How to Relieve Cold Sores: Practical Care

A cold sore can start as a familiar tingle, then quickly become a painful, visible blister just when you have plans. Knowing how to relieve cold sores early can make them more manageable, reduce discomfort and help protect the surrounding skin while they heal.

Cold sores are usually caused by the herpes simplex virus. They are common, contagious and often appear on or around the lips. Most clear up on their own within around 7 to 10 days, but practical treatment from the first sign of tingling can make a real difference to comfort and, for some people, healing time.

Act at the first tingle

Many people notice warning signs before a cold sore is visible: tingling, itching, burning or tightness around the lip. This is the point to act. Antiviral cold sore creams containing aciclovir are available from pharmacies and are designed to be used as soon as symptoms begin. Follow the instructions on the pack carefully and apply with clean hands or a clean applicator.

Starting early matters because the virus is active before the blister fully develops. Once a cold sore has formed a crust, an antiviral cream may still be worth using as directed, but it is less likely to have the same effect as it would at the tingle stage.

If you get cold sores regularly, it can be useful to keep treatment at home so you are not trying to find it after the sore has appeared. The Compeed Cold Sore Healing Patches Pack of 15 is one of those everyday pharmacy essentials that is best bought before you need it. Shop Now →

How to relieve cold sores when they are sore

The main aim is to ease pain, avoid cracking and give the area time to heal. A cool, damp flannel held gently against the lip for a few minutes can soothe burning or swelling. Compeed Cold Sore Healing Patches offer useful protection too — they can cover the sore, reduce rubbing and make eating, talking or being out and about feel more comfortable. Shop Now →

For pain, paracetamol or ibuprofen may help if you can take them safely. Always check the label, follow the recommended dose and avoid doubling up with other products that contain the same painkiller. Ibuprofen is not suitable for everyone, including some people with asthma, stomach ulcers, kidney problems or certain medical conditions. Ask a pharmacist if you are unsure which option is suitable for you.

Keep drinks cool and choose soft, mild foods if the sore makes eating uncomfortable. Acidic, salty, spicy or very hot foods can sting, particularly if the cold sore has cracked. Using a straw for drinks may help some people avoid irritating the area, although take care not to share it.

Protect dry or cracked skin

Cold sores can leave the lip feeling dry, tight and prone to splitting. A plain lip balm or petroleum jelly can help prevent cracking, especially in cold or windy weather. Apply it gently and avoid rubbing at the sore.

The Carmex Lip Balm Cherry 7.5g or Neutrogena Lip Care 4.8g are gentle everyday options to keep lips protected. Use a separate lip product while you have a cold sore and do not share it with anyone else. It is sensible to replace products that have come into direct contact with an active sore, such as lip balm or lipstick, once the episode is over. Shop Lip Care →

Keep the virus from spreading

Cold sores are most contagious from the first tingling sensation until they have completely healed. The risk is highest when blisters are present, but caution throughout the episode is the simplest approach.

Wash your hands after touching your face or applying treatment. Avoid picking, squeezing or peeling the blister or scab, as this can spread the virus, delay healing and increase the chance of a bacterial skin infection. Do not share cups, cutlery, towels, flannels, cosmetics or lip products.

Avoid kissing and oral sex while you have a cold sore, including when you first feel tingling. The virus can be passed to another person's mouth or genitals. Take particular care around babies. Newborns can become seriously unwell if they catch the virus, so avoid kissing a baby when you have an active cold sore and wash your hands carefully before caring for them.

Take care not to touch your eyes after touching a cold sore. If you wear contact lenses, wash and dry your hands thoroughly before handling them. Cold sore virus affecting the eye needs urgent medical attention.

Common triggers and how to reduce flare-ups

A cold sore can return because the virus remains in the body after the first infection. Not everyone has obvious triggers, but outbreaks are often linked to stress, tiredness, illness, strong sunlight, cold weather or a sore, damaged lip.

You cannot always prevent a cold sore, but looking after the basics may reduce how often they appear. Aim for regular sleep where possible, eat and drink consistently when you are unwell, and use a lip balm with SPF when spending time outdoors — the Malibu Assorted Lip Balm SPF30 3 Pack or Elizabeth Arden Eight Hour Nourishing Lip Balm SPF20 are both excellent choices. Sunlight is a common trigger for some people, including during a UK summer holiday or a day outside in winter. Shop SPF Lip Balms →

Try to notice your own pattern. If cold sores tend to happen during busy periods, after sun exposure or when you are run down, keeping Compeed Cold Sore Patches and protective lip care to hand can help you respond quickly.

When pharmacy treatment may not be enough

Most cold sores can be managed at home, but there are times when you should speak to a pharmacist, GP or another healthcare professional. They may advise a different treatment, such as prescription antiviral tablets, especially if outbreaks are frequent, severe or causing significant disruption.

Seek medical advice if a cold sore is very large, extremely painful, spreading, showing signs of infection or not starting to heal after around 10 days. Signs of infection can include increasing redness, warmth, swelling, pus or worsening pain.

You should also get advice promptly if you have a weakened immune system, for example because of a medical condition or treatment that affects immunity. People with eczema should be especially alert to rapidly spreading sore or blistered skin, as herpes infection can occasionally cause a more serious widespread condition.

Contact urgent medical services if you develop a painful red eye, eye irritation, sensitivity to light, blurred vision or a rash of blisters near the eye. Do not try to treat a possible eye infection with cold sore cream.

Cold sores in children and pregnancy

If a baby or young child has a suspected cold sore, ask a pharmacist, GP or NHS 111 for age-appropriate advice rather than using adult treatments without checking. Babies under six months and children who seem unwell need particular care.

Cold sores during pregnancy are usually not a cause for alarm, but it is still sensible to check with a pharmacist, midwife or GP before choosing a medicine, particularly if you are considering tablets or have a severe outbreak. The same applies if you are breastfeeding and the sore is close to an area that could come into contact with your baby.

A simple cold sore care routine

At the first tingle, start an appropriate antiviral cream as directed. Keep the area clean, use a cool compress if it feels sore and protect cracked skin with a plain lip balm — the Carmex Lip Balm Strawberry Tube 10g or Neutrogena Lip Care are both gentle choices. Use pain relief only if suitable for you, and avoid sharing anything that touches your mouth.

It can be tempting to keep checking or covering a cold sore with make-up, but less handling is usually better. Give it time, use straightforward pharmacy care and let the skin heal. If your cold sores are frequent or particularly difficult, a quick conversation with a pharmacist can help you find a plan that fits your needs. Shop Cold Sore & Lip Care Essentials →