Luckily I found a perfect solution in an unexpected product. Body Glide is used by triatheletes and marathon runners to prevent blisters and chafing. You can pick up Body Glide at any sporting goods store. It looks a lot like solid deodorant and works in the same way. Rub on the glide on areas of your feel that tend to get irritated, such as the toes, sides, and ankles. The stick provides an invisible layer of protection on your skin and does not stain, darken, or damage the leather of your shoes.
I used glide with a new pair of Revas and didn't get any blisters at all! It really does work! Have you had a tough time breaking in a new pair of boots or shoes? What solutions have worked for you?