This shape is set for life, although the hair follicle naturally undergoes structural changes every few years. Each hair grows for around 3 to 5 years before undergoing a resting phase of several months, and then, eventually, it falls out. During this resting phase, the hair follicle changes in structure, essentially shriveling up in the skin.
To start a new cycle of hair growth, the follicle grows back to its original shape. Curvy follicles always grow back curvy. But what regulates this remarkable re-establishment of curvature in the follicle remains a mystery.
In addition to the shape of the hair follicle, scientists believe that differences in cell behavior during hair fiber production contribute to hair shape. In straight hair, all the cells in the follicle act in a coordinated fashion, leading to even hair growth from the straight follicle.
These hairs are round. However, in curly hair, the way that the cells divide and produce certain proteins is asymmetrical and correlates with the bends in the curved follicle. This results in a hair fiber that has an elliptical shape, which allows it to curl. How exactly the different types of twists, kinks, and waves are created from this elliptical shape has eluded scientists so far.
But what controls these processes? Scientists know that our genes control hair shape. So far, the main driver to have been identified is a gene that produces a protein called trichohyalin TCHH , which strengthens the growing hair. The TCHH gene contains distinct variants called small nuclear polymorphisms, which are associated with different hair shapes in people across the globe. For example, in individuals of East Asian decent, variations in the gene for the receptor EDAR are associated with straight, coarse hair.
There are a handful of additional genes that have recently been identified and might play a role in regulating hair shape. Gently brush your hair as you dry it to detangle and help coax your strands into straightness. Never attempt to flat iron wet or damp hair! Flat ironing wet hair is less effective and can cause additional damage to your delicate strands. Once your hair is completely dry, split your hair into sections to make flat-ironing more manageable. The best way to do this is to work from the bottom layers of hair up.
Pin the top two-thirds of your mane up, and work on the underside first. Working from the bottom-most layer of hair, pull a small section taut and pull it through your straightener starting from the roots. Work with small enough sections that you only have to do two swipes of your flat iron. When the bottom layer of hair is straightened, unpin the rest of your hair and start straightening another section. Continue until each strand is smooth and shiny. For the best results, use a flat iron with long plates for quick straightening and frizz control.
Pro Tip : The ends of your hair tend to be the most delicate and prone to breakage. The ends are also thinner, requiring less heat to straighten. To help protect them from excess heat damage, stop mid-shaft when straightening your hair in sections. Then, at the very end, gather all of your hair and straighten the ends together.
Give your newly straightened locks a good once-over in the mirror. Did you miss any spots? Then, put the finishing touches on your new sleek style with a hydrating, frizz-fighting smoothing cream. Be sure each strand is completely dry before attempting to straighten. To avoid scorching your hair, start at the lowest setting, and increase the heat as needed to achieve the desired results. You used too many styling products.
Styling products are key to achieving your perfect look, but too many products can weigh down your hair. Focus on using only the products mentioned above that hydrate your strands and provide protection against heat. You tried straightening too large of sections.
Straightening thick, curly hair is best done in very small, 1-inch sections. For example, pick for fine or damaged hair, for medium hair, and for thick or coarse hair. Put the top half of your hair up into a temporary ponytail or bun so you can focus on the bottom layer first. Finally, set your hair with a finishing serum or spray to keep it smooth. To learn how to get your hair straightened at a salon, read on! Did this summary help you? Yes No.
Log in Social login does not work in incognito and private browsers. Please log in with your username or email to continue. No account yet? Create an account. Edit this Article. We use cookies to make wikiHow great. By using our site, you agree to our cookie policy. Cookie Settings. Learn why people trust wikiHow. Related Articles. Article Summary. Method 1. Start with clean hair for smooth, frizz-free results. Use a gentle shampoo made with hydrating ingredients like glycerin, aloe vera, and coconut oil.
Wet your hair with warm water, lather up, and rinse with warm water. Avoid shampoos with alcohols and sulfates since those tend to dry out hair and create frizz.
Your hair's natural oils can also help protect it from heat-styling damage. Method 2. A protein or bond building treatment preps your hair for heat styling. Hair straightening involves a lot of hot tools that can damage your hair. Using a strengthening treatment first can help you minimize that! Most strengthening treatments are applied like conditioner and rinsed out after several minutes.
Be sure to check! A big dose of hydration helps prevent frizz and minimize damage. Method 3. Use a microfiber towel or an old T-shirt to gently squeeze your hair. Squeeze and dab your wet hair with the towel or shirt to get out as much moisture out as possible. Be gentle as your go! Vigorously towel-drying your hair can cause breakage and create frizz. Method 4. A wide-toothed comb is the gentlest way to detangle wet hair.
Start combing at the ends of your hair and work your way slowly up the shaft until you get to the roots. Method 5. All rights reserved. This image may not be used by other entities without the express written consent of wikiHow, Inc.
The less you have to blow dry your hair, the better! If you have time to let your hair partially air-dry before heat styling it, take it! Air-drying your hair first shortens the blow-drying time and exposes your hair to less heat.
Method 6. Thermal protectants prevent hair damage caused by heat styling tools. If your hair is on the thicker side, go with a cream thermal protectant instead. Putting a barrier between your hair and damaging heat is really important. Method 7. Clip all the sections up and out of the way except the bottom one.
Working in sections allows you to concentrate on 1 area at a time so you can get it super smooth and completely dry before moving on. Gently coil and clip each section up on top of your head with plastic hair clips.
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