A Single Strand
Each strand of hair is made up of the medulla, cortex, and cuticle. The innermost region, the medulla, is not always present and is an open, unstructured region. The highly structured and organized cortex, or middle layer of the hair, is the primary source of mechanical strength, water uptake. The cortex contains melanin, which colors the fiber based on the number, distribution and types of melanin granules.
The shape of the follicle determines the shape of the cortex, and the shape of the fiber is related to how straight or curly the hair is. Asian hair typically has a round fiber and is quite straight. Oval and irregularly shaped fibers are generally more wavy or even curly.The cuticle is the outer covering. Its complex structure slides as the hair swells and is covered with a single molecular layer of lipid that makes the hair repel water.
The diameter of human hair varies from 17 to 180 µm (0.00067 to 0.0071 in), depending on the color. Flaxen hair is the thinnest and black hair is the thickest.*
If it’s Dead, Does it Really Matter What I Do to it?
Absolutely. If we care about our hair, it doesn’t have to be dull, dry and lifeless. We can choose to have naturally beautiful and healthy hair. Caring for and protecting our scalp is essential for hair growth and beauty. Therefore, avoiding synthetic chemical dyes will prevent potential skin irritation and severe allergic reaction.
I Love Lustrous Henna
I've been meaning to write to you about your excellent product. I used Lustrous Henna this weekend and it was by far the best experience and result I've had from a henna-based product. The creamy formula was easy to apply and rinse out (unlike so many other henna products I've tried), and the color is vibrant. I achieved much better coverage of my grays than with any other product and I intend to keep on using it. Also, I'm going to bring your pamphlet to a local health food store and praise Lustrous Henna to the max! Thanks so much for a great product, Syed.
I found that with my hair I needed about 3/4 of a package for one application, and will use the remainder for touch-ups.
I hope this finds you well --- it was so pleasant chatting with you.
All the best,
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Author: L.J. O'Neal, freelance writer and researcher. L.J. is also a Lustrous Henna® user.