Will smoking the day before a Restylane injection affect the result?

Smoking is not conducive for healing. Although, Many patients smoke and have had treatments with zero negative effects. It should not be concerning at this point. All the Best. 

While smoking is an overall health risk, it should not affect a dermatologic procedure such as injectable fillers.You should be fine.Best,Dr. Malouf

Smoking in general is not good for wound healing, etc.. But for fillers it usually has no specific impact on treatment.  Best of luck. Always best to ask your treating physician to be sure.