Crystal Deodorant Stick
No coating of concern recorded, and no PFAS statement from the brand.
The brand has published no PFAS statement for this product that we could find.
We flunk more products than we pass. This one earned its grade. How we grade
Material
mineral salts (potassium alum complex), water-based
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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What Crystal Deodorant Stick is made of, ingredients and materials
Crystal Deodorant Stick is formulated from potassium alum complex, a naturally occurring mineral salt, suspended in a water-based vehicle. Potassium alum has been used in personal care for decades and functions as an astringent that inhibits odor-causing bacteria without blocking sweat (antiperspirants use aluminum chlorohydrate, which is distinct). The water-based carrier means no volatile organic solvents or petroleum distillates are present, reducing inhalation and skin irritation risks common in aerosol or alcohol-heavy formulas.
What’s concerning
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
Fragrance allergens and sensitizers
Crystal's formulations vary; some products are unscented, while others contain essential oils or fragrance compounds. If fragrance is listed, individuals with fragrance sensitivity should verify the ingredient list; no specific allergen warnings are documented for the brand.
Skin irritation from mineral salts
Potassium alum can cause temporary mild irritation (tingling, dryness) in individuals with compromised skin barriers or very sensitive skin, though this is less common than with baking soda deodorants. Risk increases if applied to freshly shaved or broken skin.
Microbial contamination from water vehicle
Water-based formulations require adequate preservation to prevent bacterial or fungal growth. If the stick is exposed to excessive moisture (e.g., wet bathroom environment without ventilation) or contaminated by unclean application, shelf life and safety may be compromised; store in a dry location and avoid wet fingers during use.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Heavy metals
Potassium alum itself is not a known source of lead, cadmium, or arsenic when sourced to cosmetic-grade standards. No contamination events have been reported for Crystal brand products.
Source, FDA ↗Formaldehyde / VOCs
Crystal's water-based, mineral-salt formulation typically requires minimal synthetic preservatives. No formaldehyde-releasing agents (such as DMDM hydantoin) are known to be used in standard Crystal products, though full preservative disclosure would require review of the complete ingredient list.
Source, ATSDR ↗How is this PFAS grade calculated?
The brand's record and disclosure
Crystal has maintained a consistent, ingredient-forward marketing stance emphasizing mineral salts and water as the primary components. The brand does not publish formal third-party certifications (such as EWG Verified or Leaping Bunny), nor has it issued public statements on PFAS avoidance, though no PFAS coating of concern has been recorded on the product itself. No major safety recalls or dermatological controversies are established in public databases for this product line.
How it compares in its category
Crystal occupies the mineral-salt segment of the deodorant market, competing with brands like Thai Crystal and Primal Pit Paste. Unlike conventional antiperspirants (which use aluminum salts that occlude sweat glands), this category prioritizes odor control with minimal systemic absorption. Compared to natural stick deodorants relying on baking soda, arrowroot, or essential oils, Crystal's potassium alum formulation is less likely to trigger irritation in sensitive skin, though efficacy claims vary by individual.
If you buy it
Apply to clean, dry skin once daily; slight white residue is normal and harmless. The stick itself is physically durable and shelf-stable at room temperature; no refrigeration or special storage is required. Replace when depleted or if the stick becomes visibly dried or crumbly (typically 2-3 months of daily use). Discontinue use if rash, stinging, or contact dermatitis develops; patch test on inner arm first if you have sensitive skin or a history of aluminum-compound sensitivities.
What is not known about PFAS in this product?
- Basis
- Model estimate, 78% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Crystal has made none
Formulations change between production runs, so check the current label. How we grade.
What are the PFAS-free alternatives to Crystal Deodorant Stick?
- mineral-based powder blend (arrowroot, magnesium hydroxide, mica)
- We found no PFAS statement from the brand
- Skin irritation from magnesium hydroxide alkalinity
- cosmetic formulations, primary ingredients listed
- A third party reports verifying it as PFAS-free
- Fragrance allergens (natural essential oils)
2 hazards checked on this product, all on its full breakdown.
- natural mineral powders, plant-based actives, beeswax
- We found no PFAS statement from the brand
- Beeswax purity and contamination
2 hazards checked on this product, all on its full breakdown.
More deodorant grades
How we score, every product runs through the same public 0-100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.