ʻO nā mea mālama mālama lāʻau maʻamau o ka hormone ulu he phenol, cresol a pēlā aku. ʻO Phenol kahi mālama lāʻau maʻamau. Ua hōʻike ʻia kahi noiʻi a ka United States Environmental Protection Agency (EPA) e hiki i ka hoʻolaha ʻana i ka phenol ke hoʻolohi i ka ulu ʻana o ka pēpē. Aia kekahi mau hihia o ka hoʻohana ʻana i ka hale maʻi i nā disinfectants phenol i hopena i ka maʻi o ka hypobilirubinemia pēpē a me kekahi make fetal, no laila ua manaʻo ʻia ka phenol i nā mea ʻawaʻawa i nā pēpē a i ʻole nā ​​​​feses.

Ma muli o ka ʻona o ka phenol, ua hoʻoponopono koʻikoʻi ka FDA, EU a me Kina i ka palena kiʻekiʻe o ka hoʻohui ʻana i nā preservatives. Ua ʻōlelo ʻo FDA e mālama ʻia ka neʻe ʻana o ka phenol i loko o 0.3%, akā wehewehe pū ʻo FDA i nā hopena koʻikoʻi i hōʻike ʻia i kekahi mau maʻi a hiki i ka ʻae ʻia, a pono e pale ʻia ka hoʻohana lōʻihi. ʻO ka hoʻomau ʻana o nā haʻahaʻa haʻahaʻa i ʻae ʻia e pale ʻia no nā lā ʻoi aku ma mua o 120 mau lā. ʻO ia hoʻi, ʻoiai he haʻahaʻa loa ka neʻe ʻana o ka phenol i hoʻohui ʻia i ka hormone ulu, ʻike pinepine ʻia kona mau hopena ʻino ma hope o ka hoʻohana lōʻihi ʻana, a ʻo nā hihia e alakaʻi i ka maʻi hiki ke loaʻa ma nā wahi āpau. Ma hope o nā mea a pau, he bacteriostatic nā preservatives e ko lākou ʻawaʻawa, a inā haʻahaʻa loa ka ʻona, ʻaʻole pono ke kumu o ka bacteriostatic.

Ma muli o nā koi ʻenehana kiʻekiʻe o ka ʻoihana wai hormone ulu, ʻo ka hapa nui o nā mea hana wai hormone ulu e hiki ke hoʻohui i nā preservatives e hōʻoia ai ʻaʻole e hōʻemi ʻia ka hormone ulu ma muli o ka ʻenehana hana liʻiliʻi, akā ʻo ka hoʻokele wā lōʻihi o nā preservatives e lawe mai i ka pōʻino o nā mea ʻawaʻawa. ʻo ke kikowaena o nā keiki, ke akepaʻa, ka puʻupaʻa a me nā mea kino ʻē aʻe. No laila, no nā poʻe maʻi me ka hoʻohana lōʻihi o ka hormone ulu, pono e koho ʻia ka hormone ulu me ka ʻole o ka mālama ʻana i ka hiki, i mea e pale pono ai i nā hopena ʻino o nā preservatives a hoʻohana i ka hoʻohana lōʻihi i ka palekana no nā keiki.