1. Putting lotion on your lips may help, but I would recommend using a lip balm instead. Lip balms tend to be more emollient and may better be suited. Especially since lotion may have an unpleasant scent. I notice that with lotion, since it is usually water-based, it dries up quickly, leaving a residue on your lips.
2. Any brand is fine if you're not picky. But there are some brands that are way better than others. Anything petrolatum-based tends to be cheaper, and acts more like a protectant than a moisturizer. These rely on you to hydrate yourself naturally by drinking water. If you want more moisture, get a natural lip balm. EOS, ChapStick Naturals are a few of my favorite, but tend to be a few bucks more expensive.
3. Your lips can still feel dry and chapped after applying lip balm for a few reasons.
Most people don't drink the recommended amount of water that they should. Since most people aren't "properly" hydrated, their lips will be one of the first signs to show it. Soda should not count as a source of hydration.
- Dead skin cells.
If you don't exfoliate your lips regularly (weekly), then there might be a layer of dead skin cells on your lips. When you have this, it takes longer, and it is harder for a lip balm to soak into your lips. Just take your toothbrush, wet it, and gently scrub your lips for a few seconds. You can also make a lip scrub by mixing a drop of honey with the same amount of sugar in it. You can either mix it with a drop of olive oil, OR simply wet your finger with water, run it over your lips, and then proceed to use the scrub. I mentioned olive oil because it is a natural moisturizer. The water option version is simply if you do not want to use olive oil. The water will just make the rubbing smoother since honey is thick. The honey acts as an antibacterial agent and a natural moisturizer. The sugar acts as an exfoliant which will help remove dead skin cells. After a few seconds of rubbing and scrubbing just rinse in the sink. All ingredients used are water soluble, so they should just melt and dissolve in the sink with no problem.
- Health condition.
Rarely, but still happens, dry lips can occur because of a health condition or if you're on any medications. If you tried a lot of things and are still suffering from dry lips, a visit to your doctor might be necessary. However, you would probably know if it is serious enough to see your doctor. If it is just dry, semi-chapped lips, try the steps above. If it were more severe to the point that your lips bleed, that would be a different story.