Why is it important to use a conditioner-filler during a chemical relaxer retouch?

Using a conditioner-filler during a chemical relaxer retouch is essential for evening out the porosity of the hair. When hair is relaxed, it alters the internal structure and can lead to uneven porosity levels, especially when adding new relaxer to previously treated hair. This uneven porosity can affect how the hair absorbs the relaxer, potentially resulting in uneven processing and damage.

The conditioner-filler helps to create a more uniform texture along the hair shaft, allowing for a more even distribution of the chemicals used in the relaxing process. This results in a smoother and more manageable outcome, as well as reduced risk of over-processing certain areas of the hair that may be more porous. By addressing porosity, the conditioner-filler promotes healthier hair and improves the overall effectiveness of the chemical treatment.