Hiki i kekahi ke hoʻopili ʻia e ka ʻili maloʻo i kekahi manawa a i ʻole. Loaʻa i kekahi poʻe ka ʻili maloʻo ma muli o kā lākou moʻomeheu, hiki i kekahi poʻe ke ʻeha iā ia i kekahi manawa i ko lākou ola ma muli o nā kumu kūwaho. No ka mālama ʻana i ka ʻili maloʻo, he mea nui ia e ʻike i kona mau ʻano a ʻike i nā mea hana e pono ai e noho nani.

ʻO ka ʻili ka mea nui ākea i loko o ke kino o ke kanaka ma hope o ka hōʻike ʻana iā 16% o kona nui kaupaona. Pāʻani ia i nā kuleana koʻikoʻi i ke kino: pale ka ʻili iā mākou i nā huhū kūwaho (haʻalulu, haumia ...), kōkua i ke kino e hoʻoponopono i kona ana wela, komo i ka hana ʻana o ka wikamina D a me nā hormones a pale iā mākou iā lākou. nā maʻi ma o kāna ʻōnaehana pale pilikino (alakaʻi ʻia e keratinocytes). Hoʻonohonoho ʻia ko mākou ʻili i mau papa.

ʻO ka ʻili kahi ʻōnaehana paʻakikī i hoʻonohonoho ʻia i mau ʻāpana i hoʻopili ʻia.

• ʻO ka epidermis: pili ia i ka papa ʻili o ka ʻili i haku ʻia i ʻekolu ʻano o nā hunaola: keratinocytes (kahi hui o keratin a me nā lipids), nā melanocytes (nā huna e hoʻowali i ka ʻili) a me nā hunaola langherans (ʻōnaehana pale o ka ʻili). Pākuʻi ka epidermis i kahi kuleana pale no ka mea he semi-permeable. 
• Nā dermis, ka papa waena : Aia ia ma lalo o ka epidermis a kākoʻo iā ia. Māhele ʻia i ʻelua mau papa, ka papillary dermis a me ka reticular dermis waiwai i nā hopena aʻa a me nā olonā uila. Loaʻa kēia mau papa ʻelua i nā fibroblast (kahi e hoʻohua ai collagen) a me nā hunaola pale (histiocytes a me nā mast mast). 
• L'hypoderme, ka papa hohonu o ka ʻili : i hoʻopaʻa ʻia ma lalo o dermis, ʻo ka hypodermis kahi aʻa adipose, ʻo ia hoʻi i haku ʻia me ka momona. Hele nā ​​aʻalolo a me nā kīʻaha koko ma o ka hypodermis i ka dermis. ʻO ka hypodermis kahi wahi mālama momona, pale ia i nā iwi i ka hana ʻana ma ke ʻano he mea hoʻopūʻiwa, mālama ia i ka wela a hoʻohālikelike i ka silhouette.

Loaʻa i kēia mau papa like ʻole 70% ka wai, 27,5% protein, 2% momona a me 0,5% paʻakai paʻakai a me nā kumuwaiwai.

ʻO ka ʻili maloʻo he ʻano ʻili, e like me ka ʻaila a i ʻole ka ʻili hoʻohui. Hoʻohālikelike ʻia e ka paʻa, ke kani a me nā ʻōuli o ka ʻili i ʻike ʻia e like me ka ʻākala, ka ʻili ʻana a me ka ʻili puʻupuʻu. Loaʻa paha i ka poʻe me ka ʻili maloʻo ʻoi aku ka ʻelemakule o ka ʻili ma mua o nā mea ʻē aʻe (wrinkles hohonu). ʻO ke kumu nui o ka ʻili maloʻo ka ʻole o nā lipids: ʻaʻole hana nā sebaceous glands e hana i ka sebum lawa e hana i kahi kiʻi pale i ka ʻili. Hoʻopili pū ka paʻa a me ke kani ʻana o ka ʻili ke maloʻo ka ʻili, kapa ʻia kēia ka maloʻo punctual o ka ʻili. I ka nīnau, nā huhū kūwaho e like me ke anuanu, ka makani maloʻo, ka hoʻohaumia, ka lā, akā me ka nele o ka hydration kūloko a me waho. ʻO ka makahiki kekahi mea pilikia no ka maloʻo no ka mea ke hele a holoi ka manawa i ka ʻili o ka ʻili.

No laila pono e hānai ʻia ka ʻili maloʻo a hoʻomaʻemaʻe i ka hohonu. Hoʻomaka ka hydration o ka ʻili me kahi lako wai maikaʻi. ʻO ia ke kumu e ʻōlelo ʻia ai e inu i ka 1,5 a 2 lita o ka wai i kēlā me kēia lā. Eia kekahi, pono e hoʻohana ka poʻe me ka ʻili maloʻo i nā huahana mālama i kēlā me kēia lā i waiwai i nā mea i loaʻa i ka wai, nā mea hoʻomaʻemaʻe kūlohelohe (i kapa ʻia ʻo Natural Moisturizing Factors a i ʻole NMF) a me nā lipids e hānai iā ia. 

ʻO kahi mole mole hōkū i ka mālama ʻana i ka ʻili no kekahi mau makahiki, ʻo urea kekahi o nā Maʻemaʻe Moisturizing Kūlohelohe, nā mea i kapa ʻia ʻo "hygroscopic" agents. Aia kūlohelohe nā NMF i loko o nā kolee (nā hunaola i loko o ka ʻepekema) a he kuleana ko ka huki ʻana a me ka mālama ʻana i ka wai. Ma waho aʻe o ka urea, aia kekahi mau waikawa lactic, amino acid, carbohydrates a me nā ion ion (chloride, sodium a me potassium) i waena o nā NMF. 

ʻO ka Urea i ke kino e hele mai ka haki o nā protein i ke kino. Hana ʻia kēia mole e ke ake a hoʻopau ʻia i ka mimi. Loaʻa ka ʻUrea i ka mālama ʻana i ka ʻili hoʻoluʻu i synthesized i kēia manawa i ka hale hana mai ka amonia a me ka carbon dioxide. ʻAno maikaʻi ʻia e nā ʻano ʻili āpau, kaulana ʻo urea no kona keratolytic (exfoliates mālie i ka ʻili), antibacterial and moisturizing (ʻoluʻolu a mālama i ka wai) hana. Ma ka hoʻopaʻa ʻana i nā mole wai, mālama ʻo urea iā lākou i nā papa o ka epidermis. No laila kūpono kēia mole mole no ka ʻili me nā kalaka, ka ʻili prone, ʻili ʻili a me ka ʻili maloʻo.