From www.hairliciousinc.com -
While stretching your relaxers, it's important to keep the "Line of Demarcation", where the new growth and relaxed hair meet, strong to prevent any breakage.
This meeting point is extremely delicate and prone to breakage as the new growth comes in. In comparison to the relaxed hair, the new growth is much thicker, coarser and drier than your relaxed strands.
It is very easy for breakage to occur at the demarcation line because you are dealing with two different textures.
To prevent breakage at the Line of Demarcation, here are a few tips: (Go to full article)