Though this type of acid may cause you to have a reaction if your skin is sensitive, it's the best over-the-counter cleaner for whiteheads and blackheads. It treats blackheads by reducing swelling and unclogging blocked pores. Try looking for a foaming cleanser with this product in it. You can also apply it as a cream, gel, or ointment. Because your skin is sensitive, test it on a small area of your face first. If you break out or itch, move on to another product. Salicylic acid may make your skin more dry or irritated, especially when you first start using it. Try using it only in small amounts, and increase the amount you use as your skin adjusts. Use the cleanser once or twice a day. Use your cleanser with salicylic acid to cleanse your face while you're having a break out. Splash water on your face first, then rub the cleanser in. You can use a washcloth if you do it gently but don't scrub too hard. Wash the soap off, and dry your face off. Another natural cure some people have had luck with is a raw honey-cinnamon mixture. Honey and cinnamon both have natural antibacterial properties, so they may help kill off skin bacteria responsible for breakouts. Simply combine equal parts of raw honey and cinnamon powder or a few drops of cinnamon oil. Gently rub it onto your face. Once you've thoroughly rubbed it in, cover it with a light cotton strip or a thick paper towel. Leave it for about 5 minutes before pulling the strip off and rinsing. The honey will help clear bacteria, as well as act as light glue that pulls up blackheads. Cinnamon encourages a healthy glow, as it increases blood flow to your face. This method is a common one to help reduce the appearance of blackheads. Simply pour boiling water into a bowl. Lay a towel over your head and the bowl, so the steam is concentrated on your face for about 10 minutes. The steam will soften up the dirt in the blackheads, so gently wash your face with warm water after you steam it. You can add an antibacterial essential oil to help add punch to the steam cleanser. Lavender, thyme, peppermint, and calendula have antiseptic properties. Though it may seem counter-intuitive since you're trying to avoid clogged pores, moisturizers keep your skin hydrated. The key is to skip ones with oil in them, as that can clog your pores. Look for labels that say "non-comedogenic," "oil-free," or "non-acnegenic."

Summary: Try salicylic acid. Use a honey-cinnamon cleanser. Try steam. Use a moisturizer.

You can perform certain operations on a matrix to transform it while keeping it equivalent to the original. These are called elementary operations. To solve a 2x3 matrix, for example, you use elementary row operations to transform the matrix into a triangular one. Elementary operations include: swapping two rows. multiplying a row by a number different from zero. multiplying one row and then adding to another row. You want to produce zero in your second row, so multiply in a way that lets you do that. For example, say you have a matrix that looks like this:You can keep the first row and use it to produce zero in the second row. To do that, first multiply the second row by two, as follows: In order to get to zero for the first row, you may need to multiply again, using the same principle. In the example above, multiply the second row by -1, as follows:When you complete the multiplication, your new matrix looks like this: Next, add the first and second rows to produce zero in the first column of the second row. In the example above, add the two rows together as follows: At this point, you have a triangular matrix. You can use that matrix to get a new linear system. The first column corresponds to the unknown x, and the second column corresponds to the unknown y. The third column corresponds to the free member of an equation. For the example above, your new system would therefore look like this: Using your new system, determine which variable can be determined easily, and solve for it. In the example above, you'll want to "backsolve" moving from the last equation to the first when solving for your unknowns. The second equation gives you an easy solution for y; since the x has been removed, you can see that y = 2. Once you've determined one of the variables, you can substitute its value into the other equation to solve for the other variable. In the example above, replace the y with a 2 in the first equation to solve for x as follows:

Summary: Understand elementary operations. Multiply the second row by a non-zero number. Multiply again. Add the first row to the second row. Write down the new linear system for the triangular matrix. Solve for one of the variables. Substitute to solve for the second variable.

After getting out of the shower, quickly dry yourself by rubbing the towel on the very wet areas of your body. These areas include but aren't limited to your hair, torso, and arms. You want to be moderately dry before wrapping a towel around you, so you can actively do things and move around without tracking water all over the place. Use a bath towel large enough to completely cover and wrap around your body. A typical-sized towel should be appropriate for most individuals, but for larger individuals, you might want to consider using a larger towel or a beach towel. Women will most likely want to use a towel long enough to cover them from their upper chest to their mid thighs. Men may prefer to use a towel long enough to cover the area from their waist down to their knees. Hold the towel horizontally, grasping the two top corners with your right and left hand. Place the towel behind you, around your back. The two ends of the towel should now be in front of you, while the middle portion of the towel is pressed against your back. Women should have the towel positioned higher on their back, so the horizontal top edge of the towel is at the height of their armpits. Men should have the towel positioned lower, at their waist, so the horizontal top edge of the towel is just above their buttocks. Using either your left or right hand (it doesn't matter which hand you use), bring one corner of the towel across the front of your body to the opposite side. For example, bring the left corner of the towel across the front of your body to the right side. Make sure the towel is tightly pulled across your body. Hold this corner in position with your hand. Then, while your hand is holding the first corner of the towel, bring the other corner of the towel across the front of your body to the opposite side. For women, this wrapping will be across your chest, above your bust and parallel with your armpits. For men, this wrapping will be across your waist, parallel with your hips. Once both corners are brought to the opposite side of your body, tuck the second corner into the top horizontal edge of the towel wrapping, fitting the corner between your body and the towel. Try tucking in a large enough portion of the towel corner so the towel is more secure. The more taut the original towel wrapping is, the more secure your towel wrap will be. Consider twisting the second corner and tucking the twisted portion into the top edge of the towel. This twisted portion may secure the towel even further. If the towel keeps coming undone, consider using a safety pin to keep the corner of the towel tightly tucked and in place.
Summary: Dry your body. Select your towel. Position your towel. Wrap the towel around your body. Secure the towel wrap.