Using only warm water and a washcloth, clean the lip area of any lip preparations, lotions, ointments, residual beverages, or cosmetics, including lipstick.
Remove the cardboard cap from the applicator end and place the cardboard cap onto the glass/plastic vial end, opposite the brush end of the product.
Squeeze the cardboard cap to break open the inner glass vial.
Saturate the applicator end with solution by holding the brush end down and squeezing the container until you can see liquid on the brush applicator.
For best results, massage the solution into the cold sore by rubbing. Rub firmly, but take care not to damage the tissue. The purpose of the rubbing is to deliver the drug to the infection site. Hold the vial so the solution flows to the sore.
To treat most cold sores, usually one treatment is enough. If your symptoms go away and then return later, apply another dose for the second cold sore.
Do not use more than 3 times per day.
Children under 2 years of age — ask a doctor.
Discard after use.