Is it possible to get Botox for a square jaw and skin treatment at the same time?

I don't have a square jaw, but because I like hard and chewy textures and eat them often, my jaw muscles tend to tense up, and sometimes I hear a sudden popping sound when I open my jaw after waking up.

I understand that Botox improves this kind of thing, so I want to reduce the muscle size with square jaw Botox, but I found out that there is also Skin Botox? I heard that Skin Botox is a procedure that tightens the pores to make the skin firm and supple.

However, I saw a warning that Botox can cause a side effect called resistance, so I should be careful with excessive amounts. Can I have both procedures done at the same time?

I am concerned that getting two Botox injections like this might make my facial muscles look excessively unnatural or bumpy, making it difficult to go to work. If the results are very noticeable after the procedure, I plan to schedule it for a holiday or a Friday if possible.

Please share if it is okay to get the square jaw reduction and skin treatments together, and if those who have had them done together were highly satisfied.

Oh! And regarding the square jaw, when does the effect of skin Botox become visibly noticeable?