Looks like a rash and, like the name suggests, burns.
Not enough lubrication, a blunt blade dragged across the skin with too much pressure.
A sharp, new blade and enough lubrication from a dense shaving cream or gel. Moisturizing with an alcohol-free after shave balm will also calm shaving irritation.
NICKS & CUTS
Visible incisions or tiny microcuts that go through several layers of skin and sometimes bleed.
Shaving against the grain, going over the same area without reapplying a shaving barrier, using too much pressure or a blunt blade.
Always start by applying shaving gel, foam or cream. Shave with the grain (i.e., following the direction of hair growth), but keep in mind that hair changes direction in different areas. Use gentle strokes with a fresh blade. Prepping your face with a cleanser or an exfoliator before shaving will also help.
Inflamed red spots that look a lot like pimples because they sometimes have a "head."
The freshly cut hair curling back underneath the skin instead of growing straight out.
Regular exfoliation will help release trapped hairs over time. If you can actually see the hair "loop" above the skin’s surface (and you’ve got a steady hand), you can use the slanted edge of a pair of tweezers to flick the hair back out. Don't pluck. It'll only make things worse.