Answer :
Chemical texture services are processes used to alter the natural texture of hair using chemicals, and there are three main types of chemical texture services: permanent waves, relaxers, and keratin treatments.
Permanent waves involve the use of chemicals to break down the disulfide bonds in the hair, which are responsible for giving the hair its natural shape and texture. The hair is then wrapped around rods, and a neutralizing solution is applied to reform the disulfide bonds in their new shape. Relaxers are used to straighten curly or wavy hair. The process involves applying a chemical solution, typically a sodium hydroxide or ammonium thioglycolate-based product, to the hair to break down the disulfide bonds and loosen the curl pattern. Keratin treatments are a semi-permanent way to smooth and straighten hair.
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Three types of chemical texture services are permanent waving, relaxing, and curl reformation. Soil texture is classified using a textural triangle based on the percentages of sand, silt, and clay, which can impact soil properties and management concerns.
The three types of chemical texture services in cosmetology are permanent waving, relaxing, and curl reformation (also known as soft curl permanent). Permanent waving involves using chemicals to break and reform the disulfide bonds of the hair, adding wave or curl. Relaxing is the opposite, where the goal is to soften and relax naturally curly hair. Curl reformation is a combination of both processes, where tight curls are loosened into softer waves.
Textural class names for soils are determined based on the percentages of sand, silt, and clay present in the soil. These percentages are plotted on a textural triangle to provide the textural class, which can influence soil properties such as water retention, nutrients availability, and ease of cultivation. Certain textural classes may present management concerns, such as a higher tendency to compact or erode.
