I checked "The Board Lady" repair website, and Eva suggests using
Smith and Co. Penetrating Epoxy for the worn spots on your deck.
Here's a link to the Smith and Co. website:
Sounds like the Clear Penetrating Epoxy is the right product, for several reasons.
Be sure to dry your deck out and leave it out in the sun for a while to, as Eve puts it, "Bleach the wood back to it's original golden patina".
Hope this helps,