Razor bumps and ingrown hairs are very different. Ingrown hairs usually occur when a hair has been cut too short and retracts back into the hair follicle; this causes the hair to curl back into the skin while growing rather than passing through the skin's surface. As it continues to grow under the skin, a bump will appear as a sign of injury.
The best time to release an ingrown hair is after a warm/hot shower in the area. The water softens/conditions the area while the steam expands the hair and pores. You'll see that the razor or ingrown hair bump has enlarged, making the trapped easier to lift out (in the case of razor bumps) and extricate (in the case of ingrown hairs). Our next post will discuss more on how to treat ingrown hairs in the next post. For now here's a visual guide that explains the 3 most common bumps that can occur after shaving.