Fever Blister Showdown: Fast-Acting Gel Versus Odorless Care...-tested Relief Now! We’ve tried countless remedies for fever blisters, but the Fast Acting Cold Sore Treatment Gel has quickly become our go-to solution. Its .14-ounce size packs a punch—literally—thanks to its enhanced lysine formula, which seems to speed up healing time significantly. The gel is clear and odorless, which is a huge plus when we need discretion during an outbreak. Applying it feels cool at first and provides targeted relief, though we did notice minor stinging on the initial application. After just a few hours, the blister started to flatten, and by day two, the redness was less noticeable. While we haven’t tested its claims of full recovery in record time, it certainly helps us feel confident we’ll return to our normal appearance faster. So far, this gel is proving to be a reliable ally in the fight against fever blisters.