Guest guest Posted January 11, 2001 Report Share Posted January 11, 2001 , In many cases PG and DPG would not be interchangealbe. But it really depends on the application. What is the final product? Rob Dr. S. Pappas Essential Oil University 3043 Ct. New Albany, IN 47150 USA ph: fax: http://www.essentialoils.org DPG vs PG Hi folks, I've been looking at some formulas that require PG (Propylene Glycol) and the only thing available to me locally in small quantities is DPG (Dipropylene Glycol). Before I rush out and buy the DPG, can it be used interchangeably with PG? I did a quick search on my archives, but couldn't find a definative answer Thanks in advance! cheers! . Addresses: Post message: Cosmeticinfoegroups Subscribe: Cosmeticinfo-subscribeegroups Unsubscribe: Cosmeticinfo-unsubscribeegroups List owner: Cosmeticinfo-owneregroups URL to home page: /group/Cosmeticinfo Quote Link to comment Share on other sites More sharing options...
Guest guest Posted January 11, 2001 Report Share Posted January 11, 2001 A couple of the formulas are for a stick product: Soft-Clear Sticks Stick Formulation No. 21 (Analgesic Medication Stick) Methyl Salicylate 35% Menthol 15% Sodium Stearate 13% Purified Water 12% Propylene Glycol 25% 1.Weigh/measure the ingredients. 2.Gently heat and melt the Sodium Stearate. 3.Mix the Purified Water with the Propylene Glycol and add to the melted Sodium Stearate. 4.Mix thoroughly, remove from heat and allow this base to cool slightly. 5.Dissolve the Menthol in the Methyl Salicylate, add this solution to the base and mix thoroughly. 6.As the product begins to thicken, continue to mix and pour into either 5 g or 20 g stick containers. 7.Allow to harden at room temperature. Stick Formulation No. 22 (Clear Stick Base) Sodium Stearate 7 Alcohol 65 Propylene Glycol 25 Cyclomethicone 3 1.Weigh/measure the ingredients. 2.Melt the Sodium Stearate. 3.Mix the Alcohol, Propylene Glycol and Cyclomethicone and add to the melted Sodium Stearate. 4.Mix well, cool slightly and pour into stick molds. I've also seen it called for in several lotion/cream formulas as a humectant. I can post those formulas too, if you like. thanks! cheers, . -----Original Message----- , In many cases PG and DPG would not be interchangealbe. But it really depends on the application. What is the final product? Rob Quote Link to comment Share on other sites More sharing options...
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