From how many sessions of Skin Botox do fine wrinkles start to smooth out?

With the arrival of the season where dryness intensifies, my skin concerns are worsening. In particular, I have deep fine lines around my eyes and mouth, my skin tone is uneven, and it has lost its radiance. My friends have recommended Skin Botox, saying it is effective for these issues. Is it effective for smoothing fine lines and improving skin texture after just one session, or do I need to get it regularly to see gradual improvement? For those who have tried it, at which session did you start seeing results?