Summarize:

If using a disposable razor, choose four or five blade razors instead of single blade razors.  Single blade razors will drag against your skin more.  If you shave with a reusable razor, change your blade after 5 to 10 shaves. Dull and/or old blades are more likely to cause bumps, redness, and contain bacteria.  If you are prone to ingrown hairs, try an electric razor or clippers.  Hold the razor or clipper slightly away from your skin when you shave.  If you are using a disposable razor, you should replace it after it has been used for 5 to 7 shaves. This will keep your skin from getting irritated.  Look for razors with moisturizing strips that contain Acai or Jojoba oil. Only safety razors should be used to shave pubic hair. Shave your hair in the same direction that your hair grows.  Although you will get a closer shave by shaving against the grain, you will increase your chances of irritating your skin. If you want a closer shave, you can shave against the grain once you have gone over your skin by shaving with the grain. Your skin may be able to tolerate it if you do it this way.  Do not pull your skin super tightly as you shave.  Shave lightly if you are shaving over acne blemishes. Never try to shave off your acne with the blade.  Shaving with the grain will also help prevent ingrown hairs.  Rinse your blade after every stroke as well. Be gentle and shave slowly. You are more likely to cut yourself if you are rushing.  The razor should be doing the work.  You should not have to press the razor down too hard. If you feel like your razor is not working or you have to go over your skin repeatedly, it's probably time to get a new razor or change the blade. Once you are finished shaving, thoroughly rinse your skin with water and pat your skin dry.  Make sure all of the shaving cream is gone.  If you notice any rough spots or areas with hair remain, you can reapply the shaving cream and shave the area again.  However, multiple strokes increases your chance of irritation. Apply lotion or an after-shave balm to your skin once you are finished.  Avoid products that contain alcohol or any fragrance as these products can dry out and irritate your skin.  Look for products that are moisturizing and are formulated for dry and/or sensitive skin. This step is critical because shaving dries out your skin. Aloe vera is soothing to sensitive skin and can be applied after you get done shaving. If you experience ingrown hairs, razor burn, bumps, and/or cuts after you shave, you must take care of your skin to prevent further irritation. A warm compress can be applied to bumps and ingrown hairs.  For ingrown hairs, a sterile needle can be inserted under hair loops to lift the hairs as well. If your skin is consistently irritated after shaving, take a look at the products and razors that you are using.  1% hydrocortisone cream can be used for itchy skin. Apply the cream two or three ties a day. To treat razor burn, look for products that contain Wheat Germ, Yeast Extract, Vitamin E, Soybean Oil, Shea Butter, Jojoba Seed Oil, Evening Primrose Oil, and Silicones.  Wait until your skin has healed before shaving again.  If your skin does not get any better, you should see a health care professional.
Choose a razor. Shave with the grain. Take your time. Rinse your skin. Moisturize your skin after shaving. Treat any skin irritation.