Iingcali zokhathalelo lolusu ziyavuma ukuba unyango lokukhanya okubomvu luluncedo. Nangona le nkqubo inikezelwa kwiindawo zokutshisa ilanga, ayisondelanga kangako kwinto eyenziwa kukutshisa ilanga. Umahluko ophambili phakathi kokutshisa ilanga kunye nonyango lokukhanya okubomvu luhlobo lokukhanya abalusebenzisayo. Nangona imitha ye-ultraviolet (UV) eqatha isetyenziswa kwinkqubo yokutshisa ilanga, ukukhanya okubomvu okuthambileyo kuyafuneka kunyango lokukhanya okubomvu. Ngenxa yoko, iingcali zesikhumba zicebisa kakhulu ukuba zingatshisi ilanga.
Ixabiso leebhedi zonyango lwezibane ezibomvu kunye nonyango luxhomekeke kwinto oyinyangayo, indawo okuyo, kunye nokuba ufuna unyango kwingcali yezempilo okanye uziphathe usebenzisa isixhobo sonyango lwezibane ezibomvu. Ngokubanzi, lindela i-$25 ukuya kwi-$200 ngonyango ngalunye; kodwa unyango lwezibane ezibomvu ekhaya lunokuba nexabiso eliphantsi ngakumbi ngokuhamba kwexesha.