Oat Milk Blend Shampoo vs Roz Salt Scalp Scrub: which is safer?
Roz Salt Scalp Scrub is our pick: better on PFAS and on the overall hazard picture.
Aveeno
Oat Milk Blend Shampoo
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleFragrance allergens and undisclosed fragrance components
PossiblePreservative-related irritation (formaldehyde releasers)
Possible1,4-dioxane contamination (manufacturing byproduct)
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
Where these two actually differ
- We flag Fragrance allergens and undisclosed fragrance components, Preservative-related irritation (formaldehyde releasers), 1,4-dioxane contamination (manufacturing byproduct) and Eye irritation from surfactants if misused on the Aveeno and not on the Credo Beauty.
- We flag Fragrance allergens or undisclosed fragrance components and Mechanical irritation from crystal size and shape on the Credo Beauty and not on the Aveeno.
- The Aveeno is aqueous shampoo formulation with oat and milk derivatives where the Credo Beauty is salt crystals, mineral-based scrub, 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