Njengoko imfuno yokukhusela ilanga esebenzayo iqhubeka ikhula, imboni yezithambiso iye yabona ukuguquka okuphawulekayo kwizithako ezisetyenziswa kwi-sunscreens yemichiza. Eli nqaku liphonononga uhambo lwenkqubela phambili yesithako kwiikhemikhali ze-sunscreens, ezibonisa impembelelo yokuguqula kwimveliso yokukhusela ilanga yanamhlanje.
Ukuphononongwa kweSithako sokuqala:
Kwinqanaba lokuqala lokwenziwa kwe-sunscreen formulations, izithako zendalo ezifana nezicatshulwa zezityalo, iiminerali, kunye neoli zazisetyenziswa ngokuqhelekileyo ukubonelela ngokukhuseleka kwelanga. Ngelixa ezi zithako zibonelela ngenqanaba elithile lokuthintela imitha ye-UV, ukusebenza kwazo bekuthozamile kwaye zingenazo iziphumo ezinqwenelekayo ezihlala ixesha elide.
Ukwaziswa kwezihluzo ze-Organic:
Ukuphumelela kwiikhemikhali ze-sunscreens zeza kunye nokuqaliswa kwezihluzo eziphilayo, ezaziwa ngokuba zi-UV absorbers. Phakathi kwinkulungwane yama-20, izazinzulu zaqalisa ukuhlola imichiza ekwaziyo ukufunxa imitha yeUV. I-Benzyl salicylate yavela njengovulindlela kule ndawo, ibonelela ngokhuseleko oluphakathi lwe-UV. Nangona kunjalo, uphando olongezelelweyo lwaluyimfuneko ukuphucula ukusebenza kwayo.
Ukuqhubela phambili kuKhuseleko lwe-UVB:
Ukufunyaniswa kwe-para-aminobenzoic acid (PABA) kwiminyaka ye-1940 kwaphawula isiganeko esibalulekileyo ekukhuselweni kwelanga. I-PABA yaba sesona sithako siphambili kwi-sunscreens, ngokufanelekileyo ukufunxa imitha ye-UVB enoxanduva lokutshiswa lilanga. Ngaphandle kokusebenza kwayo, i-PABA yayinezithintelo, ezifana nokucaphuka kwesikhumba kunye nokwaliwa, okubangela imfuno yezinye izithako.
Ukhuseleko olubanzi lweSpectrum:
Njengoko ulwazi lwezenzululwazi lusanda, ugqaliselo lwatshintshela ekuphuhliseni izithako ezinokukhusela kuzo zombini imitha ye-UVB kunye ne-UVA. Kwiminyaka ye-1980, i-avobenzone yavela njengesihluzo esisebenzayo se-UVA, encedisa ukhuseleko olukhoyo lwe-UVB olunikezelwa yi-PABA-based sunscreens. Noko ke, ukuzinza kwe-avobenzone phantsi kokukhanya kwelanga kwakulucelomngeni, nto leyo eyakhokelela ekubeni kubekho izinto ezintsha.
Ukufota kunye noKhuseleko lwe-UVA olomeleziweyo:
Ukujongana nokungazinzi kwezihluzi ze-UVA zangaphambili, abaphandi bagxile ekuphuculeni ukufota kunye nokhuseleko olubanzi. Izithako ezifana ne-octocrylene kunye ne-bemotrizinol zaphuhliswa, ezinika uzinzo olongezelelweyo kunye nokhuseleko oluphezulu lwe-UVA. Ezi nkqubela ziphucule kakhulu ukusebenza kunye nokuthembeka kwe-sunscreens.
Izihluzi ze-Organic UVA:
Kwiminyaka yakutshanje, izihluzi ze-UVA eziphilayo ziye zafumana ukuduma ngenxa yokhuseleko lwazo olukhethekileyo lwe-UVA kunye nozinzo oluphuculweyo. Iikhompawundi ezifana ne-Mexoryl SX, i-Mexoryl XL, kunye ne-Tinosorb S ziye zaguqula i-sunscreens, zibonelela ngokhuseleko lwe-UVA oluphezulu. Ezi zithako ziye zaba yinto ebalulekileyo kwimizobo yokukhusela ilanga yanamhlanje.
IiNdlela eziTshayo zokuqulunqa:
Ngokuhambisana nokuphuculwa kwezithako, iindlela ezintsha zokuyila zidlale indima ebalulekileyo ekwandiseni ukusebenza kwezithambiso zelanga. I-Nanotechnology iye yavula indlela yamasuntswana e-micronized, ebonelela ngokhuselo olucacileyo kunye nokuphuculwa kokufunxa kwe-UV. Itekhnoloji ye-encapsulation nayo isetyenziselwe ukuphucula uzinzo kunye nokwandisa unikezelo lwezithako, ukuqinisekisa ukusebenza ngokugqibeleleyo.
Iingqwalasela zoLawulo:
Ngokuqonda okukhulayo kwempembelelo yezithako ze-sunscreen kwimpilo yabantu kunye nokusingqongileyo, imibutho elawulayo iphumeze izikhokelo kunye nezithintelo. Izithako ezifana ne-oxybenzone kunye ne-octinoxate, ezaziwa ngempembelelo yazo enokubakho kwizinto eziphilayo, ziye zabangela ukuba ishishini liphuhlise ezinye iindlela, ukubeka phambili ukhuseleko kunye nokuzinza.
Isiphelo:
Ukuguquka kwezithako kwiikhemikhali ze-sunscreens kuye kwaguqula ukukhuselwa kwelanga kwishishini lezimonyo. Ukusukela kwizihluzi zokuqala ze-organic ukuya kuphuhliso lokhuseleko lwe-UVA oluphezulu kunye nobuchule bokuyila obutsha, ishishini lenze imitsi ebalulekileyo. Uphando oluqhubekayo kunye nophuhliso luya kuqhuba ukudalwa kwemveliso ekhuselekileyo, esebenzayo, kunye nemvelo ekhuselekileyo ye-sunscreen, eqinisekisa ukukhuselwa kwelanga kubathengi.
Ixesha lokuposa: Mar-20-2024