In one sentence, describe what the following article is about: If you are currently using multiple skincare products and are experiencing problems, stop using all of them. Avoiding applying anything to your skin should help clear up any problems associated with application of these products within a few days. Try reintroducing each product, including creams, lotions, and makeup, one at a time. Give it a couple days before adding in a new product. Look for changes in your skin each time you re-introduce a new product (mentioned above). Whenever you want to try out a new cream, lotion, or makeup product, do a patch test first. Patch testing involves applying a small amount of the new product to a small patch of skin. Try patch testing on the inside of your wrist or forearm. Some areas of skin are more sensitive than others. For example, the underside of your forearm is more sensitive than the topside of your arm. Apply a small amount of product to your skin and don't wash it off. Leave creams, lotions, and makeup on for 24 to 48 hours. When testing cleansers or soaps, wash thoroughly, rinse, and then pat dry as you would with typical use. Look for signs of irritation, such as redness, itching, or rash. These signs would indicate that your skin is too sensitive for these products. Recognize common ingredients in products that cause adverse reactions with your skin. Some chemical compounds are more likely to cause problems (see above) and you may notice that several products that cause problems contain these same ingredients. For example, you may notice that your skin reacts to a variety of scented products, like lotions or perfumes. If this is the case, you may be sensitive to this particular scent or scented products in general. As a rule of thumb, people with sensitive skin should avoid using any scented products as they contain more ingredients that have the potential to cause reactions. Lotions with or without corticosteroids, such as hydrocortisone cream, can help reduce symptoms associated with sensitive skin. These can be particularly helpful to reduce itching and pain and may reduce redness associated with allergic contact dermatitis. Some studies have shown benefit of using topical corticosteroids with irritant contact dermatitis, but these studies are controversial. No randomized trials of corticosteroid use with irritant contact dermatitis exist, but a few small observational studies show no effect or slight improvements. It is possible to have both irritant and allergic contact dermatitis simultaneously. Therefore, using corticosteroids, which do improve the symptoms of allergic contact dermatitis may be useful. Lotions help to keep the skin moisturized and reduce water loss. Studies have shown reductions in scaling, dryness, redness, and itchiness with daily moisturizer use.
Summary: Identify products that adversely affect your skin. Do a patch test with new products. Avoid products that cause irritation. Try topical remedies.

In one sentence, describe what the following article is about: Like a muscle in your body, you will need to work on problem solving if you want to improve its strength and functioning over time. In other words, you will need to "exercise" regularly. Studies show that things like brain games can make you more mentally limber. There are any number of games or activities you can try. Word games work great. In a game like "Split Words," for example, you have to match word fragments to form words under a given theme like "philosophy." In the game, "Tower of Babel," you will need to memorize and then match words in a foreign language to the proper picture. Mathematical games will also put your problem solving to the test. Whether it be number or word problems, you will have to activate the parts of your brain that analyze information. For instance: "James is half as old now as he will be when he is 60 years older than he was six years before he was half as old as he is now. How old will James be when his age is twice what it was 10 years after he was half his current age?" Video games have been portrayed as "intellectually lazy" for a long time. However, new research shows that playing video games can improve parts of thinking like spatial perception, reasoning, and memory. Not all games are created equal, however. While first-person shooter games can improve your spatial reasoning, they are not as effective as others at developing problem solving skills. Play something that will force you to think strategically or analytically. Try a puzzle game like Tetris. Or, perhaps you would rather prefer a role-playing or strategy game. In that case, something like "Civilization" or "Sim-City" might suit you better. A hobby is another way that you can continue to improve your problem solving skills. Pick something that either involves active problem solving or activates appropriate parts of your brain. For example, start to learn a foreign language. Language functions in both hemispheres of the brain, so learning one will activate areas that control analysis as well as reasoning and problem solving. This is where problem solving Web design, software programming, jigsaw puzzles, Sudoku, and chess are also hobbies that will force you to think strategically and systematically. Any of these will help you improve your overall problem solving.
Summary:
Do regular mental exercise. Play video games. Take up a hobby.