What effects does pre-perm lotion have on the hair structure?

Pre-perm lotion is designed to prepare the hair for the perming process by altering its structure and enhancing its ability to hold curls. It typically contains ingredients that help to soften the hair's cuticle, making it more pliable and receptive to the perming solution. This treatment can also help to protect the hair from damage during the chemical process by providing moisture and reducing friction. Overall, pre-perm lotion aids in achieving more uniform and long-lasting curls.