ʻO nā kāne wale nō nā primates i loaʻa ka lauoho maikaʻi, lōʻihi, a waihoʻoluʻu. ʻAʻole ia ma ka manawa: hōʻike ko lākou hele ʻana i kekahi mau pōmaikaʻi i loaʻa i ka wā hoʻomohala.

No laila, melanin pigments, i loko o ka lauoho a me ke kuleana o kona kala, hiki iā ia ke hoʻokaʻawale i nā meaʻawaʻawa a me nā metala kaumaha, i mea maikaʻi loa i nā kānaka e ʻai nui i ka iʻa (nā ʻano e hōʻiliʻili i nā mea ʻawaʻawa i ko lākou ola ʻana).1.

Eia kekahi, ʻo ka lauoho ʻeleʻele, kahi e pili ana i ka 90% o ka heluna kanaka o ka honua, pale i ka sunburn a me kāna melanin e kōkua i ka hoʻokumu ʻana i kahi kaulike hydrosaline kūpono (ʻo ia hoʻi ka hoʻoponopono maikaʻi ʻana o ka wai a me ka paʻakai i loko o ke kino. hui).

He aha ka pili o kēia kala?

No ka hoʻomaopopo ʻana i kahi i puka mai ai ke kala o ko mākou lauoho, pono mākou e nānā pono i kahi i puka mai ai ka lauoho: ʻo ka puʻupuʻu lauoho.

Hana ʻia kēia i ʻelua mau mea koʻikoʻi nui: nā keratinocytes a me ka nā melanocytes.

ʻO ka mea mua ka axis o ka lauoho ma hope o ka hana ʻana i kā lākou mea maka, keratin. ʻO nā melanocytes, liʻiliʻi ka nui, e kālele ana i ka hana ʻana i nā puaʻa ( waihoʻoluʻu e ka wehewehe) a lākou e lawe ai i nā keratinocytes o ka lauoho.2. He ʻokoʻa kēia mau puaʻa melanin mai kēlā me kēia kanaka i kekahi, no laila e hoʻoholo ko lākou haku i ke kala o ka lauoho o kēlā me kēia kanaka (blond, brown, chestnut, red…). ʻO ka hana, pono no ke kala ʻana i ka lauoho, e hoʻomau ʻia i ka wā o ka pōʻai maʻamau o ka lauoho, ʻo ia hoʻi i ka wā o kona ulu ʻana (1 cm i kēlā me kēia mahina no 3 a 5 mau makahiki ma muli o ke kāne.3) a hiki i kona degradation e alakaʻi i ka hāʻule. Lawe hou kekahi lauoho i kona wahi a hoʻomaka ka hana. A hiki i ka lā i ʻike ʻia ua paʻa ka mīkini.