Final answer:
Protein conditioners are products designed to penetrate the cortex and reinforce the hair shaft from within while temporarily reconstructing the hair.
Step-by-step explanation:
Protein conditioners are products designed to penetrate the cortex and reinforce the hair shaft from within while temporarily reconstructing the hair. They contain proteins that help strengthen and repair damaged hair. When applied, these conditioners bind to the hair shaft, filling in gaps and providing structural support. Examples of protein conditioners include keratin-based products or those containing hydrolyzed proteins.