If you are shopping for everyday lip care between outbreaks, browse Lip Balms and use our broader Lip Balm Guide. Do not share a balm used on or around an active cold sore.
What helps a cold sore?
The NHS recommends simple steps that reduce discomfort and help limit spread. Wash your hands with soap and water whenever you touch the area. If you apply an antiviral cream, dab it on rather than rubbing. Avoid kissing and oral sex until the cold sore has healed completely, and never kiss a baby when you have a cold sore because neonatal herpes can be dangerous.
A pharmacist may recommend:
- an antiviral cream, particularly when used at the early tingling stage;
- a product to ease pain or irritation;
- a cold-sore patch that protects the skin while it heals;
- advice on suitable pain relief.
Antiviral creams do not work for everybody and may be less useful once blisters have appeared. Follow the medicine leaflet and the pharmacist’s advice rather than treating an ordinary lip balm as a substitute.
Can you use lip balm on a cold sore?
A simple balm may reduce the uncomfortable feeling of dry lips, but use it hygienically. A stick applied directly to the sore can become contaminated, so do not continue sharing or repeatedly reuse it after the outbreak. If a clinician or pharmacist recommends an emollient product, apply it with clean hands or a single-use applicator and avoid rubbing.
Choose a product with a short, clearly labelled ingredient list if your lips are sensitive. Flavour, fragrance, strong cooling sensations and plumping ingredients may feel uncomfortable on cracked or irritated skin. Stop using any product that causes burning, swelling or worsening redness.
Sun protection and cold sores
Sunshine can trigger cold sores for some people. The NHS suggests using a sunblock lip balm with SPF 15 or above when outside. Apply it as directed and remember that eating, drinking and wiping the lips can remove product. A sun-protection balm can help manage a trigger; it cannot treat an active viral infection.
Cold sore hygiene checklist
- Wash hands before and after applying any product.
- Do not pick, squeeze or peel the sore.
- Do not share lip balm, lipstick, gloss, cups, cutlery or towels.
- Avoid touching the eyes after touching the affected area.
- Keep cosmetic applicators away from the sore.
- Replace lip products that had direct contact with the sore.
- Wait until the skin has healed before using lip scrub, plumping gloss or strong exfoliating products.
When to speak to a GP
According to the NHS, seek medical advice if the cold sore has not started to heal within 10 days, is very large or painful, keeps returning, or you think it may be something else. You should also contact a GP if you have a weakened immune system or if a child has swollen, painful gums and sores in the mouth. Pregnant people, newborn babies and people with weakened immunity may need specific medical advice.
Cold sore lip care FAQ
Will lip balm make a cold sore heal faster?
An ordinary cosmetic lip balm is for comfort and barrier support; it is not an antiviral treatment. Ask a pharmacist about evidence-based options and use them as directed.
Can I wear lipstick over a cold sore?
It is better to avoid applying shared or reusable lip cosmetics directly over an active sore. Application can irritate the area and contaminate the product or applicator.
Is a cold sore contagious before the blister appears?
Yes. The NHS states that cold sores are contagious from the first tingling or other early signs until they are completely healed.
Should I exfoliate a cold sore?
No. Scrubbing or picking can irritate the skin and may spread fluid from the blister. Let the area heal and follow healthcare advice.
Medical source: NHS guidance on cold sores.