The slap probably won't bruise. Get red, yes. But not bruise. It might even swell a bit. There are variables of course, including if the person being slapped is prone to easy bruising. The most likely reason it would bruise would be if the cheekbone gets clipped hard with the edge of the hand. That might leave a narrow bruise along the cheekbone.
That said, facial bruises do tend to heal faster than say bruises on the legs or torso. Arms and faces heal better. Depending on the severity of the bruise it could be fading to green/yellow anywhere from 3-6 days and take as little as a week-plus to be nearly gone or up to 3 weeks. Possibly 4 weeks for a more serious impact injury.
The slap probably won't bruise. Get red, yes. But not bruise. It might even swell a bit. There are variables of course, including if the person being slapped is prone to easy bruising. The most likely reason it would bruise would be if the cheekbone gets clipped hard with the edge of the hand. That might leave a narrow bruise along the cheekbone.
That said, facial bruises do tend to heal faster than say bruises on the legs or torso. Arms and faces heal better. Depending on the severity of the bruise it could be fading to green/yellow anywhere from 3-6 days and take as little as a week-plus to be nearly gone or up to 3 weeks. Possibly 4 weeks for a more serious impact injury.