You're not imagining thing. Lips really do get more chapped in the winter. As the air's moisture levels plummet, the water in your skin is drawn out, and the result is chapped lips. Here are some tips to keep your pucker soft and healthy.
1) It's a myth that some moisturizers leave your lips needing more balm, but there are some formulas that are better than others. Ingredients such as petrolatum, shea butter, hyaluronic acid, and dimethicone are all good at restoring moisture. The most important thing is to use a balm that's viscous, not waxy, so ingredients penetrate fissures. If you have chronic chapping, look for a lip treatment that contains ceramides, which help restore the skin barrier.
2) There are some ingredients that can make chapping worse. Anyone with eczema should make sure her balm doesn't contain lanolin. Since fragrance is the number one skin allergen, stay away from heavily scented or flavored balms; cinnamon can be particularly irritating. (Menthol actually soothes itching, though.) If you want to exfoliate your lips, use lip balm with a touch of alpha hydroxy acid, such as EI Solutions Lip Refine, rather than a grainy scrub or a washcloth.
3) Besides dehydration, the other main cause of chapped lips is a disruption in the pH balance of skin, which needs to be slightly acidic in moist areas like the mouth. Toothpastes, mouthwashes, and skin cleansers can alter this balance, so apply balm after you brush your teeth or wash your face. If you suspect your toothpaste may be part of the problem, consider one called Squiggle—it doesn't contain sodium laurel sulfate, and it makes a big difference with persistent chapping.