Are Deodorants & Antiperspirants Harmful? What Science Says

Antiperspirants and deodorants are everyday essentials for most people, but with growing concerns over their safety, many are asking whether these products could pose health risks. Are they linked to serious diseases like breast cancer or Alzheimer’s?

Let’s take a closer look at the science behind these concerns and explore whether deodorants and antiperspirants are really harmful to your health.

Deodorants vs. Antiperspirants: Understanding the Difference

First, it's important to clarify the difference between deodorants and antiperspirants:

Deodorants are designed to mask or eliminate body odor caused by bacteria on your skin.
Antiperspirants reduce the amount of sweat your body produces by temporarily blocking sweat glands.

Both products are generally safe when used as directed, but their ingredients and effects on the body can vary. Let's dive into the scientific evidence surrounding these products.

Are There Harmful Effects of Using Deodorants and Antiperspirants?

Over the years, some studies have linked the use of antiperspirants to serious health problems such as breast cancer, Alzheimer’s disease, and kidney dysfunction. However, many of these studies are inconclusive or have been debunked by further research.

Let's break down the most common health concerns:

The Breast Cancer Myth: Does Aluminum in Antiperspirants Increase Risk?

One of the most well-known concerns is that aluminum compounds in antiperspirants could increase the risk of breast cancer. Some early studies suggested a link between aluminum found in cancerous breast cells and the use of antiperspirants. However, this claim has been largely debunked.

What the science says: The American Cancer Society states that there is no clear evidence that aluminum compounds in antiperspirants cause breast cancer. While aluminum is absorbed through the skin in small amounts, your body is very good at filtering out toxins through the kidneys and liver.

Key takeaway: The current scientific consensus is that antiperspirants are not a significant risk factor for breast cancer. The FDA has deemed aluminum-based antiperspirants safe for use.

Alzheimer’s and Dementia: Is There a Link to Antiperspirants?

Another concern that has been raised is whether the aluminum in antiperspirants could be linked to Alzheimer’s disease and other forms of dementia. This is based on an outdated theory that aluminum buildup in the brain might contribute to Alzheimer’s.

What the science says: Two studies from 2011 and 2016 independently from each other found no consistent evidence that antiperspirants or aluminum exposure increases the risk of Alzheimer’s. The idea that aluminum causes Alzheimer’s has been largely rejected by modern research.

Key takeaway: There is no strong evidence linking the use of antiperspirants to Alzheimer’s disease or dementia.

Kidney Function and Aluminum: Should You Be Concerned?

There is a specific group of people who should be cautious about aluminum exposure — those with severely impaired kidney function (less than 30% kidney function). In these cases, aluminum can accumulate in the body, potentially causing harm.

What the science says: For the general population, aluminum exposure from antiperspirants is not a significant concern. However, individuals with compromised kidney function should follow their doctor’s advice regarding the use of products containing aluminum.

Key takeaway: If you have kidney disease, consult with your doctor before using aluminum-based antiperspirants.

The Myth of "Sweating Out" Toxins

A common misconception is that sweating helps your body eliminate harmful toxins, including carcinogens. Some believe that antiperspirants block this process, thereby trapping toxins inside.

What the science says: The truth is that your body doesn’t rely on sweat to expel toxins. Your liver and kidneys are the primary organs responsible for detoxification, not your sweat glands.

Key takeaway: Using antiperspirants doesn’t prevent your body from detoxifying itself. There's no scientific basis for the claim that blocking sweat increases the risk of toxin buildup.

Real Antiperspirant Side Effects

While the risks of major diseases are unlikely, some people experience mild side effects from using deodorants and antiperspirants. These include:

Skin Irritation

The most common side effect is skin irritation, including redness, itching, or a rash. This is often caused by fragrances, alcohol, or preservatives like parabens.

What to do: If you experience irritation, choose fragrance-free or hypoallergenic products. Look for deodorants that are labeled as sensitive skin-friendly.

Hormone Disruption

Some ingredients like parabens (preservatives) and triclosan (an antibacterial agent) have been shown in laboratory studies to interfere with hormone function.

What to do: Many brands have already removed parabens and triclosan from their formulas due to consumer demand. Always check labels for these ingredients, especially if you are concerned about hormone disruption.

Changes to the Armpit Microbiome

Emerging research suggests that antiperspirants may affect the balance of bacteria living on your skin, particularly in the armpit area. However, the long-term effects of this change are still unclear.

What to do: If you're concerned, consider switching to a natural deodorant that doesn’t disrupt the microbiome, though more research is needed to fully understand these impacts.

The Shift Toward Natural Deodorants: Are They Safer?

In recent years, many people have turned to natural deodorants made from ingredients like baking soda, coconut oil, and essential oils. These products generally avoid aluminum, parabens, and synthetic fragrances.

What the science says: While natural deodorants are often marketed as safer, they may still cause irritation in some people due to certain natural ingredients (e.g., baking soda can be harsh on sensitive skin).

Key takeaway: Natural deodorants are a good option for those who prefer products with fewer chemicals, but they aren’t necessarily more effective at controlling odor or preventing sweat. It's important to find a product that works for you and suits your skin type.

Conclusion: Should You Be Worried About Antiperspirants and Deodorants?

The evidence overwhelmingly suggests that deodorants and antiperspirants, when used as directed, are not harmful to most people. Concerns about links to cancer, Alzheimer’s, or kidney damage have not been substantiated by strong scientific evidence.

However, some individuals may experience mild irritation or allergic reactions, and those with kidney problems should be cautious about aluminum exposure. If you’re concerned about the ingredients in your products, consider switching to natural alternatives, but remember that these may not be a perfect solution for everyone.

For the general population, antiperspirants are safe for daily use. However, if you experience adverse side effects or are simply looking for a more reliable solution to manage underarm sweat, there’s an alternative.

Thompson Tee is a sweat proof undershirt designed to block underarm sweat — or your money back. With its patented built-in sweat proof underarm barrier, it absorbs sweat and helps it evaporate, keeping you sweat-mark-free all day long.

Available in various sizes, necklines, and colors for both men and women, you're sure to find the perfect fit for your style. Try it risk-free and experience the comfort of sweat-free confidence!