Chitosan Multi Use Styling Spray Refill 165m L vs Omega Leave-In Conditioning Spray: which is safer?

Dyson Omega Leave-In Conditioning Spray is our pick: better on PFAS and on the overall hazard picture.

Dyson

Chitosan Multi Use Styling Spray Refill 165m L

PFAS grade

C 75/100

Overall grade

F 43/100

Verdict

Buy with care

Hazard flags

⚑ 3

Material

Chitosan-based aerosol spray (biopolymer humectant)

Confidence

72%

PossiblePropellant inhalation risk (unspecified)

ReportedAerosol particle inhalation and lung deposit

LikelyLack of ingredient disclosure and testability

Why this gradeBuy

Our pick

Dyson

Omega Leave-In Conditioning Spray

PFAS grade

C 75/100

Overall grade

F 63/100

Verdict

Buy

Hazard flags

⚑ 3

Material

Water, conditioning agents, humectants (typical leave-in spray formulation)

Confidence

72%

PossibleFragrance allergens and skin sensitizers

PossibleSilicone or polymer buildup on hair

PossibleEye irritation if misapplied

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 hair spray: see the full ranking