Estimate how long heat protectant lasts and its monthly cost.
Heat protectant is sprayed before every hot tool session, so its monthly use depends on how often you style your hair. Using heat protectant daily is a protective habit, and knowing its cost keeps the ongoing beauty spend honest.
Heat Protectant Monthly Cost
Months per bottle = size / (mL per use x uses per week x 4.35)
Months per bottle = size / (mL per use x uses per week x 4.35) Heat protectant is sprayed before every hot tool session, so its monthly use depends on how often you style your hair.
Using heat protectant daily is a protective habit, and knowing its cost keeps the ongoing beauty spend honest.
This calculator takes 4 inputs: Bottle size, mL per use, Uses per week, Bottle price. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.