Novel strategies are currently under investigation for the prevention and treatment of atopic dermatitis (AD). The supplementation of the diet with probiotics, prebiotics and postbiotics is probably one of the most promising approaches. Hereby, we summarize the current available evidence regarding the use of probiotics, prebiotics and postbiotics in AD. Biotic products seem to have a beneficial effect on AD, especially concerning its prevention. However, the evidence to support the supplementation of the diet with biotics for the management of AD is still not enough to make clear recommendations.