Afro-textured hair chart below is the most commonly used chart to help determine hair types: Different ethnic groups have observable differences in the structure, density, and growth rate of hair. With regard to structure, all human hair has the same basic chemical composition in terms of keratin protein content. Franbourg "et al." have found that Black hair may differ in the distribution of lipids throughout the hair shaft. Classical afro-textured hair has been found to be not as densely concentrated on the scalp as other follical types. Specifically, the average density of afro-textured hair was found to be approximately 190 hairs per
Artificial nails overlay acts as a false layer of nail, protecting the nail plate from splitting or becoming damaged. Typically, these methods require the assistance of a trained professional. Cheaper, less rigid tips that can be quickly glued at home are an option to those unwilling to enlist one. Another inexpensive option are stick-on nails, the durability of which ranges from one day to two weeks. Historically, artificial nails were common symbols of status all across the world: "The earliest experiments and resultant artificial nails used a monomer and polymer mix applied to the nail and extended over a supporting form. This