Do ‘Sweat Creams’ Really Work? Experts weigh In on Topical Thermogenics
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The weight-loss supplement market is booming, projected to reach $71.6 billion by 2030, but a growing number of products promising swift fixes are facing scrutiny. Among the latest trends are topical thermogenic exercise products – creams and gels marketed to increase sweat and promote weight loss – and experts are urging caution.
The appeal is simple: apply the product before a workout, pair it with a neoprene wrap to trap heat, and purportedly lose water weight without increasing effort. These products have gained traction through endorsements from fitness influencers,but do they actually deliver on their promises?
The Weight-Loss Industry and a History of Skepticism
The potential for profit in the weight-loss and sports nutrition industries is substantial. In 2024,the weight-loss supplement market was valued at $33.1 billion, according to Grand view Research.
Some manufacturers, like Sweet Sweat, focus on promoting water weight loss, others, such as Maryann Organics, claim their products can target subcutaneous fat – the fat directly beneath the skin – and facilitate it’s release into the bloodstream for energy through a process called lipolysis. these claims center around the idea of thermogenesis, or heat production, allegedly improving circulation and leading to weight loss.
The Science of Sweating: Does It Add Up?
According to thermoregulation expert Robert Girandola, PhD, a retired associate professor of biological sciences, the science behind these claims is questionable. “Sweating is your body’s air-conditioning mechanism,” he explains. “The only way you can increase sweat rate is if you increase body temperature. Exercise will do that. A sauna will do that. But I’ve never heard of a situation where sweat can be increased [by applying] an oil.”
Dr. Girandola further emphasizes that the caloric expenditure from sweat loss is minimal. “Sweat does increase caloric cost, but the amount of calories related to sweat loss is so minuscule that if you could measure it [during a workout], you wouldn’t fill a thimble,” he stated, adding that the majority of weight lost through sweating is simply water loss.
Potential Risks and Downsides
While generally considered benign when used as directed, thermogenic gels aren’t without potential risks, particularly given the limited research surrounding their use. “If a product or accompanying neoprene wrap were to prevent sweat from forming intentionally or otherwise,a person can get overheated,” cautions Dr. Girandola. “that’s where you run into cardiovascular problems.”
Strenuous exercise already leads to notable fluid loss,making adequate rehydration crucial. Symptoms of dehydration, such as dizziness, lightheadedness, dry mouth, and fatigue, can negatively impact workout performance, according to Johns Hopkins medicine.
Most labels include disclaimers stating the products are not FDA-approved, underscoring the need for a realistic approach to weight loss. As one expert noted, a thermogenic gel is unlikely to replace the hard work required for genuine, enduring results.
Alternatives and Precautions
Individuals seeking to rapidly lose weight sometimes turn to extreme measures like sauna suits, traditionally used by combat sports athletes to meet weight class requirements. However, research indicates that losing water weight through sweat can be hazardous and detrimental to performance. A sauna suit is a one-time purchase, but carries the same health risks as thermogenic gels.
Thermogenic supplements, containing ingredients like caffeine, green tea, and capsaicin, are another alternative. However, the National Institutes of Health (NIH) has associated these supplements with potential harm, and evidence supporting their effectiveness remains sparse.
Before incorporating any of these methods into your routine, consulting with a doctor is paramount. Thermogenic supplements and sauna use might potentially be unsafe for individuals with certain medical conditions or those taking specific medications.
Ultimately, a balanced approach to fitness and nutrition remains the most effective and sustainable path to achieving health and wellness goals.
