Hair type and texture are determined by several factors, including genetics. The African hair is more coiled and drier; Asian hair (Korean, Japanese) is straighter and thicker; and Caucasian hair is somewhere in between with around 45% having straight hair, 40% having wavy hair, and 15% having curly hair.
Main Text. Hair morphology is one of the more conspicuous features of human variation and is particularly diverse among people of European ancestry, for which around 45% of individuals have straight hair, 40% have wavy hair, and 15% have curly hair.
Type 1: Straight Hair
Type 1A hair is very straight and fine, with no hint of wave or curl. As it is so straight and fine, when the natural oils travel to the ends, it tends to cause it to look like oily hair. It is the rarest hair type and is common among women of Asian descent.
There are different types of naturally straight hair, from fine and thin to thick and coarse, with pros and cons for all the ways hair can be straight—and yes, we're even talking about hair that's straightened using styling tools and products.
Asian hair is also the straightest hair of any ethnic group. According to HealthGuidance, African American hair texture varies. Some people have thicker, coarser hair whereas others have finer hair. Many have a mixture of fine and coarse hair.
Hair type and texture are determined by several factors, including genetics. The African hair is more coiled and drier; Asian hair (Korean, Japanese) is straighter and thicker; and Caucasian hair is somewhere in between with around 45% having straight hair, 40% having wavy hair, and 15% having curly hair.
A general observation across experiments was that straight hair was perceived as younger, healthier, and more attractive than wavy hair and darker shades (medium copper and brown) were perceived more positively than blonde hair.
Permanent hair straightening treatments are a form of chemical processing for your hair. Depending on which method of processing you use, hair that's naturally curly or textured can be altered to lay flat and lose its curl.
Key Takeaways. You can permanently straighten your hair using a chemical solution that relaxes and breaks the protein bonds and restructures your hair. Japanese thermal reconditioning or Brazilian treatment are different ways to straighten your hair.
Thick (Coarse)
Thick or coarse hair texture is the strongest hair texture and typically feels coarse or thick to the touch. Coarse hair contains all three hair layers – the cortex, cuticle and medulla.
Yep, the poker-straight hair trend is surging for 2022, and it has got so popular that we're starting to forget what year it really is. While some of these looks have mostly stayed true to their roots, others have been brought back with a modern upgrade.
Genetic factors appear to play a major role in determining hair texture—straight, wavy, or curly—and the thickness of individual strands of hair. Studies suggest that different genes influence hair texture and thickness in people of different ethnic backgrounds.
The texture of a person's hair is determined by the shape of their hair follicles. Your follicle shape is partly determined by what genes you have. Your DNA might cause you to have perfectly round follicles. In this case you would have straight hair.
People with curly hair have asymmetrical follicles, which grow oval hair at a sharp angle that curls. People with straight hair have symmetrical follicles that grow round hair rather than oval hair.
Straight hair is perceived as being more formal and business like especially if cut above the shoulders while longer loose hair indicates a less professional manner in the male dominant business world. Short hair also means you don't like to waste time on your hair, leaving more time for other things.
Straight – hard to damage and tricky to curl – this is the oiliest and most resilient of all hair types. Wavy – fine wavy hair can be easily styled but medium and coarse waves can be more difficult to control – and frizziness can be an issue.
Permanent Hair Straightening: Keratin Treatment
Keratin or Brazilian blowout treatment is based on this science. A coat of chemicals with the main component as keratin is applied to your hair that will help give your hair the smooth, silky shine. The chemical is then fixed in your hair with the use of a straightener.
Straightened hair tends to be drier and brittle, so try to include deep conditioning once a week or every 10 days. A good tip to retain moisture after straightening your hair would be to use a good quality leave-in hair serum after you shampoo it.
And while the results did vary, in the end we found that 58% of the fellas agreed that curlier is sexier.
Most people of East Asian descent have thick, straight hair. This corresponds with a SNP (rs3827760) in the EDAR gene which is involved in hair follicle development. The ancestral allele of this SNP is the A-allele. The G-allele is the newly derived allele that leads to the thick, straight hair.
Hair curvature is greatly diverse among different ethnic populations. In contrast to African hair that is more flattened and often has twists and turns, Asian hair tends to be round in shape, straight, and more cylindrical. The low values of average curvature in Asian hair suggest a relatively straight hair.
Hair Type and Hair Loss
All things being equal, there's no evidence that there's any difference in the natural cycle of hair loss for people with either straight or curly hair. We all shed hair at various times in the hair growth cycle but having straight or curly hair doesn't have much of an impact either way.
An increase in androgens in females can actually change the shape of the hair follicle from round to flat and this can instigate a change in texture from straight to curly.