Chemical treatment of hair with keratin have several names and come in various recipes, so it can be confusing and difficult to decipher the list of ingredients on product packaging. However, it is beneficial to know as a consumer what you are buying and using so you can make an informed decision when investing in treatments for hair keratin.
Keratin treatments are semi-permanent hair smoothing products through a process of stretch blow drying with high-temperature flat plate. The duration of the results varies from home and one treatment at a salon. The effects of a home treatment can last up to 30 days while a professional straightening can last several months.
Keratin is a fibrous protein found in hair, nails and skin of humans and animals. In keratin treatment products generally extracted from feathers, wool or animal hooves and their chemical structure is altered by a process in which water is involved, known as hydrolysis.
Perhaps one of the most important and most controversial in treatment of keratin ingredient is formaldehyde. It is a colorless, flammable gas penetrating produced naturally in the body (in small amounts) and is present in the air and in many foods and cosmetics, according to the Agency for Toxic Substances and Disease Registry. The Review Panel of Cosmetic Ingredients says that 0.2 percent or less is safe concentration of the chemical.
Several chemicals aldehyde family, which is a class of highly reactive chemical compounds (compounds of carbon, hydrogen and oxygen). The aldehyde resulting from oxidation of primary alcohols.
Chemical or relatives from chemical aldehydes can find in keratin treatments, even those considered “free formaldehyde” include acetaldehyde, ethanal, methanal, formalin and chemicals ending in aldehyde. These chemicals can cause irritation of eyes, nose and skin during treatment with keratin.