Research Article
A Novel Approach for Development and Characterization of Effective Mosquito Repellent Cream Formulation Containing Citronella Oil
Table 1
Prototypes of mosquito repellent cream.
| | Ingredient | HLB value | Properties | Prototype (wt%) | | 1 | 2 | 3 | 4 | 5 |
| | Oil phase | | | | | | | | | Stearic acid | 15.0 | Emulsifier and oil base | 9 | 9 | 9 | 11 | 13 | | Cetostearyl alcohol | 15.5 | Emulsifier/stiffener | 2 | 4 | — | — | — | | Cetyl alcohol | 15 | Stiffening agent, thickener | — | — | 2 | 1 | 1 | | Stearyl alcohol | 10–12 | Coemulsifier, thickener | — | — | 2 | 1 | 1 | | Citronella oil | 12.6 | Mosquito repellent | 10 | 10 | 10 | 10 | 10 | | Aqueous phase | | | | | | | | | Glycerin | — | Humectant, plasticizer | 5 | 5 | 7.5 | 7.5 | 10 | | Propylene glycol (PG) | | Humectant, plasticizer | 2.5 | 5 | 2.5 | — | — | | Potassium hydroxide (KOH) | — | Saponifier | 0.7 | 0.8 | 0.9 | 0.9 | 0.9 | | Distilled water | — | — | q. s. | q. s. | q. s. | q. s. | q. s. | | Preservatives | | | | | | | | | Propyl paraben | — | Oil soluble preservative | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | | Methyl paraben | — | Water soluble preservative | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | |
Organoleptic ingredient | | | | | | | | | Colours | — | Coloring pigment | — | — | — | — | q. s. | | Fragrances | — | Fragrances and perfumes | — | — | — | — | q. s. |
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