11 Ingredients You Should Avoid in Common Deodorants and Antiperspirants

The most questioned ingredients in commercial deodorants include aluminum salts, which block sweat but can cause irritation; synthetic fragrances that cause allergies and hide chemicals like phthalates; PEGs and ethoxylated compounds that may contain potentially carcinogenic impurities; propylene glycol, an irritating humectant; silicones like cyclopentasiloxane and dimethicone, which interfere with the skin's natural function; harsh preservatives like triclosan and BHT, with possible hormonal effects; and talc, due to cases of asbestos contamination. Avoiding them is key to caring for your sensitive skin and reducing long-term risks.

Have you ever read the label on your deodorant? Many commercial products contain ingredients that can irritate the skin, affect the natural microbiota, or have questionable environmental effects. In this guide, we explore 11 ingredients you should avoid in deodorants and why choosing a natural option like Maxalli can make all the difference.

Controversial ingredients in deodorants and antiperspirants:

1. Cyclopentasiloxane

This is a type of volatile silicone used in antiperspirants to give the product a silky texture and facilitate its application. The problem is that it does not provide any benefit to the skin and has been linked to environmental bioaccumulation, meaning it does not degrade easily and contaminates water bodies. In addition, it can interfere with the natural regulation of sweat and oil. It is usually the main ingredient in antiperspirants.

2. Polyethylene

Yes, the same material used in plastic bottles. It is used in the form of microplastics to give body or a gliding effect to deodorant. Although it may seem harmless in contact with the skin, the use of microplastics in cosmetics has been strongly questioned due to their environmental impact and for being completely out of place in a daily care routine. It is not biodegradable and can absorb toxic molecules in the environment that are ingested by marine fauna and then consumed by humans.

3. Aluminum salts

Present in antiperspirants to physically block sweat glands. They react on the skin to clog pores and are regulated as drugs because they modify body function. Although their use is approved, many people report irritation, pimples, cysts, or dark spots after frequent application. Furthermore, their relationship with diseases such as breast cancer and Alzheimer's has been the subject of debate, generating mistrust among some of the public. Aluminum is categorized as a metalloestrogen, which can affect hormone expression and even fertility.

4. Propylene glycol

A main ingredient in gel and "full body" deodorants, it is a petroleum-derived humectant widely used due to its low cost. In 2018, it was named allergen of the year by the Contact Dermatitis Society in the United States, as it can cause irritation, redness, and even allergic reactions in sensitive skin. It is especially problematic in products applied daily to closed areas such as the armpits.

5. Synthetic fragrances

Not only can they cause allergies or sensitivity, but they often include hidden phthalates under the word “fragrance”. These compounds are associated with hormonal disruptions and fertility problems. Furthermore, since their exact composition is not required to be declared, the consumer does not really know what they are applying. Also, many contain extra chemicals that act as fixatives to prolong the scent on the skin. A large part of these ingredients are synthetic and non-biodegradable.

6. Ethyl Alcohol

It is included to give an immediate feeling of freshness and accelerate drying. However, it dries the skin, alters the skin barrier and can cause burning, especially after shaving or on skin with micro-wounds. Its frequent use can increase the sensitivity of the area over time.

7. Harsh preservatives (such as triclosan, parabens or BHT)

Some deodorants include powerful antimicrobial ingredients that alter the natural balance of bacteria on the skin. Triclosan, for example, is prohibited in several formulations in the US due to its potential endocrine-disrupting effect.

8. Talc

Used to absorb moisture, but its purity has been questioned. Cases of asbestos contamination in cosmetic talcs have been found, linked to cancer. Although not all talcs are dangerous, it is an unnecessary ingredient in modern formulas that seek safety and efficacy without risks.

9. PEGs and ethoxylated compounds

The polyethylene glycols (PEGs) and other ingredients ending in -eth such as ceteareth-20, PEG-40 hydrogenated castor oil, steareth, polysorbate or laureth-4, are derivatives of ethylene oxide. Although they are used as emulsifiers or solubilizers, they can be contaminated with impurities such as 1,4-dioxane, a potentially carcinogenic compound. Dioxane is produced as a byproduct during the manufacturing process of these ingredients and it is impossible to eliminate it completely. In addition, its manufacturing is highly polluting.

10. Dimethicone

A silicone polymer used to soften the skin. It is not toxic in itself, but it is occlusive: it can clog pores, cause breakouts and pimples and give a false sense of softness while preventing the skin from breathing properly. It is not biodegradable.

11. Petrolatum (Vaseline), Paraffin, Ozokerite and Mineral Oil

Petroleum derivatives, they are used as cheap occlusives. Although they are approved for cosmetic use, they do not provide real nutrients or benefits to the skin. In addition, their non-renewable origin makes them incompatible with a sustainable care approach. They are not biodegradable and are persistent in the environment. If not properly purified, they can contain carcinogenic compounds.

What does Maxalli deodorant offer?

The Maxalli Natural Deodorant completely eliminates these problematic ingredients and focuses on functional, biodegradable, and gentle formulas. It contains no aluminum, alcohol, synthetic fragrances, or microplastics. Instead, it offers:

• Caprylic capric triglycerides: vegetable emollient that softens without clogging.
• Selected essential oils: only in aromatic versions, in low and safe percentages.
• Candelilla wax: gives texture without the need for synthetic polymers.
• Natural deodorant active ingredients: such as triethyl citrate, a citric acid derivative that inhibits bad odor without affecting natural sweat.
• Biodegradable ingredients and packaging: all components are environmentally friendly and plant-based.
• Fragrance-free options: ideal for ultra-sensitive skin or people with allergies.

You can check the list of ingredients we use here: Botanical ingredients

Conclusion

What you put on your underarms every day matters. The difference between healthy skin and constantly irritated skin often lies in the ingredients. While commercial deodorants prioritize texture, cost, and artificial scent, Maxalli prioritizes the health of your skin and the planet.

Ready to eliminate these ingredients from your routine? Discover Maxalli deodorants and care for your skin with clean and effective formulas.