Barber rash is caused by a bacteria called staphylococcus aureus that infects the hair follicle. Barber rash, razor bumps can quickly diminish your hopes for soft and Smooth skin.
Fresh razor blades are among the best forms of razor bumps prevention, clean blades are free of bacteria. You also need to change your razor often to maintain a clean shave.

Techniques
Shave slowly with small strokes to prevent irritation. Also consider shaving in the same direction your hair grows to prevent hairs from curling backwards into the skin.

Creams and gels
Shaving creams and gels protect the skin from nicks and irritation while adding moisture. Along with sharp razors, there are different types of products that can be your best friends in combating bumps in severe cases.