Prescription Strength Clinical Roll-On Antiperspirant 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.
Certain Dri
Prescription Strength Clinical Roll-On Antiperspirant
PFAS grade
Excellent 75/100
Overall grade
Good 57/100
Verdict
Buy
Hazard flags
⚑ 3
Material
Aluminum chlorohydrate or similar salt-based active; roll-on substrate (water, glycerin, starch)
Confidence
72%
PossibleFragrance allergens and sensitizers
PossibleSkin irritation from starch or glycerin
ReportedBacterial or fungal growth in applicator
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 Fragrance allergens and sensitizers, Skin irritation from starch or glycerin and Bacterial or fungal growth in applicator on the Certain Dri and not on the Primally Pure.
- We flag Skin irritation from magnesium hydroxide alkalinity on the Primally Pure and not on the Certain Dri.
- The Certain Dri is Aluminum chlorohydrate or similar salt-based active; roll-on substrate (water, glycerin, starch) 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