HC Red No 9 and its salts are a cosmetic ingredient commonly used in hair dye products. This compound, also known as 6-[[3-Chloro-4-(methylamino)phenyl]imino]-4-methyl-3-oxocyclohexa-1,4-dien-1-yl]urea, imparts a vibrant red color to hair. It is a safe and effective ingredient that has been extensively tested for its safety and efficacy. HC Red No 9 and its salts are widely used in the cosmetic industry and are an important component of many hair dye formulations.
INCI name: 6-[[3-Chloro-4-(methylamino)phenyl]imino]-4-methyl-3-oxocyclohexa-1,4-dien-1-yl]urea Common terms: HC Red No 9, hair dye ingredient Nicknames: None
The ingredient [6-[[3-Chloro-4-(methylamino)phenyl]imino]-4-methyl-3-oxocyclohexa-1,4-dien-1-yl]urea (HC Red No 9) and its salts play the role of a colorant in hair dye products. It is used to impart a red shade to the hair.
HC Red No 9 is a synthetic organic compound that belongs to the azo dye family. It is commonly used as a hair dye ingredient due to its ability to impart a red color to hair. The physical properties of HC Red No 9 allow it to penetrate the hair shaft and bind to the keratin proteins present in hair. This binding is facilitated by the presence of urea groups in the molecule, which can form hydrogen bonds with the amino acid residues in keratin. Additionally, the presence of the chloro and methylamino groups in the molecule enhances its solubility in water and organic solvents, allowing it to be easily incorporated into hair dye formulations. Overall, the physical properties of HC Red No 9 make it an effective hair dye ingredient that can impart long-lasting color to hair.
As this ingredient is primarily used in hair dye products, there are no significant skincare benefits that users can expect from it.
HC Red No 9 is a synthetic organic compound that is commonly used as a hair dye ingredient. While it is generally considered safe for use in hair dye products, there are some potential side effects, sensitivities, and interactions that should be taken into consideration. One of the most common side effects of HC Red No 9 is skin irritation. This can manifest as redness, itching, or a rash on the scalp, neck, or face. In some cases, the irritation can be severe enough to cause blistering or swelling. Individuals with sensitive skin or a history of allergic reactions may be more prone to experiencing these side effects. Another potential side effect of HC Red No 9 is hair damage. This ingredient can cause hair to become dry, brittle, and prone to breakage. This is especially true if the hair dye product is left on for too long or used too frequently. To minimize the risk of hair damage, it is important to follow the instructions on the hair dye product carefully and to use a deep conditioning treatment after coloring. HC Red No 9 may also interact with other ingredients commonly found in hair dye products. For example, it may react with hydrogen peroxide, which is often used as a developer in hair dye products, to produce harmful byproducts. This can increase the risk of skin irritation and other adverse effects. Finally, it is worth noting that HC Red No 9 is not approved for use in all countries. In some regions, it has been banned or restricted due to concerns about its safety. Before using a hair dye product that contains HC Red No 9, it is important to check the ingredient list and to research any potential risks or restrictions in your area.
HC Red No 9 is a synthetic ingredient that is commonly used in hair dye products. It is derived from a chemical compound known as 6-[[3-Chloro-4-(methylamino)phenyl]imino]-4-methyl-3-oxocyclohexa-1,4-dien-1-yl]urea. The processing pathway for HC Red No 9 involves the synthesis of the chemical compound in a laboratory setting, followed by purification and formulation into hair dye products. The ingredient and its salts are used to provide a red color to hair and are often combined with other synthetic and natural ingredients to achieve the desired shade and effect.
According to the Environmental Working Group's Skin Deep database, HC Red No 9 has a moderate hazard rating of 5 out of 10. This rating is based on concerns regarding its potential to cause skin irritation and allergic reactions. Other sources, such as the European Chemicals Agency, have also identified HC Red No 9 as a potential skin sensitizer. However, it is important to note that the safety of HC Red No 9 and its salts in hair dye products is regulated by various government agencies, including the FDA in the United States and the European Union's Scientific Committee on Consumer Safety. These agencies have established maximum concentrations and usage restrictions for HC Red No 9 in hair dye products to ensure their safety for consumers.
The environmental impact of HC Red No 9 and its salts, when used as a substance in hair dye products, is a cause for concern. The production of this ingredient involves the use of various chemicals and processes that can have negative effects on the environment. Additionally, the disposal of unused hair dye products containing HC Red No 9 can lead to contamination of water sources and harm aquatic life. In terms of ethical sourcing practices, it is important to note that HC Red No 9 is a synthetic ingredient that is not derived from natural sources. Therefore, there are no ethical concerns related to its sourcing. However, it is important for manufacturers to ensure that the production of this ingredient does not involve the exploitation of workers or violate any labor laws. Additionally, manufacturers should ensure that the disposal of unused hair dye products containing HC Red No 9 does not harm communities or the environment.
In conclusion, HC Red No 9 is a synthetic ingredient commonly used in hair dye products to provide a red color. While it has been deemed safe for use by regulatory agencies, there are some potential negative effects such as skin irritation and allergic reactions. The ingredient is derived from petroleum and is not considered sustainable. However, there are alternative natural hair dye options available for those who are concerned about the safety and sustainability of synthetic ingredients.
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