If it's still in the skin, use tweezers to carefully remove the stinger or insect (i.e. ticks)
Wash the affected area well with soap and water.
Use insect repellent: Apply to exposed skin before heading outside and reapply as needed.
If you’re spending a lot of time outside, wear pants and long-sleeved clothing to avoid skin exposure. Light colored clothing will help you more easily locate ticks.