He is not advertising you dummy.
You can use any mouthwash with cetylpyridinium chloride which is the active ingredient in crest.
Walgreens brand is very good also.
I too have had some success with this.
Gets rid of bacterial / fungal overgrowth.
However not sure if its a cure since inflamation is still present but it does keep the bacterial/fungal levels low which prevents compounding infection on surface of lips.
Also limit sugars/carbs and no dairy...thhat also helps