To avoid further bleeding of dyes, chlorine bleach should be neutralized with?

Neutralizing chlorine bleach with a reducing agent is essential in upholstery and fabric cleaning to mitigate any potential damage and further dye bleeding. Chlorine bleach, when applied, not only serves to disinfect and whiten but also has the capability to disrupt the chemical bonds that hold dyes in fabrics, leading to unwanted color changes. Using a reducing agent effectively neutralizes the chlorine's bleaching action, thus stopping the chemical reaction that would lead to additional dye bleeding.

This is particularly important in upholstery cleaning because many fabrics contain dyes that are susceptible to bleaching agents. By neutralizing bleach properly, you maintain the integrity and coloration of the fabric during the cleaning process.

Other methods, such as using a bonding agent, sealing spray, or emulsifier, do not specifically address the need to neutralize the effects of chlorine bleach. A bonding agent is more focused on creating or restoring bonds within the fabric or dye, while emulsifiers are used to blend or suspend oils and water. A sealing spray is typically used for providing a protective layer rather than addressing chemical actions occurring due to bleach. Thus, the use of a reducing agent is the most effective strategy in avoiding further dye bleeding when chlorine bleach is involved.