Leli ipayipi likawoyela wesipuni se-glycerin elishisayo.I-Glycerin ngokwayo iwuketshezi olungenabuthi, ngokuvamile olwenziwe ngama-acids anamafutha, ngokuvamile angena ekudleni kwethu njengesithako esimnandi noma esilondolozayo.
Amakhoyili asemapayipini e-glycerin aklanyelwe ukupholisa kahle intuthu njengoba idlula epayipini.