▁problems . ▁It ▁is ▁the ▁source ▁of ▁qu illa ia , ▁the ▁extract ▁of ▁which ▁is ▁used ▁as ▁a ▁food ▁add itive ▁and ▁as ▁an ▁ing red ient ▁in ▁ph arma ce ut ical s , ▁personal ▁care ▁products , ▁and ▁fire - f ight ing ▁fo am . ▁It ▁is ▁used ▁as ▁an ▁add itive ▁in ▁phot ographic ▁films ▁and ▁as ▁a ▁fo aming ▁agent ▁for ▁drink s . ▁The ▁sap on in ▁content ▁of ▁the ▁b ark ▁helps ▁to ▁stim ulate ▁the ▁production ▁of ▁a ▁more ▁wat ery ▁m uc us ▁in ▁the ▁air ways , ▁thus ▁facil it ating ▁the ▁removal ▁of ▁ph leg m ▁through ▁c ough ing . ▁The ▁sap on ins ▁of ▁this ▁tree ▁are ▁also ▁considered ▁to ▁have ▁adj uv ant ▁properties ▁for ▁v acc ine ▁solutions . ▁ ▁Q S 2 1 ▁adj uv ant ▁is ▁a ▁sap on in ▁obtain able ▁from ▁Qu illa ja ▁sap on aria ▁extract . ▁ ▁Hab itat ▁ ▁This ▁tree ▁occurs ▁at ▁alt itudes ▁to ▁ 2 0 0 0 ▁metres . ▁The ▁species ▁is ▁dr ought ▁resist ant , ▁and ▁toler ates ▁about ▁− 1 2   ° C ▁( 1 0   ° F ) ▁in ▁its ▁natural ▁habitat . ▁Ex amples ▁of ▁specific ▁occurr ences ▁are ▁in ▁central ▁Chile ▁in ▁the ▁for ests ▁of ▁La ▁Camp ana ▁National ▁Park ▁and ▁Cer ro ▁La ▁Camp ana , ▁in ▁which ▁local es ▁it ▁is ▁associated ▁with ▁the ▁Chile an ▁W ine ▁Pal m , ▁J ub ae