Article last updated: October 15, 2024
Hc Red No. 10, also known by its chemical names 1-Amino-2-nitro-4-(2′,3′-dihydroxypropyl)amino-5-chlorobenzene and 1,4-bis-(2′,3′-dihydroxypropyl)amino-2-nitro-5-chlorobenzene, is a synthetic dye primarily used in hair dyeing products. This vibrant red dye is part of a class of colorants specifically formulated to impart rich, long-lasting color to hair.
The history of Hc Red No. 10 in cosmetics dates back to the mid-20th century when synthetic dyes began to replace natural colorants due to their superior stability and consistency. Over the years, advancements in chemical engineering have refined these dyes, making them safer and more effective for consumer use. Hc Red No. 10 emerged as a popular choice for hair dyes because of its ability to produce a vivid red hue that resists fading.
The production of Hc Red No. 10 involves a series of chemical reactions starting with the base compound, chlorobenzene. Through a process of nitration, amination, and subsequent reactions with dihydroxypropylamine, the final dye is synthesized. This intricate process ensures that the dye molecules are stable and capable of binding effectively to the hair shaft, providing a durable and vibrant color.
In this section, we will delve into the officially recognized cosmetic benefits and uses of Hc Red No. 10:
Hc Red No. 10 is primarily used as a hair dye ingredient. This means that its main function is to impart color to the hair. When included in hair dye formulations, it helps achieve a specific shade of red, contributing to the overall color palette that a product can offer. This is particularly beneficial for those looking to either enhance their natural hair color or completely change it to a vibrant red hue.
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).
Regarding individuals who are pregnant or breastfeeding, data and research on the topical usage of Hc Red No. 10 during pregnancy and breastfeeding are lacking. Therefore, it is recommended that they consult a healthcare professional for further advice.
While Hc Red No. 10 is generally considered safe for use in hair dyeing products, it is important to be aware of potential side effects from its topical application:
Adverse reactions to Hc Red No. 10 are relatively uncommon, but they can occur. To minimize the risk of experiencing side effects, it is advisable to conduct a patch test before widespread usage.
In terms of comedogenicity, Hc Red No. 10 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 and cause acne or breakouts, making it suitable for individuals prone to blemishes.
