn't know which component is causing the reaction. In-office patch testing, on the other hand, uses individually identified allergens at higher concentrations, which are more likely to show a reaction and offer a more targeted result. It's best to do a patch test every time you try a new hair or skin product, especially if you have sensitive skin or a history of atopic dermatitis or eczema. 'It's also important to test products that contain active ingredients or fragrances, which are more likely to cause irritation,' says Dr. Engelman. 'Patch testing is best done at least 24 to 48 hours before using the product widely, to give enough time to spot any reaction.' If you choose to perform a patch test at home, Dr. Engelman shares these step-by-step instructions: Choose a small, discreet area of skin to test, such as behind the ear, the inner forearm, or your foot. Apply a small amount of the product to that spot, spreading it thinly and evenly. Cover the area with a bandage or leave it uncovered if the product dries quickly. Wait at least 24 to 48 hours without washing or disturbing the spot. Check the area for any signs of redness, itching, swelling, or irritation. If there's no reaction, the product is likely safe to use on your skin. If irritation appears, avoid using the product and consult a dermatologist if needed. After completing these steps, it is important to take action should a reaction occur. 'It will be easy to tell if a patch test reveals an adverse reaction—you'll likely notice redness, itching, small bumps, and/or unusual warmth, which can signal early irritation,' Dr. Engelman says. 'If your patch test causes a reaction, stop using the product right away and gently wash the area with cool water and a fragrance-free cleanser. Applying a gentle, fragrance-free moisturizer can help soothe the skin. If the reaction gets worse or doesn't improve in a day or so, consult your dermatologist for guidance.' It's important to note that you can still have a delayed reaction even if your patch test showed no immediate issues. 'Some sensitivities develop slowly and may only appear after repeated or prolonged use of a product,' Dr. Engelman says. 'The patch test checks for quick reactions but doesn't always catch long-term irritation or allergies. Always watch your skin closely when trying something new, even after a clear patch test.' If you have a history of reactive skin and it is only getting worse over time, then Dr. Kobets suggests getting a professional patch test in consultation with a dermatologist. As far as what to expect during a professional patch test, the process is fairly straightforward. A dermatologist will typically apply standard allergens on your back unless you already have an active rash, acne, or reaction on the area. 'You're advised to avoid exposure to sun and moisture, avoid scratching, and to come back at a specific time throughout the week for the first reading at 48 hours and then a second reading at 72 to 96 hours,' Dr. Kobets explains. Your dermatologist or allergist may ask you to avoid specific medications, such as antihistamines and topical or oral steroids, for a specific number of days before the testing, as they can interfere with the results, adds Dr. Kobets. 'You may want to keep a list of products you're allergic to or sensitive to, and note a common unifying ingredient that reappears in all of these,' she adds. If you have sensitive skin or suspect a new product may trigger a reaction, patch testing is a good idea. Going the DIY route can be fine, but keep in mind that it won't always accurately predict a reaction. 'You should see a professional for a patch test if you have persistent or severe skin reactions that don't improve with home care,' Dr. Engelman says. 'It's especially important if you experience widespread redness, swelling, blistering, or intense itching after using products. A dermatologist can perform a more thorough patch test to identify specific allergens or irritants. They can also recommend personalized treatment and help you avoid triggers in the future.' Read the original article on Byrdie
NBC News
06-06-2025
- Health
- NBC News
Should you be wearing a UPF Sun hat? Here's why dermatologists say yes
People often underestimate the importance of a hat when spending time outdoors. Yes, hats do a great job of keeping sunlight out of your eyes and making it easier to see, but some of them can also help protect your skin, similar to sunscreen. This is why dermatologists recommend wearing clothing with Ultraviolet Protection Factor (UPF). 'Topical SPF is a great tool, but it also isn't perfect. Chemical sunscreens must be fully absorbed to work, about 30 minutes after application,' says board-certified dermatologist Dr. Dendy Engelman. 'For physical [mineral] sunscreen, if you do not have consistent application or an area rubs off, then you are not adequately protected.' UPF clothing, including hats, is the first line of defense against ultraviolet (UV) radiation, especially for those with sensitive skin. But what exactly is UPF? We consulted experts to understand how UPF works and used their guidance to compile the best UPF hats to shop for. What is the UPF rating? 'UPF stands for Ultraviolet Protection Factor. It shows how well a fabric protects you from UV rays,' according to Dr. Mohiba Tareen, a board-certified dermatologist at Tareen Dermatology. 'These are the rays that can cause skin aging (UVA) and burning (UVB). A UPF rating tells you how much UV radiation can get through the fabric.' As an example, if a hat has a UPF 50 rating, that means that 1/50th (2%) of UV rays pass through, so it blocks 98%.Here's a quick breakdown to determine how protective UPF ratings are: How we picked the best UPF hats When shopping for a UPF sun-protective hat, our experts stress the importance of keeping the following key factors in mind: UPF rating: Although the Skin Cancer Foundation allows a minimum of UPF 30, the most optimal level of protection is 50+, says Tareen. A UPF rating of 30 means the fabric allows 1/30th, or about 3%, of UV radiation to pass through. A garment rated UPF 50 permits only 1/50th, or about 2% of UV transmission. Any fabric that permits less than 2% is labeled UPF 50+. Weave density: The denser the fabric, the better it blocks the rays. For a quick visual check, Dr. Tareen recommends holding the hat up to the sunlight to gauge its transparency. Color: 'The more intense the hue, the better the protection,' according to the Skin Cancer Foundation. Dark or bright colors, including red, black and navy blue, absorb more UV rays than lighter colors, like whites and pastels. Material: Different types of material matter as well, according to our experts. For instance, unbleached cotton, rayon, flax and hemp all consist of natural fibers that absorb UV rays, while shiny polyester, nylon or lightweight satin silks deflect the rays and are considered more protective. In addition, these latter materials are quick-drying, which is another plus, as a study conducted by the National Center for Biotechnology Information found that UV protection appears to be less effective when the material is wet. Coverage: The best sun-protective hats should have a minimum 3-inch brim around the circumference or a minimum 3-inch bill with a permanently attached drape to cover the neck and ears, according to the Skin Cancer Foundation. For baby and toddler hats, the foundation recommends a 2½-inch brim. The best UPF hats to shop in 2025 Below, we rounded up a list of the best UPF hats for men, women, kids and babies that meet the experts' criteria. All provide optimum coverage, have a UPF rating of 50 or more and have the Skin Cancer Foundation's Seal of Recommendation. Many of them also have at least a 4-star average rating from 500 reviews or more on Amazon or at least 100 reviews at a retailer. This unisex wide-brimmed safari hat has UPF 50+ protection to block out 98% of the sun's rays, according to the brand. It has breathable mesh to keep you sweat-free and also includes an adjustable chin strap to keep it in place during windy days. This option also has a 4.5-star average rating from 27,768 reviews on Amazon. This brimmed fishing hat is made from a fast-drying, textured nylon that keeps you cool by pulling moisture to the fabric's surface to keep sweat at bay, according to the brand. It has an adjustable chin strap and toggle for a secure fit during windy days on the water, along with vented sides for increased breathability. The hat is one size fits all, and comes in 32 different colors. Best UPF hat for women This stylish braided straw fedora has UPF 50+ protection, along with a removable drawstring and an adjustable built-in strap to ensure the right fit. Coolibar Etta Shapeable Sun Catcher Hat $49.50 $55.00 Amazon Now 10% off $55.00 Coolibar Coolibar boasts unanimous approval from our experts, and the brand is 'respected in gear quality and longevity, so it's a very safe purchase and one that should invoke confidence in the buyer,' says Minars. With UPF 50+ protection in a fabric that's both breathable as well as shapeable, this adjustable hat is a top pick. Tareen loves this high-end, stylish lightweight option that has the look of a fashionable straw hat without compromising the protection of UPF. Not only does this model come in seven different color options but it's also designed to guard skin from 95% of UVA and UVB rays, according to the brand. Best UPF hat with neck protection This protective sun hat from Sunday Afternoons, which has a 4.6-star average rating from 1,789 reviews at Amazon, has a brim made with foam to help maintain its shape and prevent it from flying away in the wind. The underside of the hat has a dark hue to help absorb reflective light and prevent glare, according to the brand. The inside also has a sweatband and the back of it is extra long to help protect your neck. Best baseball-style UPF hat If you prefer the look of a baseball cap but still want the protection of a UPF hat, this option, which has a 4.4-star average rating from 14,400 reviews on Amazon, is a good choice. It has an adjustable strap and absorbs water and sweat to maintain a cool temperature for up to 2 hours, according to the brand. It's made of a breathable material, ideal for athletic activity and is machine washable. Best fedora-style UPF hat Whether you're out golfing or spending time at the beach, this stylish UPF 50+ hat will help keep you protected from the sun. Recommended for when you want to travel light, according to the brand, the Coolibar Travel Fedora has an interior moisture-wicking sweatband and mesh grommets for increased airflow. It also has a 4.2-star average rating from 310 reviews at Coolibar. Another expert favorite, this UPF 50+ hat lets you stay protected during a day on the water. With a 4.4-star average rating from 389 reviews at Coolibar, this hat provides all-around protection, including around the ears. The convertible style allows you to add extra neck coverage when you want while a covered mesh panel and sweatband help keep you cool. Best mesh UPF hat This versatile, adventure-ready hat has a 4.4-star average rating from 4,233 reviews on Amazon. It's water-resistant, breathable, UPF 50+ and adjustable, according to the brand. With a wide brim, interior sweatband and flap to protect your head, neck and ears, this foldable hat is a solid choice for keeping you covered in the sun this summer and beyond. Best UPF hat for kids This full-coverage sports hat has a 4.6-star average rating from 229 reviews at Amazon and features an attached neck drape for additional protection as kids splash in the water and comes in a quick-drying UPF 50+ material that's both chlorine- and saltwater-resistant, according to the brand. Best bucket UPF hat for kids UV Skinz is one of Tareen's go-to brands, she says. As a mom of five, she appreciates both the safety and practicality of these UPF 50+ hats that she says actually stay on little heads. Plus, this versatile style has a sun flap to cover ears and necks but can also be tucked away. Best UPF hat for 9 to 18 months These Green Sprouts hats give full coverage from the sun to little necks and ears. They are also machine-washable, come in a UPF 50+ water-wicking material and feature an adjustable toggle to grow with the baby. This hat also has a 4.8-star average rating from 123 reviews at Green Sprouts. Best UPF hat for babies With reversible patterns, playful 3D animal details and a range of colors, there's an adorable option for every baby fashionista from Durio. The brand also makes the Summer Beach UPF Hat for toddlers and kids up to 8 years old. These lightweight sun hats block up to 98 percent of UVA and UVB rays with a UPF 50+ cotton and polyester fabric. Best reversible UPF hat for babies Given the amount of time Tareen's five kids have spent in these UPF 50+ sun protective hats, she knows that they aren't only safe but they also stay on with their simple tie. These water-friendly, reversible hats come in both boys and girls versions in an array of patterns and colors. How to shop for a UPF hat Although style is always top of mind — and there are plenty of great options out there to choose from — it's important to invest in a hat that fully protects you and is best for your needs. Fortunately, our experts say there are several key factors that will easily rule out the good from the not-so-good. SCF seal: A good place to start is looking for the Skin Cancer Foundation's Seal of Recommendation, according to our experts. Although the optimal rating is UPF 50+, the foundation grants this seal to fabrics that have a minimum of 30 UPF on the lightest shade in the product range. In addition, the clothing awarded this seal must also pass a number of tests by the American Association of Textile Chemists and Colorists. Brim coverage: As noted above, our experts also said to invest in at least a 3-inch wide brim to shade the face, scalp, neck, shoulders and upper back. Kids' brims should be a minimum of 2.5 inches, according to the Skin Cancer Foundation. Water resistance: If you're planning to wear your hat at the beach or for any other water activity, look for a hat that will dry quickly if it gets wet, as studies have found that UPF hats are less effective when wet. Other key considerations when shopping for a quality UPF sun hat or any other type of UPF clothing, according to our experts, include opting for darker colors and tighter weaves, like polyester and nylon rather than cotton, flax and hemp, which absorb UV rays rather than deflect them. Meet our experts At NBC Select, we work with experts who have specialized knowledge and authority based on relevant training and/or experience. We also take steps to ensure all expert advice and recommendations are made independently and without undisclosed financial conflicts of interest. Why trust NBC Select?
Vogue
05-06-2025
- Health
- Vogue
15 Retinol-Rich Foods To Stimulate Collagen
It's a well-known fact that topically applying retinol can make a major difference when it comes to reversing damage to your skin. An active form of vitamin A, retinol is considered the gold-star anti-aging ingredient when it comes to smoothing lines, clearing acne, and reversing sun damage. But you don't have to simply incorporate it into your nighttime routine: Vitamin A is available in your diet, too. 'Diet plays a significant role in our skin's health and appearance,' says Manhattan-based board-certified dermatologist Dendy Engelman, MD, FAAD. 'There are studies to support that increased vitamin intake helps skin in both the aging space and acne.' Here's how you can take advantage of vitamin A in your diet to improve your skin. Benefits of vitamin A Vitamin A is a fat-soluble vitamin (more on that later) that is key for a healthy body. 'The human body does not produce vitamin A, so it must be obtained externally through our diet and skincare,' Dr. Engelman says. 'Retinol, like other retinoids, is a derivative of vitamin A. When applied topically to the skin, it is converted to retinoic acid, the active form of vitamin A in the body.' When it comes to the edible form, vitamin A comes in two forms: retinol, which is found in foods that originate from animals, and carotenoids, which are derived from plant-based foods and converted into vitamin A when digested. 'Appropriate vitamin A intake helps support healthy skin, hair, and nails,' Dr. Engelman adds. 'Vitamin A plays a role in regulating sebum production and cell turnover, which are important for maintaining a healthy skin barrier (including the scalp) and supporting the hair growth cycle. Vitamin A is also necessary for the synthesis of keratin, which is a vital structural protein for both hair and nails.' Daily requirement of vitamin A Daily vitamin A requirements vary depending on age, sex, and health conditions (if you're pregnant or breastfeeding, that changes it, too). According to the Mayo Clinic, adult males should take 900 micrograms (mcg) and adult women should take 700 mcg. It is important to note that the body does not need large amounts of vitamin A every day, but regular, balanced intake is essential to maintain the right balance and prevent deficiencies. A warning about vitamin A-rich foods 'It's important to note that consuming too much vitamin A can actually be very toxic for the human body, leading to a condition known as 'hypervitaminosis A,'' adds Dr. Engelman. 'This can result in a number of unwanted and potentially dangerous side effects—including, ironically, a disrupted and unhealthy skin barrier, and hair loss. Therefore, it is very important to avoid excessive consumption of vitamin A (or any compound!) and speak with your doctor to determine the diet that's best for you.' 15 vitamin A-rich foods
