If your infant is at increased risk of allergies due to a genetic predisposition, hypoallergenic food, or HA for short, can be a sensible supplement or alternative to breast milk. HA baby food varies from manufacturer to manufacturer, which is why you should always follow the instructions on the respective packaging.
However, the special food does not prevent all forms of allergy, but primarily you can reduce the risk of neurodermatitis. It is also important to seek advice from your paediatrician and midwife.