Shaving irritation is unpleasant, but there are ways to prevent it from happening by enforcing good preparation and shaving techniques.
The best time to shave is when your skin is clean, wet and warm - you should also apply a shaving gel or cream to the area to make it easier for the blades to glide.
Shave in the direction of the hair - you might be able to get a closer shave by going against the grain, but you’re more likely to cause irritation.