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What's Actually In Your Deodorant — And Why It Matters
Most people apply deodorant every single day without ever looking at the ingredient list. This is the guide we wish existed — plain English, no scare tactics, just clarity on what's in conventional deodorant, what those ingredients are actually doing, and what a cleaner alternative looks like.
Your underarms are one of the most absorbent areas of your body. The skin is thin, the lymph nodes are close, and you apply product to this area every day for decades. What you put there is worth knowing about — not in a panic-inducing way, but in a simple, informed-decision way.
What's in conventional deodorant and antiperspirant
Aluminium compounds
The active ingredient in most antiperspirants. Aluminium zirconium tetrachlorohydrex and aluminium chlorohydrate are the most common forms. They work by forming a temporary gel in the sweat duct that physically blocks sweat from reaching the skin surface. The research on long-term effects is ongoing — what's certain is that you're mechanically blocking a natural body function every time you apply it.
Parabens
Preservatives used to extend shelf life — methyl, propyl and butylparaben are the most frequently listed. They're effective at preventing microbial growth but have been found to mimic oestrogen in the body, which is why many brands have moved away from them. Look for "paraben-free" on the label, or better yet, check the ingredient list itself.
Synthetic fragrance
This single word — "fragrance" or "parfum" — can legally represent a blend of hundreds of undisclosed chemicals. It's a trade secret protected under EU and UK cosmetics law, which means manufacturers don't have to tell you what's inside it. It's one of the leading causes of contact dermatitis and skin sensitivity in personal care products. If your deodorant makes your skin react, this is usually the first thing to investigate.
Propylene glycol
A petroleum-derived humectant used to improve texture and absorption. Generally considered safe but derived from fossil fuels and associated with occasional skin irritation in sensitive individuals.
Triclosan
An antibacterial agent widely used in deodorants until it was banned from soap products over concerns about hormone disruption and antibiotic resistance. It still appears in some cosmetic products. Worth checking your current label if you haven't recently.
A useful rule of thumb: if you can't find an ingredient in a kitchen or garden, it's worth asking whether it belongs in a product you apply to thin, absorbent skin every single day of your life.
No aluminium · no parabens · no synthetic fragrance
Gyaskin Natural Deodorant
An ingredient list you can actually read. 5 scents, Sensitive & Regular strength.
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What's in Gyaskin — and what each ingredient actually does
A good natural deodorant ingredient list should be transparent and readable. Here's exactly what Gyaskin uses and why each ingredient earns its place:
| Ingredient | What it does |
|---|---|
| Magnesium hydroxide | Creates an alkaline environment that odour-causing bacteria struggle to thrive in. Gentle, effective, and completely bicarb-free — the backbone of our Sensitive formula. |
| Sodium bicarbonate | Neutralises the acidic by-products of bacterial activity — the compounds that actually cause odour. Highly effective; present in Regular strength only. |
| Zinc ricinoleate | Derived from castor oil. Absorbs and neutralises odour molecules rather than masking them. Works alongside magnesium for multi-angle odour control. |
| MCT oil (coconut-derived) | A lightweight, skin-friendly base that absorbs quickly and leaves no greasy residue. Naturally antimicrobial. |
| Shea butter | Nourishes and protects delicate underarm skin. Particularly helpful after shaving when the skin barrier is temporarily compromised. |
| Tapioca starch | Absorbs moisture naturally without blocking pores. Keeps the underarm comfortable throughout the day. |
| Bamboo extract | Soothing and skin-conditioning. Supports comfort during application and throughout the day. |
| Vitamin E (Tocopherol) | Antioxidant protection for the skin. Helps keep the formula stable and supports skin health with daily use. |
| Named essential oils | Lemon myrtle, eucalyptus, cedarwood and others — listed individually, never hidden behind the word "fragrance". Chosen for both scent and natural antimicrobial properties. |
How to read a deodorant label
Ingredients are listed in descending order of concentration — the first five or six make up the bulk of the product. If the first ingredient is water followed by a string of unrecognisable chemical names, that tells you something. If it starts with shea butter and MCT oil, that tells you something very different.
Watch out for "natural" on the front of the packaging. It's not a regulated term in the UK. Any brand can print it regardless of what's actually inside. The only reliable way to know what you're applying is to read the INCI list on the back — the full ingredient list using standardised scientific names.
INCI names can look intimidating. Butyrospermum Parkii Butter is shea butter. Bambusa Arundinacea Stem Extract is bamboo. Once you recognise a few, reading ingredient lists becomes second nature — and you'll spot the difference between a genuinely clean formula and one that's just marketed that way.
Quick check: open your current deodorant and look for these three things. Does it list "fragrance" or "parfum" without naming specific oils? Does it contain aluminium? Are parabens in the first half of the list? If yes to any of these, you now know exactly what you're dealing with.
Try before you commit
Mini Discovery Pack
Sample all 5 scents and find your perfect formula.
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The bottom line
You don't need to be alarmed about what you've been using. But you do deserve to be informed. The case for switching to natural deodorant isn't built on fear — it's built on the simple logic that if a cleaner, equally effective alternative exists, why not use it?
An ingredient list you can read. Skin that's allowed to breathe. A daily product you feel good about putting on. That's really the whole argument.
