The California Proposition 65 Warning is a label that is required to be included on any product sold in that state that contains any of a long list of ingredients.
In the case of our creams, the label must be included for sale in California because of the inclusion of hormones. Of course, with our creams, the customer should already be aware of the hormone content. But in order to be in compliance with that law, we still need to include this label.
Outside of the hormone content of the creams, there would be no requirement to include the Prop 65 label. Of course, we always recommend consulting with your doctor first especially if you're trying to conceive, pregnant, or breast feeding.