Roz Salt Scalp Scrub vs T/Sal Therapeutic 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
Neutrogena
T/Sal Therapeutic Shampoo
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleSalicylic acid skin irritation and sensitization
PossiblePreservative-related contact dermatitis (fragrance and preservatives)
PossibleContamination or microbial growth if improperly stored or maintained
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 Neutrogena.
- We flag Salicylic acid skin irritation and sensitization, Preservative-related contact dermatitis (fragrance and preservatives) and Contamination or microbial growth if improperly stored or maintained on the Neutrogena and not on the Credo Beauty.
- The Credo Beauty is salt crystals, mineral-based scrub where the Neutrogena is aqueous liquid shampoo (salicylic acid, conditioning agents), 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