Amakuru

Ubusembwa bwo hejuru bubaho mu gihe cyo gushyira irangi n'ibara na nyuma yaryo. Ubusembwa bugira ingaruka mbi ku miterere y'urumuri ndetse no ku bwiza bwarwo bwo kurinda. Ubusembwa busanzwe ni ubushyuhe buke bw'ubutaka, imiterere y'ibice, no kudakora neza kw'amazi (igishishwa cy'umuhondo). Kimwe mu bintu by'ingenzi kuri ubu busembwa bwose ni ubushyuhe bw'ibikoreshwa.
Kugira ngo hirindwe ubukana bw'ubushyuhe bw'ubuso, abakora irangi benshi bakoresheje inyongeramusaruro zidasanzwe. Inyinshi muri zo zigira ingaruka ku bushyuhe bw'ubuso bw'irangi n'ubushyuhe, cyangwa zikagabanya itandukaniro ry'ubushyuhe bw'ubuso.
Ariko,Inyongera za silikoni (polysiloksani)zikoreshwa cyane mu gusiga no gusiga amarangi.

Bitewe na polysiloxanes, ishobora guterwa n'imiterere yayo ya shimi - yagabanyije cyane imbaraga z'ubuso bw'irangi ry'amazi, bityo, imbaraga z'ubuso bw'#gusiga irangina#irangibishobora guhagarara ku giciro gito cyane. Byongeye kandi,inyongeramusaruro za silikonikunoza uburyo irangi ryumye cyangwa agapira ko gusiga ritemba, ndetse no kongera ubushobozi bwo gushwanyagurika no kugabanya uburyo bwo kuziba.

[Icyitonderwa: Urutonde rw'ibirimo ruri hejuru ruboneka muri Bubat, Alfred; Scholz, Wilfried. Inyongera za Silicone zo gusiga amarangi no gusiga. Ikinyamakuru Mpuzamahanga cya CHIMIA cy’Ubutabire, 56 (5), 203–209.]