Article last updated: October 15, 2024
Hc Blue No. 11, also known by its chemical name 1-[(2′-Methoxyethyl)amino]-2-nitro-4-[di-(2′-hydroxyethyl)amino]benzene, is a synthetic compound primarily used as a hair dyeing agent in cosmetic products. This ingredient is part of a broader category of nitroaromatic amines, which are known for their vibrant and long-lasting color properties.
The history of Hc Blue No. 11 in cosmetics dates back to the mid-20th century when advancements in organic chemistry allowed for the synthesis of more stable and diverse colorants. Initially, the quest for more durable and varied hair dye options led researchers to explore nitroaromatic compounds, which eventually resulted in the development of Hc Blue No. 11. Its ability to provide a rich blue hue made it a popular choice among hair dye manufacturers.
The production of Hc Blue No. 11 involves a series of chemical reactions starting with the nitration of aniline derivatives. This process introduces nitro groups into the aromatic ring, which are then further modified through a series of steps involving alkylation and amination. The final product is a complex molecule that combines nitro, amino, and hydroxyethyl groups, giving it the desired properties for effective hair dyeing.
In this section, we will delve into the officially recognized cosmetic benefits and uses of Hc Blue No. 11:
Hc Blue No. 11 is primarily used as a hair dye ingredient. This means it is specifically formulated to impart color to the hair. When included in hair dye products, it helps achieve a desired shade of blue, contributing to the overall color palette that the product offers. This can be particularly useful for those looking to experiment with vibrant, unconventional hair colors or for those who want to enhance their natural hair color with a blue tint.
Note: the listed benefits above are exclusively based on the officially recognized and defined functions of the ingredient, as documented by the International Nomenclature of Cosmetic Ingredients (INCI).
When considering the use of Hc Blue No. 11 in cosmetic products, it is important to be aware of potential side effects and other considerations related to its topical application.
While Hc Blue No. 11 is generally considered safe for use in hair dyeing products, some individuals may experience adverse reactions. Potential side effects of topical application of this ingredient include:
Regarding individuals who are pregnant or breastfeeding, data and research on the topical usage of Hc Blue No. 11 during pregnancy and breastfeeding are lacking. Therefore, it is advisable for these individuals to consult a healthcare professional for further advice before using products containing this ingredient.
Adverse reactions to Hc Blue No. 11 are relatively uncommon, but they can occur. To minimize the risk of experiencing side effects, it is recommended to conduct a patch test before widespread usage of any product containing this ingredient.
In terms of comedogenicity, Hc Blue No. 11 has a rating of 1 on a scale of 0 to 5, where 0 is totally non-comedogenic and 5 is highly comedogenic. This low rating indicates that it is unlikely to clog pores or cause acne, making it suitable for individuals prone to blemishes or breakouts.
