Simple formulations with as few ingredients as possible minimize the risk of cross reactions.
The quickest way to spot a high-risk product is to look at the ingredients list. The longer the ingredients list, the higher the likelihood that you may react to it.
It is a requirement at VMV that our formulations achieve their preventive and therapeutic goals with as few ingredients as possible. We're highly selective about our ingredients - each one has to achieve maximum results and no irritation.