COLD CREAM

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COLD CREAM
AIM: To prepare and submits 10gm of Cold Cream.
FORMULA:
S. No.
Ingredients
Qty for 100gm
Qty for ____ gm
1
Bees Wax
8 g

2
Mineral Oil
49 ml

3
Soft Paraffin
7 g

4
Cetyl Alcohol
19 ml

5
Borax
0.4 g

6
Water
34.6 ml

7
Perfume
Q.S



PRINCIPLE:

Cold creams are typically beeswax-borax emulsions. They are called as cold cream because on application to skin the evaporation of water leads to cooling effect. When a solution of borax is added to molten beeswax, emulsifying agent is formed because of wax acid & borax i.e. wax acid is saponified by borax forming Na- soap (i.e. Na soap of wax acid). This agent is formed at the interface between oil & water, which emulsifies the mineral oil in water. It is because of beeswax, cream is able to contain appreciable amount of water. These are typically white creams of higher-class free form greasiness, which has firm consistency & on application they liquefy and spread easily.

This cream can be either o/w type (or) w/o type depending upon the ratio of water phase. 45% is considered to be the critical level of water phase, cream-containing water less than 45% is w/o type & cream with water phase more than 45% is o/w type of emulsion.

Percentage of beeswax used ranges from 5-15% & borax 5-6% of wt of beeswax. Lesser amount of beeswax gives softer cream & higher amount give stiffer cream.

Both w/o & o/w emulsion can be obtained by beeswax-borax which depends upon.

·         Ratio of oil to water phase.
·         Temperature of preparation
·         Amount of beeswax saponified.
·         Other ingredient present.

Cold cream has got a neutral pH.

PROCEDURE:
Take 2.16gm beeswax, 1.89gm of soft paraffin, 0.27gm of cetylalcohol 13.2ml mineral oil in a clean dry vessel & heat on water bath to 80° C. Dissolve borax in water in another vessel & heat simultaneously with the oil phase to 70°C. Add the aqueous phase to oil phase slowly with rapid stirring. Continue stirring slowly after the additions of aqueous phase until the cream has cooled to about 50° c. add the perfume, mix well. Weigh out 25gm of cream & fill into jar. At the time of filling the cream, it should have cooled to 400-42°C.

USE: To prevent loss of water for dry skin especially during winter.

REFERENCE: Hanry’s cosmetology. Page: 54 -55.

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