Use only as directed. Wet the hair thoroughly. Initially a preliminary application maybe necessary to break through the natural oils on the hair. Should this be necessary to work the shampoo into the coat and then rinse off and re-apply immediately working it into a good lather.
Leave for at least 15 to 20 minutes or longer then thoroughly rinse off with clean water.
When using the F10® GERMICIDAL TREATMENT SHAMPOO WITH INSECTICIDE it would be desirable to leave to dry to maximize the residual effect. Repeat the treatment up to three times applied every other day or until the skin condition has cleared.