Atomic Soap?

You might have a platinum or gold credit card in your wallet, but no-one expects their card to actually consist of precious metals. Similarly, in the 1900s (when radium was extremely valuable), products used words like "atomic", "radium", and "X-ray" in the names! Here are a couple of examples from Retronaut.com, and you can click through for more.

Image from RetroNaut.com

Image from RetroNaut.com

Image from RetroNaut.com

Image from RetroNaut.com