Use a cold sore patch or hydrocolloid bandage
Apply a thin layer of petroleum jelly to keep it moist
Use a concealer or color corrector only if the sore is not open or oozing
Choose a green-tinted corrector to reduce redness
Dab on a skin-tone concealer with a clean applicator
Set makeup lightly with translucent powder
Avoid touching or picking at the sore
Wash hands before and after applying anything
Use a separate applicator and discard or sanitize it after use
Keep lips hydrated with a gentle lip balm
Avoid heavy makeup on cracked or bleeding sores
Use antiviral treatment as directed by a healthcare professional
Avoid kissing or sharing cups, utensils, or lip products until healed