I'm curious how long the effects of Botox usually last.

I have a bad habit of unconsciously squinting between my eyebrows whenever I look at a computer monitor, so I am very worried that deep wrinkles might form.

My friends around me strongly recommended getting Botox as a preventative measure, saying it is much better to get it before wrinkles get deeper.

However, since I have never had it done in my life, I don't know how long the effects of Botox last after just one injection, so I can't bring myself to make a decision.

Although it may vary depending on individual muscle mass, I desperately need answers from those with experience regarding how many months the effects of Botox typically last on average.

Please also let me know if the effects of Botox last much longer in the future if I get injections regularly and consistently before they wear off completely!