Why Does Humid Weather Make Hair Frizzy?

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iStock

People with long hair know that even the most meticulously primped 'do is at the mercy of the weather. When the air is humid, hair can start to crimp, curl, or frizz the moment you step outside. Don't just curse the weather every time your hair takes on a mind of its own: the chemical makeup of your locks is also to blame.

A strand of hair is composed of bundles of a fibrous protein called keratin, and the shape and structure of your hair is determined by how these proteins bind together. Keratin molecules contain high amounts of the amino acid cysteine, which in turn contains sulfur atoms. When two keratin chains are nearby, the sulfur atoms from the neighboring molecules can react to form a strong disulfide bond. These bonds lock keratin molecules together and maintain their composition whether your hair is wet or dry. You have them to thank for much of your hair's durability and strength.

Hydrogen bonds are much more numerous in hair, and a lot more fickle. They form when a positively charged hydrogen molecule gets caught between two electronegative atoms in a strand of hair. Unlike disulfide bonds, the hydrogen bonds that form between these atoms are easily dissolved when wet. They break down and form anew each time you take a shower and dry your hair. They're also affected by the humidity in the air.

Instead of breaking down the hydrogen bonds in hair, the right level of humidity produces these bonds in greater numbers. More hydrogen molecules provide more opportunities for hydrogen bonds to form with keratin proteins. As more bonds form, proteins start to double back on themselves, resulting in curly or frizzy hair.

These effects are amplified in hair that's especially dry. Dry hair tends to soak up moisture in the air like a sponge, breaking the strand's outer shaft and making hair look frizzy. This is why hair that's been damaged by heat, chemical coloring, or an overuse of products is often more vulnerable to humid weather.

One way to fight the frizz is by moisturizing your hair before leaving the house. Conditioners, natural serums, and all-around gentler treatment can help cut down on dryness. If that doesn't work, we suggest avoiding tropical climates whenever you can.

A Simple Trick for Defrosting Your Windshield in Less Than 60 Seconds

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iStock

As beautiful as a winter snowfall can be, the white stuff is certainly not without its irritations—especially if you have to get into your car and go somewhere. As if shoveling a path to the driver’s door wasn’t enough, then you’ve got a frozen windshield with which to contend. Everyone has his or her own tricks for warming up a car in record time—including appropriately-named meteorologist Ken Weathers, who works at WATE in Knoxville, Tennessee.

A while back, Weathers shared a homemade trick for defrosting your windshield in less than 60 seconds: spray the glass with a simple solution of one part water and two parts rubbing alcohol. “The reason why this works,” according to Weathers, “is [that] rubbing alcohol has a freezing point of 128 degrees below freezing.”

Watch the spray in action below.

[h/t: Travel + Leisure]

Website Lets You Report Individuals Affected by Hurricane Michael to Search-and-Rescue Teams

Brendan Smialowski, AFP/Getty Images
Brendan Smialowski, AFP/Getty Images

When Hurricane Michael made landfall in Florida as a Category 4 hurricane on October 10, it became the strongest storm to hit the continental U.S. since 1992. Homes from Florida to Virginia have since been leveled and at least 11 people have died. With internet and phone lines down across the disaster zone, many people are desperate to know if their loved ones are safe—now there's an online tool that can help them.

If you're having trouble getting in touch with someone who was in the hurricane's path, you can report them through a new website set up by the Florida National Guard, First Coast News reports. The site asks for the person's name, gender, age, and address, as well as any life-threatening issues they may be facing, such as low oxygen or medication supplies. After you submit their information, the State Emergency Operations Center forwards it to the relevant local agency doing recovery work.

Michael moved back over the Atlantic as a post-tropical storm Friday morning following its rampage through the southeastern U.S. More than 1000 search-and-rescue workers have already been deployed in Florida alone, and the death toll is expected to rise as clean-up efforts continue across the region.

[h/t First Coast News]

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