Arm Hammer Ultramax Active Sport Deodorant 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.
Arm & Hammer
Arm Hammer Ultramax Active Sport Deodorant
PFAS grade
Excellent 75/100
Overall grade
Good 59/100
Verdict
Buy
Hazard flags
⚑ 4
Material
Aluminum compound (stick deodorant), baking soda, talc/mineral powders, waxes
Confidence
78%
PossibleAluminum absorption and systemic exposure
PossibleTalc contamination (asbestos or heavy metals)
PossibleFragrance sensitization and contact dermatitis
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 and systemic exposure, Talc contamination (asbestos or heavy metals), Fragrance sensitization and contact dermatitis and Baking soda irritation in sensitive skin on the Arm & Hammer and not on the Primally Pure.
- We flag Skin irritation from magnesium hydroxide alkalinity on the Primally Pure and not on the Arm & Hammer.
- The Arm & Hammer is Aluminum compound (stick deodorant), baking soda, talc/mineral powders, waxes 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 →
More deodorant, see the full ranking