Why does the nipple sometimes collapses or caves in towards the bottle?
If the vent or ventilation valve does not function properly, or your baby’s sucking power is too strong to adequately vent the bottle, it may lead to unexpected accidents such as the nipple collapsing, the nipple caving in towards the bottle, or your baby’s lips and tongue getting caught.
The bubbles that appear in the bottle while your baby is drinking are a sure sign that the ventilation is working correctly.
In cases when bubbles do not appear in the bottle, the nipple collapses when your baby’s mouth is not attached to the nipple, the nipple caves in towards the bottle or is dislodged, please check the following points:
Is the ventilation valve clogged by milk residues, or anything else? If so, please wash the valve gently with your fingers.
Does the nipple match the baby’s suction power? If the baby’s suction power is strong and the nipple collapses, please use a nipple with the next highest milk flow after the currently used nipple.
For Flexible Nipple
Is the vent clogged with milk residues or anything else? If so, gently use a nipple brush to clean the residues of the vent area with our PIGEON liquid cleanser. Be careful not to pierce the vent area, as widening may lead to milk leakage.
Does the nipple match with the baby’s suction power? If the baby’s suction power is strong and the nipple collapses, please use a nipple with the next highest milk flow after the currently used nipple.