At NINGBO INNO PHARMCHEM CO.,LTD., we understand the critical importance of safety and regulatory compliance in the cosmetic industry. 8-hydroxyquinoline sulfate (CAS: 134-31-6), a yellow crystalline powder, is a chemical that has found applications in cosmetic formulations, particularly in hair dye products. While it offers beneficial properties, its usage is governed by specific regulations to ensure consumer safety. Understanding these guidelines is key for manufacturers and formulators.

The primary function of 8-hydroxyquinoline sulfate in cosmetic products, especially hair dyes, is to act as a stabilizer for hydrogen peroxide. Hydrogen peroxide is a common ingredient in hair colorants, responsible for lifting natural pigment and enabling dye penetration. 8-hydroxyquinoline sulfate helps to maintain the stability of hydrogen peroxide, ensuring consistent product performance. It also acts as a chelating agent, binding trace metals that could otherwise degrade the product.

Regulatory bodies worldwide have assessed the safety of 8-hydroxyquinoline sulfate for cosmetic use. In the European Union, for instance, it is listed in Annex III of the Cosmetics Directive and is permitted as a stabilizer for hydrogen peroxide in both rinse-off and non-rinse-off hair care products. However, strict concentration limits are imposed: a maximum of 0.3% for rinse-off products and 0.03% for non-rinse-off products. Similarly, Health Canada permits its use as a stabilizer for hydrogen peroxide in rinse-off and leave-on hair care products at concentrations of 0.3% and 0.03%, respectively. NINGBO INNO PHARMCHEM CO.,LTD. ensures that our product specifications align with these regulatory requirements, providing high-purity 8-hydroxyquinoline sulfate that can be responsibly incorporated into formulations.

Consumer awareness regarding hair dye ingredients is growing, with many seeking to understand potential health risks associated with certain chemicals. While some online resources highlight ingredients to avoid, it's important to differentiate between potentially harmful substances and those that are regulated for safe use at specified concentrations. The scientific assessments by bodies like the Cosmetic Ingredient Review (CIR) Expert Panel have concluded that 8-hydroxyquinoline sulfate is safe for use as a stabilizer for hydrogen peroxide in rinse-off hair care products. However, data was deemed insufficient for leave-on cosmetics at the time of certain reviews, emphasizing the importance of adhering to prescribed product types and concentrations.

For manufacturers, sourcing 8-hydroxyquinoline sulfate from a reputable 8-hydroxyquinoline sulfate supplier like NINGBO INNO PHARMCHEM CO.,LTD. is crucial. Our commitment to quality control, evidenced by our product’s high purity (≥99.0%) and detailed 8-hydroxyquinoline sulfate chemical properties, ensures that formulators have a reliable ingredient. When considering 8-hydroxyquinoline sulfate safety, adherence to maximum allowable content and appropriate product type usage is paramount. It's also important to note that some regions prohibit its use in specific product categories, such as sunscreen products and products for children under 3 years old.

In conclusion, 8-hydroxyquinoline sulfate is a functional ingredient in certain cosmetic products, primarily hair dyes, valued for its stabilizing properties. Manufacturers must carefully adhere to the established concentration limits and usage guidelines to ensure the safety and compliance of their formulations. NINGBO INNO PHARMCHEM CO.,LTD. provides the high-quality 8-hydroxyquinoline sulfate necessary for responsible cosmetic manufacturing.