Baking Soda Free Deodorant vs Signature Scent Duo Salt & Stone: which is safer?
Primally Pure Baking Soda Free Deodorant is our pick: better on PFAS and on the overall hazard picture.
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
Salt & Stone
Signature Scent Duo Salt & Stone
PFAS grade
Excellent 75/100
Overall grade
Good 67/100
Verdict
Buy
Hazard flags
⚑ 2
Material
fragrance blend, mineral salt, plant extracts
Confidence
72%
PossibleFragrance allergens (undisclosed)
PossibleSkin irritation from undiluted fragrance concentration
Where these two actually differ
- We flag Skin irritation from magnesium hydroxide alkalinity on the Primally Pure and not on the Salt & Stone.
- We flag Fragrance allergens (undisclosed) and Skin irritation from undiluted fragrance concentration on the Salt & Stone and not on the Primally Pure.
- The Primally Pure is mineral-based powder blend (arrowroot, magnesium hydroxide, mica) where the Salt & Stone is fragrance blend, mineral salt, plant extracts, 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: 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