Roz Salt Scalp Scrub vs Charcoal Dog Shampoo: which is safer?
Roz Salt Scalp Scrub is our pick: better on PFAS and on the overall hazard picture.
Our pick
Credo Beauty
Roz Salt Scalp Scrub
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleFragrance allergens or undisclosed fragrance components
ReportedMechanical irritation from crystal size and shape
Kin+Kind
Charcoal Dog Shampoo
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
Possible1,4-dioxane (surfactant byproduct)
PossibleFragrance allergens and undisclosed fragrance components
PossiblePreservative contamination and microbial growth
Where these two actually differ
- We flag Fragrance allergens or undisclosed fragrance components and Mechanical irritation from crystal size and shape on the Credo Beauty and not on the Kin+Kind.
- We flag 1,4-dioxane (surfactant byproduct), Fragrance allergens and undisclosed fragrance components, Preservative contamination and microbial growth and Skin irritation from charcoal particles or abrasives on the Kin+Kind and not on the Credo Beauty.
- The Credo Beauty is salt crystals, mineral-based scrub where the Kin+Kind is Water-based liquid shampoo with charcoal, 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 Credo Beauty 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 shampoo: see the full ranking