Teen’s shocking allergic reaction to hair dye patch test which she says saved her life.
​
One hour after the dye was tested the student's ears ballooned and started weeping. The next day the reaction was even worse, and she was left unable to move her neck.  Doctors told Sophie Warren she would have DIED if the dye had been put all over her head.

Click on the photo below for the full story.

What are the reactions to PPD allergy?​

Reaction caused by the use of hair dye in mild cases usually only involves dermatitis to the upper eyelids or the rims of the ears. In more severe cases, there may be marked reddening and swelling of the scalp and the face. The eyelids may completely close and the allergic contact dermatitis reaction may become widespread.

Severe allergy to PPD can result in contact urticaria and rarely, anaphylaxis.

The Effects of Hair Parting on Social Appraisal
and Personal Development
By Catherine Walter and John Walter
 
Surprisingly, a hair part has a crucial impact on interpersonal relationships by affecting immediate character appraisal, perceived personality traits, self-perception and self-development!

The Hair Part Theory was developed by a brother-sister team trained, respectively, in nuclear physics and cultural anthropology. Their revolutionary theory is now being made available to the general public, so that all individuals can have more control over automatic and mostly unconscious assessments made of their personalities by others. John and Catherine Walter also produce the True Mirror®, a mirror that does not reverse the viewer’s image and which therefore allows an accurate self-assessment.

A left hair part draws unconscious attention to the activities that are controlled by the left hemisphere of the brain, i.e. activities traditionally attributed to masculinity. A right hair part draws unconscious attention to the activities that are controlled by the right hemisphere of the brain, i.e. activities traditionally attributed to femininity.

A man who parts his hair on the right, and who is striving for positive assessment in a traditionally male role is at risk for having difficulties in interpersonal relationships, since he is sending a mixed, subconscious message by emphasizing the activities of the brain traditionally attributed to femininity.

A woman who parts her hair on the left, and who is striving for positive assessment in a traditionally male role (for example, in business or politics) will be taken more seriously than a woman with a right part, who is emphasizing mental processes that are traditionally attributed to femininity.

Use the links below to access the full theory paper, as well as an analysis of United States Presidents, Vice Presidents, state Governors (in office 9/98), and the Senators and Representatives of the 105th Congress according to their hair part choice, with an emphasis on those who part their hair on the right.

Additionally, a list of famous men who wear a right part is included, since these men illustrate some of the surprising ways that a right hair part affects personality and perception of personality.

The Hair Part Theory (c)1998  
PDF version – Complete data included

The Hair Part Theory
Web Version

Lincoln - Left or Right?

Hair Part Theory – Discover the Difference!  

RadioLab:  Mirror, Mirror

The Atlantic: The Mirror of Dorian Gray

I was hanging out with a few friends recently and we were talking about hair (of course we were) and someone mentioned that there wouldn't be any more blondes in a few hundred years.   I'd never heard this before so I thought I'd research their comment.   

The Claim:  A study undertaken by the World Health Organization concluded that natural blondes are likely to be extinct within 200 years.

Well, this is completely FALSE.  

The problem is that blonde hair is caused by a recessive gene.

In order for a child to have blonde hair, it must have the gene on both sides of the family in the grandparents' generation.  

The researchers also believe that so-called bottle blondes may be to blame for the demise of their natural rivals.
 
They suggest that dyed-blondes are more attractive to men who choose them as partners over true blondes.
 
But Jonathan Rees, professor of dermatology at the University of Edinburgh said it was unlikely blondes would die out completely.  "Genes don't die out unless there is a disadvantage of having that gene or by chance. They don't disappear," he told BBC News Online.  "The only reason blondes would disappear is if having the gene was a disadvantage and I do not think that is the case.
 
"The frequency of blondes may drop but they won't disappear."  
[source: BBC News]

(Source: Science: HowStuffWorks)

SNOPES.com also debunked this claim.  

And what about redheads?  Are they going extinct?

​Humid air causes hydrogen bonds to form between water molecules and the proteins in your hair, triggering curls and frizz
 
By Joseph Stromberg  - smithsonian.com
 
If you have long hair, you probably don’t need to look up a weather report to get an idea of how much humidity’s in the air: You can simply grab a fistful of hair and see how it feels. Human hair is extremely sensitive to humidity—so much that some hygrometers (devices that indicate humidity) use a hair as the measuring mechanism, because it changes in length based on the amount of moisture in the air.
 
Straight hair goes wavy. If you have curly hair, humidity turns it frizzy or even curlier. Taming the frizz has become a mega industry, with different hair smoothing serums promising to “transform” and nourish hair “without weighing hair down.” But just why does humidity have this strange effect on human hair?
 
Hair’s chemical structure, it turns out, makes it unusually susceptible to changes in the amount of hydrogen present in the air, which is directly linked to humidity.  Most of a hair’s bulk is made up of bundles of long keratin proteins, represented as the middle layer of black dots tightly packed together in the cross-section below.

​Bundles of keratin proteins (the middle layer of black dots above) are susceptible to changing shape on a humid day. Image from Gray’s Anatomy

These keratin proteins can be chemically bonded together in two different ways. Molecules on neighboring keratin strands can form a disulfide bond, in which two sulfur atoms are covalently bonded together. This type of bond is permanent—it’s responsible for the hair’s strength—and isn’t affected by the level of humidity in the air.
 
But the other type of connection that can form between adjacent keratin proteins, a hydrogen bond, is much weaker and temporary, with hydrogen bonds breaking and new ones forming each time your hair gets wet and dries again. (This is the reason why, if your hair dries in one shape, it tends to remain in roughly that same shape over time.)
 
Hydrogen bonds occur when molecules on neighboring keratin strands each form a weak attraction with the same water molecule, thereby indirectly bonding the two keratin proteins together. Because humid air has much higher numbers of water molecules than dry air, a given strand of hair can form much higher numbers of hydrogen bonds on a humid day. When many such bonds are formed between the keratin proteins in a strand of hair, it causes the hair to fold back on itself at the molecular level at a greater rate.
 
On the macro level, this means that naturally curly hair as a whole becomes curlier or frizzier due to humidity. As an analogy, imagine the metal coil of a spring. If you straighten and dry your hair, it’ll be like the metal spring, completely straightened out into a rod. But if it’s a humid day, and your hair is prone to curling, water molecules will steadily be absorbed and incorporated into hydrogen bonds, inevitably pulling the metal rod back into a coiled shape.