What can lead to hair losing moisture and separating from the papilla?

The catagen phase is a critical part of the hair growth cycle. It is a transitional phase that occurs after the anagen (growth) phase and before the telogen (resting) phase. During this period, the hair follicle shrinks and detaches from the papilla, which is the structure at the base of the hair follicle that supplies nutrients and signals hair growth.

As the hair transitions into the catagen phase, it becomes more susceptible to losing moisture. The detachment from the papilla signifies that the hair is no longer receiving the same level of nutrients and hydration it did during the anagen phase. This can result in dry, brittle hair that is more prone to breakage. Understanding the hair growth cycle is essential for effective hair care and maintaining the overall health and moisture retention of natural hair.

Other options, while relevant to hair health, do not directly explain the physiological changes in the hair cycle that lead to moisture loss and separation from the papilla in the same way the catagen phase does.