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

Dyson Omega Leave-in Conditioning Spray Refill 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 Refill

PFAS grade

C 75/100

Overall grade

F 63/100

Verdict

Buy

Hazard flags

⚑ 3

Material

aqueous conditioning spray (water-based, aerosol dispenser)

Confidence

72%

PossibleAerosol propellant inhalation

PossibleFragrance allergens and undisclosed components

PossibleMicroplastic content from synthetic polymers

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