The blue line on Pampers means the diaper is wet when it changes color.
The blue line on Pampers diapers is a wetness indicator, which changes color from yellow to blue when the diaper is wet, which signals it's time for a diaper change.
The blue line wetness indicator on Pampers is a feature that helps parents and caregivers quickly check if a baby or toddlers diaper needs changing, which is useful low lighting or when you can't see easily or feel if the diaper is soiled or wet.
The blue line on pampers is a chemical strip, which changes from yellow to blue in color when the chemical comes into contact with moisture from urine.
The Pampers blue line is a convenience feature for parents and other caregivers to easily and quickly identify a diaper that needs changing.
However sometimes the blue line on Pampers will change even when the diaper is only slightly wet and it does not always mean the diaper is ready to be changed.
It's okay to allow the Pampers diaper to fill up with pee as long as the diaper has not been on longer than 3 to 4 hours.
Some parents change their kids diaper after every pee, although that is not always necessary.
Diapers including Pampers diapers are very absorbent and can hold multiple wetting's and still keep the child dry and clean.
However poop diapers should always be changed as quickly as possible.
Some other diapers also have the wetness indicator as well.