11. As part of their composition, all permanent haircolor products and lighteners contain H __ a. an acidic agent b. a decomposing agent c. an alkalizing agent d. a neutralizing agent

## Step 1<br />The problem is asking us to identify the type of agent that is always present in permanent hair color products and lighteners. The options provided are acidic agent, decomposing agent, alkalizing agent, and neutralizing agent.<br /><br />## Step 2<br />The process of hair coloring involves the use of an alkalizing agent. This is because the hair's natural pH is acidic, and the alkalizing agent helps to open up the hair cuticle, allowing the color to penetrate the hair shaft.<br /><br />## Step 3<br />The other options, acidic agent, decomposing agent, and neutralizing agent, are not typically found in permanent hair color products and lighteners. An acidic agent would not be effective in opening up the hair cuticle, a decomposing agent is not relevant to hair coloring, and a neutralizing agent is used after the coloring process to restore the hair's natural pH.