I'm considering getting Botox for my forehead wrinkles. Will it be effective?

Lately, I'm worried because forehead wrinkles keep catching my eye whenever I look in the mirror. I didn't usually pay much attention to them, but when I take photos or apply makeup, the wrinkles look more distinct than I expected. Perhaps because I have a habit of unconsciously raising my eyebrows often, it seems like faint wrinkles remain even when I'm not making any facial expressions.

I have consistently used home care products and anti-wrinkle cosmetics, but it feels like the wrinkles that have already formed are not disappearing easily, so I am looking into dermatological procedures. People around me say that Botox is effective for forehead wrinkles, so I became interested, but I am a little worried since it is my first time getting it.

I am wondering if getting forehead Botox could make my facial expressions look unnatural or make my eyebrows feel heavy. I would also like to know if the injection is administered to the entire forehead or just to the areas with wrinkles. I prefer a look where wrinkles are naturally less visible rather than making my forehead look too taut; would Botox be suitable in this case?

If anyone has received forehead Botox, I am curious to know how effective it actually was for wrinkle improvement and how long the results lasted. I would also appreciate recommendations on an appropriate dosage and treatment method for first-time patients.