With intense heat creating sweltering conditions for many Americans right now, you might be thinking about how to deal with sweat — particularly in the underarms region, which can get uncomfortable fast. You’re not doomed to sweating through your clothes, however: There’s a “genius” solution beloved by folks with hyperhidrosis, or excessive sweating. Reviewers say Thompson Tee’s sweatproof T-shirts “should be prescribed by doctors to people who sweat,” thanks to their nifty design that prevents pit stains.If you haven’t heard of Thompson Tees before, the brand appeared on an episode of “Shark Tank” in the 2010s. It’s since gained renewed attention after the costume designer for “The White Lotus” revealed that some cast members wore Thompson Tees under their clothing to soak up their sweat while filming in hot, humid Thailand.These shirts have clinical-grade sweatproof pads in the underarms. They wick sweat and moisture away from the skin while trapping it all within the fabric so that it doesn’t wet through your clothing. They’re designed to be worn as undershirts, discreet enough under other clothing that they won’t feel bulky or awkward, and still keep you cool. (You probably can wear them on their own, but you might have the best luck with black, since it doesn’t show the pad as much.)There are multiple styles of Thompson Tees, but for men, the best-reviewed option is the original fit crewneck in four colors and sizes XS-3XL, while for women it’s their slim fit crewneck in three colors and sizes XS-XXL. If you want to check out other styles for both, including V-neck styles, you can do so at the brand’s Amazon storefront.Potentially the greatest upside to wearing Thompson Tees is the confidence it’s bringing back in shoppers who have tried it. “Finally a solution to pit stains,” wrote one reviewer. “For the first time in my life I didn’t have pit stains by 9:00 AM. And I still didn’t have a single dark spot on my light colored blue shirt at 7:00 PM. These shirts work.” Another said, “It’s so embarrassing to have sweat stains under your arms and I’ve always been self conscious about it. I got three of these and I no longer show sweat under my arms and I can raise my arms with confidence.”AmazonThe tees are designed with built-in sweatproof pads under the arms.While you shouldn’t have to feel ashamed for your body’s natural sweat production, if pit stains are something you’re worried about, many reviews mention the confidence boost Thompson Tees provide. “The comfort of not having to wonder ‘how bad are my pit rings now’ is virtually priceless. Just last night I had to stand up in front of a room full of people and the comfort of knowing that my audience would not be aghast at my pit marks was...well, if you have this affliction then you know...there are no words to describe that peace of mind,” one shopper shared.They’re so useful for the heat people almost don’t believe it, according to shoppers who put them to the test. “Had an outdoor black tie wedding in Central Texas in triple digit heat. I knew I’d be soaking wet all night long if I didn’t do something, so I tried this with a lot of skepticism,” one person wrote. “I cannot say enough about how miraculously it worked.”However, they provide usefulness beyond hot summers if you tend to sweat while giving presentations, doing job interviews and other nerve-wracking situations. So while they’re on the pricier side, Thompson Tees are “worth every penny” year-round for anyone who deals with excessive sweating. They can help you save money on shirts in the long run and are a “cheaper, safer alternative” to getting Botox to prevent sweating.“As someone who has suffered with hyperhidrosis since my early teens, I have learned what materials work in my wardrobe and what materials to avoid no matter how pretty they are. I own a lot of black and a lot of sweaters. I am now 52 years old and can finally wear what I want without worry! IT WORKS,” another reviewer said. “The Thompson Tee fits close to the body and is not bulky under my clothing. It absorbs the perspiration and my NOW COLORFUL outer clothing stays dry. I do not worry anymore or get stressed that sweat is showing [through].”Below, check out some more promising reviews for just how much of a game-changer these tees truly are. “For anyone who has an issue with excessive sweating, please purchase these shirts. They are a game changer. The more you think about how much youre going to sweat, the more youre going to sweat. (For me atleast). Embarrassed for 20 years with this issue. But for the last 2 years, ive worn these undershirts and it puts your mind at ease and youll stop thinking about sweating and the Embarrassment.. since its no longer on my mind, i can go days without wearing these shirts and have no issues or very little issues, NOTHING compared to before. I was able to reprogram my mind over the last 2 years to not think about sweating or stress about it. Its amazing that i can go to the store with the confidence that i wont have huge pit stains within a few minutes. I love them.” — Michelle “The fit is perfect but this shirt really works! I have used Thompson tees for 5 years noe and I’m not limited to what I can wear now. No more black jackets with everything just to cover the sweat. If you have hyperhydrosis and you sweat a lot BUY THIS SHIRT.” — Ashley Nelson “Best I have EVER found! Mind you we are hiding the sweat, but this undershirt keeps it off the top shirt!!! No pit puddles! This was my last chance to find something before I went to get Botox in my underarms… They are worth every penny! I know they are steep, but will worth it!” — Aknipot “I was very skeptical about the price and if these T-shirts would perform as advertised. Well, they do! Love not having to worry about if I’m sweating through my shirt at work. These t-shirts are life changing.” — Bill “Absolutely incredible. I have bad hyperhydrosis, use clinical deodorant (which helps but barely) and have lived my whole life just having to be okay with pit stains…but this shirt didn’t show a DROP of sweat wearing dress shirts for a few hours at a time. Must buy !” — Tim Levandowski Need more products to keep you from melting in the heat? These handy items are a sweater’s best friends, from a list curated by the HuffPost Shopping team:AmazonA bundle of sweat-absorbing lotionIf sweaty palms and feet annoy you, these sweat-absorbing lotions by Carpe can reduce both sweat and odor when applied daily at night and in the morning (all you need is a dime-sized amount). The formula is gentle on all skin types and was developed by dermatologists.AmazonThese heavy-duty clinical strength antiperspirant wipesDesigned for the underarms specifically, these SweatBlock wipes come in packs of 10 and offer prescription-strength odor-blocking, if your sweat problem is more intense and lasting than the average scented body wipe can handle. The wipes work overnight and can prevent sweat for up to seven days, so the 10-pack can last you a long time.AmazonSome anti-microbial facial cleanser sprayA buildup of sweat (and therefore bacteria) can cause acne on your face and elsewhere. Of course, washing your face regularly after you work out or find yourself in another sweaty situation can help prevent these breakouts, but hey, you don’t always have the time.The SkinSmart Antimicrobial Facial Cleanser has similar ingredients as the TikTok-viral Tower28 spray, including hypochlorous acid, water, and sodium chloride (although we can’t account for ingredient quantity and potency levels) for way cheaper, and can be sprayed on after workouts or other sweaty situations to target acne and bacteria without irritating the skin.