Solution:
(c) Glycerol is added to shaving cleanser to forestall quick drying while to upgrade the leathering property of cleanser, a gum called rosin is added to them. It structures sodium rosinate which foams well.
Glycerol is added to cleanser. It capacities (a) as a filler (b) to increment leathering (c) to forestall quick drying (d) to make cleanser granules
Glycerol is added to cleanser. It capacities (a) as a filler (b) to increment leathering (c) to forestall quick drying (d) to make cleanser granules