Use a cold sore patch or hydrocolloid bandage
Apply a small amount of concealer matched to your skin tone
Dab on color corrector if needed: yellow for redness, peach for dark discoloration
Set makeup lightly with translucent powder
Keep the area clean and dry before applying anything
Avoid picking, squeezing, or peeling the sore
Use a lip balm or ointment to reduce cracking
Wear a mask if appropriate and comfortable
Keep hair styled to partially cover the area if possible
Avoid sharing makeup, towels, or lip products