1. Propylene glycol. Ntau tshaj 90 feem pua ntawm cov khoom xyaw hauv cov roj luam yeeb yog propylene glycol. Propylene glycol yog cov tshuaj lom neeg muaj pes tsawg leeg. Nws yog feem ntau siv los ua cov kuab tshuaj los yog moisturizer rau cov khoom tu, tshuaj, thiab tshuaj pleev ib ce. Thaum siv me me, tsis muaj qhov pom tseeb tsis zoo rau tib neeg lub cev. Kuj tseem muaj kev txwv meej rau nws siv los ntawm cov tub ceev xwm cuam tshuam.
2. Glycerin, glycerin yog cov kua tsis muaj tshuaj lom thiab tsis qab, uas yog lub ntsiab aerosol hauv e-luam yeeb kua.
3. Flavors thiab flavorings yog cov luag hauj lwm nyob rau hauv lub neej niaj hnub. Kev noj ntau dhau yog teeb meem rau tib neeg lub cev, thiab cov khoom siv tsis zoo yuav ua rau tib neeg lub cev tsis zoo. Cov pa luam yeeb sib txawv hauv cov kua e-luam yeeb yog txhua yam tsim los ntawm cov tshuaj no.
4. Nicotine, cim raws li nicotine hauv cov lus piav qhia ntawm cov kua siv hluav taws xob, yog nicotine tiag tiag. Nicotine yog ib qho ntawm cov ntsiab lus tseem ceeb uas ua rau ntau tus neeg muaj kev quav yeeb quav tshuaj thiab ua rau muaj kev phom sij rau tib neeg lub cev. Cov tshuaj nicotine hauv e-luam yeeb yog qhov me me, tab sis nws tseem tsis tuaj yeem tsis quav ntsej.