When you’re pregnant, the hormone levels in your body change drastically to help develop your baby.
This new balance of hormones, particularly in estrogen, inevitably alters your hair growth cycle - During pregnancy, a woman’s hair tends to remain in a growing phase for longer than usual before entering resting and shedding phases.
Since your hair takes longer to come to the end of its growth cycle, you’ll find yourself retaining more hairs than usual, and noticing less hair fall. This results in fuller, thicker hair.
Once you’ve delivered your baby, your hormone levels naturally return to their pre-pregnancy levels.
This causes a drop in estrogen levels, and returning your hair to its usual phases of growth, resting, and shedding. A noticeable amount of your hair will begin the resting phase right away, and then proceed to shed several months later.
This is when postpartum hair loss becomes painfully noticeable.
Also known as telogen effluvium or excessive shedding, the condition causes women to lose more than the typical 100 hairs a day.
Furthermore, the hormone fluctuations in postpartum women causes even more strands of hair to enter the resting stage and shed just weeks later. Some women might find themselves losing as much as 300 hairs a day.