According to the search results, there is some confusion about whether LOreal Infallible Foundation is water-based or silicone-based. However, and both state that LOreal Infallible Pro-Matte Foundation is water-based. This foundation is described as air-light, long-lasting, and super-hydrating, with a blendable medium coverage. It is also free of oils and fragrances, and wont clog pores. On the other hand, and suggest that LOreal Infallible Foundation is silicone-based. It is important to note that different types of LOreal foundations may have different ingredients and formulations. Therefore, it is recommended to check the ingredients list of the specific LOreal foundation in question to determine whether it is water-based or silicone-based.