Why does curly hair get less tangled than straight hair?

2007 ◽  
Vol 75 (8) ◽  
pp. 701-706
Author(s):  
Jean-Baptiste Masson
Keyword(s):  
Curly Hair ◽  
Straight Hair

A Curly Q: Is Frizz a Matter of Friction?

Perception ◽  
2021 ◽  
pp. 030100662110244
Author(s):  
Lisa Skedung ◽  
Elizabeth S. Collier ◽  
Kathryn L. Harris ◽  
Mark W. Rutland ◽  
Mara Applebaum ◽  
...  
Keyword(s):  
Elevated Temperature ◽  
Environmental Influences ◽  
Tactile Perception ◽  
Temperature And Humidity ◽  
Curly Hair ◽  
Straight Hair ◽  
Tactile Friction

The oft discussed and fretted over environmental influences on hair have led to a popular consensus which suggests that elevated temperature and humidity lead to frizzier, wilder hair. However, few attempts at actually quantifying these effects have been made. Although frizziness is usually perceived visually, here the influence of variations in temperature and humidity on the tactile perception and friction of curly and straight hair were investigated. It is shown that changes in humidity may disproportionately affect perceived frizziness of curly hair by touch due to concurrent changes in the tactile friction.

scholarly journals The biology and genetics of curly hair

2017 ◽  
Vol 26 (6) ◽  
pp. 483-490 ◽  
Author(s):  
Gillian E. Westgate ◽  
Rebecca S. Ginger ◽  
Martin R. Green
Keyword(s):  
Curly Hair

DLX3 Mutation in a New Family and Its Phenotypic Variations

2008 ◽  
Vol 87 (4) ◽  
pp. 354-357 ◽  
Author(s):  
S.-K. Lee ◽  
Z.H. Lee ◽  
S.-J. Lee ◽  
B.-D. Ahn ◽  
Y.-J. Kim ◽  
...  
Keyword(s):  
Gene Mutation ◽  
Autosomal Dominant ◽  
Mutational Analysis ◽  
Enamel Hypoplasia ◽  
Enamel Defects ◽  
Clinical Phenotypes ◽  
New Family ◽  
Dominant Disease ◽  
Curly Hair ◽  
Phenotypic Variations

Tricho-dento-osseous syndrome (TDO) is an autosomal-dominant disease characterized by curly hair at birth, enamel hypoplasia, taurodontism, and a thick cortical bone. A common DLX3 gene mutation (c.571_574delGGGG) has been identified in multiple families with variable clinical phenotypes. Recently, another DLX3 gene mutation (c.561_562delCT) was reported to cause amelogenesis imperfecta with taurodontism (AIHHT). We identified a Korean family with overlapping phenotypes of TDO and AIHHT. We performed mutational analysis to discover its genetic etiology. The identified mutation was c.561_562delCT mutation in the DLX3 gene. The enamel was hypomature and hypoplastic. The characteristic taurodontic features were not identified. Increased bone density or thickness could not be revealed by cephalometric, hand-wrist, and panoramic radiographs. Affected individuals reported that their nails were brittle, and they had curly hair at birth. This study clearly showed that the c.561_562delCT mutation had not only enamel defects, but also other clinical phenotypes resembling those of TDO syndrome.

A RECESSIVE CURLY-HAIR CHARACTER OF THE NORWAY RAT

1935 ◽  
Vol 26 (6) ◽  
pp. 252-254 ◽  
Author(s):  
HORACE W. FELDMAN
Keyword(s):  
Norway Rat ◽  
Curly Hair

scholarly journals Unique Hair Properties that Emerge from Combinations of Multiple Races

Cosmetics ◽  
2019 ◽  
Vol 6 (2) ◽  
pp. 36 ◽  
Author(s):  
Toshie Takahashi
Keyword(s):  
Mixed Race ◽  
Surface Damage ◽  
Unique Property ◽  
Human Populations ◽  
Severe Damage ◽  
Curly Hair ◽  
Definition Of ◽  
Hair Properties ◽  
Mixed Ethnicity ◽  
Hair Surface

The fusion of ethnicity in human populations is becoming increasingly common, so the conventional definition of ethnicity is going to become deficient. The aim of this study was to investigate the hair properties which emerge from combinations of multiple races. Hair fibers collected from mixed-race subjects were investigated and classifications of hair shape as well as measurements of thickness, ellipticity and surface damage were carried out. The results show that hair shapes varied widely: straight hair and very curly hair often existed together on the heads of individuals with mixed ethnicity. Curly hair tended to be thicker than loose wavy hair. As for damage to the hair surface, the hairs of mixed-race subjects showed a very unique property in that they were much more severely damaged near the root (the proximal end) than the hairs of monoracial subjects. The hair shape (curly or loose wavy) was not related to the level of damage. The severe damage near the proximal end is thought to be caused by entanglement, due to the presence of various curl phases. This study reports the unique characteristics of hairs of subjects with mixed ethnicity, which have never been noted in the previous studies on subjects with a monoracial background.

Trichonodosis in a patient with straight hair

1990 ◽  
Vol 23 (4) ◽  
pp. 756-757 ◽  
Author(s):  
Valerie Laing ◽  
Steven D. Resnick
Keyword(s):  
Straight Hair
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