What is the main factor that affects the curl formation process during a perm?

The condition and structure of the hair are the primary factors influencing the curl formation process during a perm. Hair that is healthy, elastic, and in good condition can better absorb the perm solution and hold the curl shape. The natural texture, porosity, density, and overall integrity of the hair strands significantly determine how well they will respond to the chemical processes involved in perming.

For instance, hair with a higher porosity tends to absorb solutions more quickly, which can affect how the curl forms and sets. Additionally, if the hair is damaged or overly processed, it may not hold the curl as effectively because the cuticle may be more open or the inner structure may be compromised. Thus, evaluating the hair's condition and structure is essential for determining the appropriate perm method and products to use for the desired outcome. This understanding ensures that the styling process yields the best results while minimizing damage.