Travel Size Thickening Blow-Dry Prep Spray - Bumble and bumble's Thickening Blow-Dry Prep Spray is a lightweight thickening pre-styler spray boosts hair thickness before you blow-dry to help you achieve your lushest, voluminous blowout.BenefitsIdeal for fine to medium hair types looking for voluminous blowout.Key IngredientsCopolymer: helps provide light-to-medium holdPolyquaternium-11 and UP/VA Copolymer: provide light hold and controlFormulated WithoutPhthalatesFormaldehydeMineral OilParabens - Travel Size Thickening Blow-Dry Prep Spray