Key Takeaways:
- PG isn't "poison," but it's not for everyone: Cosmetic-grade PG is considered safe as used in cosmetics, yet it can cause irritant or allergic contact dermatitis in susceptible individuals.
- Chemical free means fewer synthetic carriers: A true natural deodorant skips PG, aluminium, magnesium hydroxide, and baking soda in favour of botanicals.
- Lavilin works with your body: We neutralise odour-causing bacteria without pore-blocking, aluminium, or baking soda.
Should you be worried about propylene glycol in your deodorant? For most people, no, but if you've got sensitive skin, it's one ingredient worth a second glance. PG is a synthetic carrier that keeps deodorants smooth, and while it's not dangerous in the horror-movie sense, it's a common cause of underarm irritation.
Here at Lavilin, we've spent 40+ years perfecting natural deodorant that skips the synthetic shortcuts. We use probiotic-based science and botanicals, no aluminium, no baking soda, no PG needed.
In this piece, we'll cover types of chemicals in deodorant, whether some are worth avoiding and how to choose a genuine, gentle but effective deodorant.
What Is Propylene Glycol And Why Is It In Your Deodorant?
Propylene glycol is a commonly manufactured synthetic ingredient that does a lot of behind-the-scenes work in personal care. It's not there for odour protection, it's there for texture and feel.
What it does in the formula
It helps create a smooth, spreadable texture, keeps the deodorant from drying out, and can also enhance the penetration of other ingredients into the skin. PG can help lengthen the shelf life of skin care products thanks to antimicrobial properties, and at low levels it's used to improve moisturising benefits since it has a high affinity for water.
Where else you'll find it
It's everywhere, honestly. It's used in e-cigarette e-juice, salad dressings, medications, supplements, and antifreeze, and it's used widely in cosmetic items.
Is Propylene Glycol In Deodorant Safe, Or Worth Avoiding?
Short answer: It's considered safe for most people, but "safe for most" isn't the same as "great for everyone." If your skin flares up easily, PG is a fair thing to skip.
What the safety data says
The Cosmetic Ingredient Review's expert panel concluded that both PG and PPGs were not acute or chronic toxicants in oral or dermal studies, were not genotoxic or carcinogenic, and were not reproductive or developmental toxicants at the concentrations and uses reviewed in cosmetics (International Journal of Toxicology, 2012).
On the flip side, the Environmental Working Group gives PG a middle-of-the-road rating, not highly dangerous, but not without risk, and higher concentrations can increase the chance of skin irritation, especially for sensitive skin.
The real concern: irritation
This is the sticking point. PG can be a skin irritant, and in a deodorant, it can lead to increased friction in the underarm and irritation, plus it's a documented cause of both irritant and allergic contact dermatitis, especially in a leave-on product, though an Australian patch-testing case series found confirmed reactions in only a small share of tested patients (Contact Dermatitis, 2023).
Reactions have been reported at relatively low concentrations in susceptible individuals, though risk depends on formulation, exposure, skin condition, and personal sensitivity. For a product you apply daily to a warm, enclosed area, that's worth knowing.
Understanding What Makes A Truly Low-Tox Deodorant
A genuinely low-tox deodorant is really about avoiding synthetic, harsh ingredients rather than achieving literal chemical-free status. Here's the honest truth: every product, natural or not, is made of chemicals. Water is a chemical. So is aloe vera extract. "Chemical-free" is technically a myth, but what people actually mean when they use the phrase is completely valid; they want a deodorant free from synthetic, harsh, or potentially irritating ingredients like propylene glycol, aluminium, parabens, and artificial fragrance.
A genuinely cleaner deodorant relies on naturally derived, skin-compatible ingredients that do the job without trade-offs. It doesn't block pores, majorly disrupt your microbiome, or leave you wondering what you're absorbing through your skin every morning.
That's exactly the standard Lavilin is built on, no aluminium, no sodium bicarbonate, no magnesium hydroxide, no parabens, no unnecessary synthetics. Just ingredients that work with your body, not against it.
If you're curious about why more people are making this shift, there are very good reasons to switch to natural deodorant that go well beyond just avoiding a few ingredients.
How Lavilin Crafts Non-Toxic Deodorant Formulations That Work
Building a genuinely non-toxic deodorant took the long road: 40+ years of R&D to create a natural formula that actually goes the distance. Our approach is simple: work with your body, not against it.
The science behind it
Sweating is healthy. Odour comes from bacteria, not sweat itself. So instead of plugging your pores with aluminium, we use probiotic-based actives and botanicals to neutralise the odour-causing bacteria while supporting the good bacteria your skin needs.
pH and the microbiome
Our formulas are gentle and work with your skin's natural pH. Human skin surface pH is generally acidic, often around 4-6, and a lower, acidic pH supports barrier function and resident microbiota (International Journal of Cosmetic Science, 2006). That's a big deal if you're coming off an alkaline product that uses sodium bicarbonate or magnesium hydroxide, as it helps maintain the environment where good bacteria thrive.
How To Choose A Safe Botanical Alternative For Daily Odour Protection
Switching away from propylene glycol and other synthetic ingredients doesn't mean settling for a deodorant that doesn't work. It means being a little more deliberate about what you're choosing and why.
Not all options are created equal, either. Understanding whether natural deodorants are they all the same can help you make a more informed choice.
What to Look for
A genuinely skin-friendly deodorant relies on botanical and probiotic-based ingredients that neutralise odour-causing bacteria without blocking pores or disrupting your skin's natural balance. Look for pH-balanced formulas free from aluminium, baking soda, parabens, and alcohol, with a short, recognisable ingredient list you can actually read.
What Lavilin Uses Instead
Rather than synthetic humectants like propylene glycol, Lavilin's formulations use naturally-derived botanical extracts and probiotic science to deliver days of odour protection, kind to sensitive skin, supportive of your microbiome, and free from the ingredients worth avoiding.
Making The Switch To A Cleaner Deodorant: What To Expect
Switching is easy, but honesty first: if you're coming off an aluminium antiperspirant or a sodium bicarbonate/magnesium hydroxide deodorant, expect an adjustment period.
For a deeper look at what this process involves, read more on why you should make the switch to using natural deodorant.
The Transition Period
If you've been using a conventional antiperspirant for years, your body may need time to adjust. Antiperspirants physically block sweat ducts, so when you stop using them, your skin begins recalibrating. Some people notice increased sweating or odour in the first one to four weeks as the body rebalances. This is normal and temporary, and a sign that your skin is doing exactly what it's supposed to do.
Why It Happens
Long-term antiperspirant use can alter the underarm microbiome, shifting the balance toward odour-causing bacteria. A microbiome-friendly deodorant without aluminium, like Lavilin, works to rebalance that environment over time, but the shift doesn't happen overnight.
How to Make It Easier
Staying consistent is key. Softly wash underarms daily with a gentle, pH-balanced wash, apply your new deodorant as directed, and give your skin time to settle. Most people find that within a few weeks, odour is well under control, often better than it ever was with conventional antiperspirant.
Final Thoughts
Propylene glycol isn't the villain some corners of the internet make it out to be; cosmetic-grade PG is broadly considered safe when used in cosmetics. But for sensitive skin, it's a genuine risk of irritation, and it's simply not necessary for a deodorant to work. A real deodorant without chemicals leans on botanicals and good science instead of synthetic carriers, aluminium, and baking soda. That's exactly the lane we've been in for four decades. Sweat freely, smell fresh, and let your skin do its thing.
Frequently Asked Questions About Propylene Glycol In Deodorant: What It Does And Whether You Should Be Concerned
Is propylene glycol harmful in deodorant?
Not for most people, but it can be. The primary concern is skin irritation and allergic reactions, especially in sensitive individuals, since levels in some deodorants can be problematic.
Which ingredient should I avoid in deodorant?
Aluminium tops most lists, followed by baking soda, parabens, and some synthetic fragrance. If you're sensitive, propylene glycol is worth avoiding, too.
How much propylene glycol is safe per day?
Food Standards Australia New Zealand (FSANZ) permits propylene glycol in certain food applications, but this doesn't translate into a straightforward "safe daily amount" for deodorant use on skin. Skin tolerance varies significantly from person to person, and what causes no reaction in one individual can trigger irritation in another.
How long does propylene glycol stay in your body?
Not long, the body metabolises and clears it relatively quickly, which is why it's not considered a chronic toxicant. That said, propylene glycol can be toxic at high doses or over long periods.
Who should avoid using deodorants containing propylene glycol?
Anyone with sensitive skin, eczema, or a history of contact dermatitis. PG can act as an irritant, particularly on broken or sensitive skin, causing redness, itching, burning, and even blistering.
What is the difference between industrial and cosmetic grade propylene glycol?
Purity. USP or cosmetic/pharmaceutical-grade PG must meet purity specifications appropriate for regulated uses, whereas industrial-grade PG is not intended for cosmetic or pharmaceutical use and may contain impurities. Even high-purity PG can irritate or sensitise some individuals.
Sources:
- Fiume, M. M., Bergfeld, W. F., Belsito, D. V., Hill, R. A., Klaassen, C. D., Liebler, D., Marks, J. G., Shank, R. C., Slaga, T. J., Snyder, P. W., & Andersen, F. A. (2012). Safety assessment of propylene glycol, tripropylene glycol, and PPGs as used in cosmetics. International Journal of Toxicology, 31(5 Suppl), 245S–260S. https://doi.org/10.1177/1091581812461381
- Lambers, H., Piessens, S., Bloem, A., Pronk, H., & Finkel, P. (2006). Natural skin surface pH is on average below 5, which is beneficial for its resident flora. International Journal of Cosmetic Science, 28(5), 359–370. https://doi.org/10.1111/j.1467-2494.2006.00344.x
- Patel, R., et al. (2023). Allergic contact dermatitis from propylene glycol: A case series from Australia. Contact Dermatitis, 89(2), 79–84. https://doi.org/10.1111/cod.14325
