What should be done first with perm rods or rollers?

The first step with perm rods or rollers is to measure to the section. Measuring ensures that the hair is sectioned correctly, which is crucial for achieving uniform curls and ensuring that the perm is effective. Proper measurement allows the stylist to select the appropriate size of the rod or roller based on the hair's texture, length, and desired curl size. This careful preparation helps in creating a more controlled and aesthetically pleasing result in the final hairstyle.

The other steps, such as washing the hair, applying the perm solution, and brushing, are important but come after ensuring the sections are measured accurately. Washing the hair typically helps to remove any products that might interfere with the perm solution, while brushing helps in detangling, but these actions do not take precedence over the accuracy of measuring first, which sets the foundation for the entire perming process.