Thai Deodorant Stone vs Baking Soda Free Deodorant: which is safer?
Primally Pure Baking Soda Free Deodorant is our pick, better on PFAS and on the overall hazard picture.
Thai Deodorant Stone
Thai Deodorant Stone
PFAS grade
Excellent 75/100
Overall grade
Good 59/100
Verdict
Buy
Hazard flags
⚑ 4
Material
mineral (alum-based rock/salt)
Confidence
80%
PossibleAluminum absorption via skin
PossibleSkin irritation and contact dermatitis
PossibleBacterial or mold growth on stone
Our pick
Primally Pure
Baking Soda Free Deodorant
PFAS grade
Excellent 100/100
Overall grade
Excellent 96/100
Verdict
Buy
Hazard flags
⚑ 1
Material
mineral-based powder blend (arrowroot, magnesium hydroxide, mica)
Confidence
82%
PossibleSkin irritation from magnesium hydroxide alkalinity
Where these two actually differ
- We flag Aluminum absorption via skin, Skin irritation and contact dermatitis, Bacterial or mold growth on stone and Fragrance allergens (if scented variant) on the Thai Deodorant Stone and not on the Primally Pure.
- We flag Skin irritation from magnesium hydroxide alkalinity on the Primally Pure and not on the Thai Deodorant Stone.
- The Thai Deodorant Stone is mineral (alum-based rock/salt) where the Primally Pure is mineral-based powder blend (arrowroot, magnesium hydroxide, mica), which is most of the difference in these two grades.
- The gap is 25 points, wide enough that this is not a close call, and the Primally Pure is the one to buy.
Both products run through the same public rubric, which covers materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →
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