Hair on the head loses fullness and elasticity as it ages, just like your skin. The hair botox are supposed to help fill the hair, make it smooth, and reduce frizz. Botox for hair doesn’t actually contain the ingredient of botulinum toxin, which is the main ingredient of Botox. Instead, it’s a name based on how the product works. Just like Botox works by relaxing the muscles and smoothing skin, Hair Botox works by filling in individual fibres of hair to help give it fullness and make it smooth. Hair stylists at the salon use best products. The treatment fills in any broken, thin areas on each hair strand to make hair appear full and lustrous.