Chapped, dry lips: 5 causes to avoid and the best products to try now

If your lips seem to have a mind of their own and switch from super smooth to dry and cracked in what seems like hours, it's worth knowing there are a few key causes of dry lips – as well as a couple of bad habits that exacerbate them, which the majority of us are guilty of doing on a daily basis.

“One of the main differences between the skin on our lips and the rest of the body is that it is much thinner, typically consisting of 3-5 layers in total compared to as many as 16 on the face,” explains consultant dermatologist Dr Justine Kluk. "Our lips also lack the upper layer of epidermis, known as the stratum corneum, which serves a protective function, prevents dehydration and combats UV radiation.

“Another key difference is that our lips do not contain the glands found elsewhere on our skin," she continues. "They are therefore more likely to get dry and chapped as they don’t have the same natural oils to keep them soft and smooth. Cold, harsh temperatures, reduction in humidity due to central heating and repeated licking to moisten our lips can all contribute to drying them out.”

What causes chapped lips?

As well as the most common cause of chapped lips, which is dehydration, friction from talking, eating, drinking and facial expressions can contribute to skin damage and chapping, especially if they’re already vulnerable.

Do chapped lips mean you have an infection?

No, but if you have chapped lips it could increase your chances of getting an infection. This is because when the skin is cracked or broken it allows bacteria to enter the lower layers which can lead to an infection.

Why do chapped lips appear out of nowhere?

It’s the million dollar question and while it feels like they’ve all of a sudden become chapped and sore, there is usually a trigger. “Licking your lips can very quickly lead to dry and dehydrated lips,” says Rupert Kingston, MUA and co-founder of delilah. “While it may seem like a natural way to moisten your lips it can in fact make them drier as saliva evaporates pulling the moisture content from the lips. Saliva also contains digestive enzymes which can be very harsh on the delicate skin.”

Exposure to the elements is another trigger as whether it’s a change or drop in temperature, air conditioning, UV rays – they can all lead to chapping and dryness.

Vitamin deficiency could also be to blame and B2 (found in eggs and lean meat) is especially important as it’s essential for cell function and in turn, healthy lips. Zinc and iron deficiency have also been linked to dry lips, so load up on your greens to help keep things balanced.

You may want to rule out a medical condition too. “If your symptoms aren’t improving with lots of lip moisturiser, you may have something like eczema and should seek advice from a GP or dermatologist about the appropriateness of prescriptions and patch tests,” Dr Kluk tells us. Dry lips, particularly around the corners of the mouth can also be an indicator that your body is producing too much yeast and that you have an infection. If you have been suffering for a while, you might need to visit your GP in case you need a course of antibiotics to clear things up.

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