Roz Salt Scalp Scrub vs Ghost 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
Verb
Ghost Shampoo
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
Possible1,4-dioxane (secondary contaminant from surfactant synthesis)
PossibleFragrance allergens and undisclosed fragrance components
PossiblePreservative-related irritation or contact dermatitis
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 Verb.
- We flag 1,4-dioxane (secondary contaminant from surfactant synthesis), Fragrance allergens and undisclosed fragrance components, Preservative-related irritation or contact dermatitis and Microbial contamination if bottle or application method is unsanitary on the Verb and not on the Credo Beauty.
- The Credo Beauty is salt crystals, mineral-based scrub where the Verb is Water-based aqueous solution with surfactants, polymers, glycerin, 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