In one sentence, describe what the following article is about:

It can be difficult to tell if the foundation shade is the right color while it's in the bottle. Most beauty supply stores have testers in different shades so you can compare them. To test, apply a little of 2 or 3 shades to different areas of your neck and then take a selfie with the flash on. Whichever one blends the best is the ones you want. Liquid foundations are best for dry skin, while powder or cream foundations are better for oily or combination skin. Blush should give a natural glow to your face, just like you have when you are exercising. Choose a shade that looks like the natural color your cheeks turn when you are flushed. If you don't have a problem with blemishes or dark circles under your eyes, you probably don't need to worry about concealer. However, if you want to be able to cover up little spots and adjust uneven colors in your skin, buy a little bottle of concealer matches your skin tone or that is a shade lighter. You can wear concealer with a foundation for a lot of coverage and evenness or you can wear either one without the other. Many people will just cover blemishes with concealer and gowithout bothering with foundation. It really depends on your skin and your preferences. Light, natural eyeshadows will brighten up your eyes without making it obvious you are wearing any makeup at all. For the most natural look as you ease into wearing makeup, go with shadows in shades of beige, tan, and brown. If you want a little more color, choose really pale shades of purple, green, or pink. The key is to use colors that don't stand out too much. Mascara is one of the most difficult cosmetics to keep neat all day long. If you sweat, get wet, cry, or rub your eyes because they are itchy, you'll likely mess up your mascara. To avoid the mess, go with the waterproof kind. For a natural look, chose brown mascara. You can go with lighter or darker shades of brown based on your hair color and skin tone, but you should avoid black and blue mascara when you are still learning how to create your personalized look. When you first starting wearing makeup, don't go for bright lip colors right away because they can easily look unnatural until you get the hang of it. Instead, keep your lips from drying out or getting chapped by using a simple lip balm, like ChapStick, or a shiny lip gloss. If you decide you want to use lipstick with color, there are several natural color options. Try to find something that is close to your real lip color. Inexpensive beauty products usually come with disposable applicators. However, you may want to invest in some good quality brushes so that you can become comfortable with using your own tools to apply your makeup. Check the labels of all your products to ensure they won't damage your skin. Before you buy any product, look for words like "oil-free," "won't clog pores," or "non-comedogenic" on the label. As you get older, breakouts may not be as much of a concern, but when you are a teen, you have to be vigilant about not putting anything on your skin that may clog your pores or irritate your skin. You can have fun experimenting with products like contouring makeup, eyeliners, lipsticks, and eyebrow kits. Search video tutorials, website, or wikiHow articles for information about applying more advanced kinds of makeup. You'll find helpful tips and instructions for every kind of skin tone, skin type, and beauty product.
Select a foundation shade that is very close to your natural skin color. Buy a blush in a color that will make you look like you just ran a mile. Have a concealer on hand for covering blemishes or dark undereye circles. Choose a nude or neutral-colored eyeshadow palette when you are new to makeup. Go with waterproof mascara so it doesn't smudge throughout the day. Use a moisture-rich lip gloss or lip balm. Splurge on a set of makeup brushes, if you are able. Prevent breakouts by buying non-comedogenic products. Expand your kit as you get more comfortable wearing makeup.