Roz Salt Scalp Scrub vs Natural 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

A 100/100

Overall grade

B 86/100

Verdict

Buy

Hazard flags

⚑ 2

Material

salt crystals, mineral-based scrub

Confidence

82%

PossibleFragrance allergens or undisclosed fragrance components

ReportedMechanical irritation from crystal size and shape

Why this gradeBuy

Puracy

Natural Shampoo

PFAS grade

A 90/100

Overall grade

C 78/100

Verdict

Buy

Hazard flags

⚑ 3

Material

aqueous surfactants, plant-derived cleansers

Confidence

78%

Possible1,4-dioxane (contaminant in ethoxylated surfactants)

PossibleFragrance allergens and sensitizers

PossibleFormaldehyde releasers in preservatives

Why this gradeBuy

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