Lips get dry in winter and experts explain causes and care.

Experts say lips dry in winter because they lack oil glands and have a thinner outer layer, and they report that layering hydrating and occlusive ingredients plus sun protection helps reduce chapping.

Lips commonly become dry during winter as cold air, low humidity and indoor heating increase water loss. Experts explain this happens in part because the lips lack oil glands and have a much thinner outer layer than other skin. They are also exposed to UV, wind and saliva, which can further irritate the tissue. Dermatologists and facialists quoted in the article outline ingredient types and layering approaches that aim to restore moisture and lock it in. Key points: - The lips lack oil glands and consist of only three to five cellular layers compared with about 16 layers elsewhere, which makes them more vulnerable to water loss and damage. - Exposure to saliva, including frequent lip licking, can increase irritation because of acids in saliva, and fragranced or flavored lip products can contain irritating ingredients. - Experts report that effective topical care pairs hydrating ingredients (for example, hyaluronic acid) with nourishing and occlusive ingredients such as beeswax, shea butter, ceramides, vitamin E, petroleum jelly and plant oils to soften and seal the lips. - Matte lipsticks are reported to be more drying than creamy, oil-based formulas or tinted balms and oils, which often contain hydrating ingredients like squalane and shea butter. - Sun protection for the lips with an SPF around 30 and use of indoor humidifiers are reported as measures that can help limit winter drying. Summary: Dry, chapped lips are a common winter problem that often improve within a few weeks with topical care and protective measures. Experts reported that layered products, sun protection and environmental steps such as humidifiers are commonly recommended; if symptoms persist or worsen, medical evaluation may be advised.