For strong definition with flat irons and curling irons This heat protectant and holding hair mist with mega control holds your tightest curls or flat ironed looks in place all day and night. Hot Sets 22 hair mist protects your hair from heat up to 450 degrees.BENEFITS? Lightweight thermal spray protects from heat up to 450F/232C? Boosts shine? Adds clean-feeling, touchable hold? With Heat Restyling Technology so you can apply once and restyle endlessly? Ideal for use with flat-irons and curling irons.