I Have Slight Bruises in my Smile Lines Three Months After Restalyne, Is This Normal?

Bruising doesn't last three months, so you're likely noticing actual product that was placed more superficial, showing a bluish tinge. It's called the "tyndall" effect and happens occasionally (either by more superficial placement of the product) or can sometimes appear as the product wears off.

Bruises should have resolved by this time (3 months after Restylane injection).  Sometimes if Restylane is injected too close to the surface of the skin, it can give the skin a bluish hue (this is called the Tyndall effect).  I recommend you go back to your injector for evaluation.  If it is the Tyndall effect, it will go away when the Restylane dissolves.  This can be sped up by injecting hyaluronidase (an enzyme that will dissolve Restylane).

Bruising cannot last for three months. So if there is some discoloration around the smile lines at this point, it's not bruising, but something else. It could be superficial filler that you can see through the skin (this would be a bluish whitish coloring). I would suggest an in person consultation with your injector for an evaluation and assessment of the area.