Assertion: petrolatum | /r/HasProperty | efficient lubricant
Facets:
value: further
type: DEGREE
Source sentences:
text: Further, petroleum jelly is an efficient lubricant and does not mat the hair to the same extent as oxidisable fatty oils; thus its role is clearly defined in this part of the manufacture, and if we do not advise its exclusive use, it is because its action on the hair is not quite the same as natural fats.