In this free video chemistry lesson from Salman Khan, we learn about the relative stability of amides, esters, anhydrides & acyl chlorides. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For all of the details, take a look.
In this free video chemistry lesson from Salman Khan, we learn how to work with carboxylic acid derivatives. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.
There are a couple of ways to even out stretch marks. First, if the stretch marks are newer and red, you can apply a variety of topical creams such as different kinds of retinol or cocoa butter. If the stretch marks are older, then laser surgery is needed. Laser surgery doesn't completely remove the stretch marks but it greatly reduces them.
You can’t change the size of your pores, but you can make them look a lot smaller. You Will Need
Don’t squeeze that blackhead! There’s a gentler way to get rid of it, and several steps you can take to prevent new ones from forming.
Unless you're a high-schooler building a nuclear fusion reactor, the hardest part of a science investigatory project often is coming up with a good idea. You want it to be cool yet feasible, novel but still useful.
Many of the beauty products you buy at drug and department stores are loaded with potentially toxic ingredients like parabens, while their active ingredients are made of things like glycolic, lactic, malic, and alpha hydroxy acids and retinoids, which are all derived from foods.
I've never had a black eye, but I was in a car accident that turned my entire ear dark purple a few years ago. Believe me; it was enough to get more than a few funny looks.
Summer is the best friend of poison ivy, oak, and sumac. When the weather is hot outside, people spend more time in the great outdoors, which means more people accidentally running face first into some poisonous shrubs, leaves, and vines. If that sounds like you, instead of suffering through the itch or spending money on expensive pharmaceutical solutions, try some of these home remedies out.
Minor mishaps occur all the time in the kitchen, whether you cut your finger while dicing an onion, scorched your hand in a grease fire, or burned the roof of your mouth because you were to eager to taste-test your killer pasta sauce.
PopSci's Gray Matter explains how to "hack light", a simple project that calls for glow sticks, diagonal cutters and Drano. Here's the science behind it:
You can blame your naggy mom, a crappy soap bar, and school or work stress for your acne. But ultimately, you should blame yourself. While it's true that your skin type (oily vs. dry vs. sensitive) and how your skin reacts to stress play a big part in blemishes, there is a nurture component to this argument.
You can get healthier looking skin in just three easy steps! Sarah shows you how... Cleanse For morning, Use an electronic facial cleansing brush; it will make a huge difference in your skin. It helps circulation and removes old makeup and dirt and can be used in the shower. For evening, use facial cleansing cloths.
