Thickening Spray vs Osis+ Session Extreme Hold Hairspray: which is safer?
Bumble and Bumble Thickening Spray is our pick, better on PFAS and on the overall hazard picture.
Our pick
Bumble and bumble
Thickening Spray
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleVolatile Organic Compounds (VOCs) from solvents
PossibleFragrance allergens and sensitizers
PossiblePropellant-related respiratory irritation
Schwarzkopf
Osis+ Session Extreme Hold Hairspray
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
LikelyVolatile organic compounds (VOC) and propellant inhalation
PossibleUndisclosed polymer composition (PFAS/Teflon-family coating risk)
PossibleFragrance allergens and undisclosed ingredients
Where these two actually differ
- We flag Volatile Organic Compounds (VOCs) from solvents, Fragrance allergens and sensitizers and Propellant-related respiratory irritation on the Bumble and bumble and not on the Schwarzkopf.
- We flag Volatile organic compounds (VOC) and propellant inhalation, Undisclosed polymer composition (PFAS/fluoropolymer risk) and Fragrance allergens and undisclosed ingredients on the Schwarzkopf and not on the Bumble and bumble.
- The Bumble and bumble is spray formulation (polymers, propellant, solvents) where the Schwarzkopf is Aerosol hairspray (resin/polymer suspension in propellant), which is most of the difference in these two grades.
- These two are level, close enough that price and fit should decide it rather than our grade.
- We are less certain about the Schwarzkopf grade, at 35% confidence against 72%, because it discloses less.
Both products run through the same public rubric, which covers 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