Wedgewood Blue

I have an herb called wedgewood blue and I am not sure how it should be used. i.e. edible, soaps, creams, etc.

We have no idea what this plant is. The name appears to be a cultivar name, i.e. a name given to a special variety of a species of plant. For example, there is a variety of English lavender known as 'Hidcote Blue'. The flowers are darker blue than those of the standard form of English lavender. Our best guess is that this might be a little known variety of lavender or rosemary; but there are thousands of other possibilities. We suggest you inquire at the nursery where you bought the plant. If that fails, take a sprig of leaves and flowers to a professional botanist at your local university or botanical garden. Once the plant is identified we can help answer your question.