Comments on: HLB – The Easiest Way to Create An Emulsion http://chemistscorner.com/hlb-the-easiest-way-to-create-an-emulsion/ Cosmetic science resource site where you can learn all about cosmetic chemistry Thu, 09 Feb 2012 21:38:22 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Carol JK http://chemistscorner.com/hlb-the-easiest-way-to-create-an-emulsion/#comment-6312 Carol JK Thu, 29 Dec 2011 14:29:49 +0000 http://chemistscorner.com/?p=138#comment-6312 Hi Kelly, yes, i understand what you meant. Just wonder how to interpret/decide which emulsion remains the most stable? I have set the surfactant to be 3% (parenteral formulation). Then, all the resulting emulsion seems to be the same. Separation of oil and water has taken place. The oil will immediately float back to above after i shaken the emulsion (although the oil did dispersed into the water when i shaked the emulsion at 1st). However, i do see droplets of oil. They do not aggregate to form a bigger droplets. Should i just proceed with other surfactant? Because the same situation has taken place for the 3rd kind of surfactant's mixture. Thanks for the advice. =) Hi Kelly, yes, i understand what you meant.

Just wonder how to interpret/decide which emulsion remains the most stable? I have set the surfactant to be 3% (parenteral formulation).

Then, all the resulting emulsion seems to be the same. Separation of oil and water has taken place. The oil will immediately float back to above after i shaken the emulsion (although the oil did dispersed into the water when i shaked the emulsion at 1st). However, i do see droplets of oil. They do not aggregate to form a bigger droplets. Should i just proceed with other surfactant? Because the same situation has taken place for the 3rd kind of surfactant’s mixture. Thanks for the advice. =)

]]> By: Abbasi http://chemistscorner.com/hlb-the-easiest-way-to-create-an-emulsion/#comment-6285 Abbasi Wed, 28 Dec 2011 11:50:03 +0000 http://chemistscorner.com/?p=138#comment-6285 Thanks so much. I want to ask one question: How i can prepare an EC of mineral oil(raw liquid parrafin oil)?I know some emulsifiers can use for it but with high using level(about 8%-10 %).I want to use a suitable emusifier with lower usage than it. regards Abbasi Thanks so much.
I want to ask one question:
How i can prepare an EC of mineral oil(raw liquid parrafin oil)?I know some emulsifiers can use for it but with high using level(about 8%-10 %).I want to use a suitable emusifier with lower usage than it.
regards
Abbasi

]]> By: kelly http://chemistscorner.com/hlb-the-easiest-way-to-create-an-emulsion/#comment-5770 kelly Tue, 29 Nov 2011 15:50:30 +0000 http://chemistscorner.com/?p=138#comment-5770 Hi George You are probably going to have to do some research on stabilizing these types of formulas and other ingredients you can use. Good luck with your formulation. -Kelly Hi George
You are probably going to have to do some research on stabilizing these types of formulas and other ingredients you can use. Good luck with your formulation. -Kelly

]]> By: George http://chemistscorner.com/hlb-the-easiest-way-to-create-an-emulsion/#comment-5764 George Tue, 29 Nov 2011 06:15:34 +0000 http://chemistscorner.com/?p=138#comment-5764 hi Kelly .. .first i would like to thank u for this quick response i know that it is better to put some waxes... but i felt that the cream is thick enough due to the large amount of SPAN 60 WAX ... still i don't want to do O/W cream.. inversely, i'm insisting on W/O creams... if u can help me in this .. because till now none of my formulas was stable at 50 Centigrate for more than 48 hours ...( the oily phase begine to separate !!!! ) thanks a lot in advance kelly hi Kelly .. .first i would like to thank u for this quick response

i know that it is better to put some waxes… but i felt that the cream is thick enough due to the large amount of SPAN 60 WAX …
still i don’t want to do O/W cream.. inversely, i’m insisting on W/O creams… if u can help me in this .. because till now none of my formulas was stable at 50 Centigrate for more than 48 hours …( the oily phase begine to separate !!!! )

thanks a lot in advance kelly

]]> By: Kelly Dobos http://chemistscorner.com/hlb-the-easiest-way-to-create-an-emulsion/#comment-5757 Kelly Dobos Mon, 28 Nov 2011 15:34:23 +0000 http://chemistscorner.com/?p=138#comment-5757 Hi George, By the looks of it you are trying to create a w/o formulation. These are very tricky formulations to produce with only ethoxylated emulsifiers. Typically, waxes are added to the oil phase to help stbailize these types of emulsions and homogenization is a must. You may want to adjust your oil phase by adding oils with higher required HLBs and try making a o/w emulsion before attempting a w/o with this method. Hi George,
By the looks of it you are trying to create a w/o formulation. These are very tricky formulations to produce with only ethoxylated emulsifiers. Typically, waxes are added to the oil phase to help stbailize these types of emulsions and homogenization is a must. You may want to adjust your oil phase by adding oils with higher required HLBs and try making a o/w emulsion before attempting a w/o with this method.

]]> By: George http://chemistscorner.com/hlb-the-easiest-way-to-create-an-emulsion/#comment-5755 George Mon, 28 Nov 2011 14:33:42 +0000 http://chemistscorner.com/?p=138#comment-5755 hey all ... I want to prepare the following formula: 1- 40 g vaseline 2- 40 g water 3- 8 g emulsifier ( i shose Span 60"sorbitan monostearate, HLB = 4.7 and tween 60, hlb = 14.9): 7 g span 60 + 1 g tween 60) i heated to 70 for the oily phase and 73 for the water phase .. i mixed with a large stirring around 3000 RPM... the emulsion created is great .. but it lack the stability in 50 C CAN ANYONE OF U EXPLAIN !!! alghough i balanced the HLB !! hey all …

I want to prepare the following formula:

1- 40 g vaseline

2- 40 g water

3- 8 g emulsifier ( i shose Span 60″sorbitan monostearate, HLB = 4.7 and tween 60, hlb = 14.9): 7 g span 60 + 1 g tween 60)

i heated to 70 for the oily phase and 73 for the water phase ..

i mixed with a large stirring around 3000 RPM…

the emulsion created is great .. but it lack the stability in 50 C

CAN ANYONE OF U EXPLAIN !!! alghough i balanced the HLB !!

]]> By: Clive http://chemistscorner.com/hlb-the-easiest-way-to-create-an-emulsion/#comment-3453 Clive Sat, 20 Aug 2011 03:48:54 +0000 http://chemistscorner.com/?p=138#comment-3453 My own view is that making successful emulsions is more of an art than a science. My first emulsion, looking back on it, was actually a butter: it contained 25% lipids, of which 15% was shea. It had a salmon colour because of the green tea extract in it. I thought it was a failure, but got demands to make more from test customers who really loved it. More lately I've been more into using desert plant bioactives. My own view is that making successful emulsions is more of an art than a science. My first emulsion, looking back on it, was actually a butter: it contained 25% lipids, of which 15% was shea. It had a salmon colour because of the green tea extract in it. I thought it was a failure, but got demands to make more from test customers who really loved it. More lately I’ve been more into using desert plant bioactives.

]]> By: Perry http://chemistscorner.com/hlb-the-easiest-way-to-create-an-emulsion/#comment-3422 Perry Wed, 17 Aug 2011 14:16:24 +0000 http://chemistscorner.com/?p=138#comment-3422 Saravanan - see our blog post about stability testing. Saravanan – see our blog post about stability testing.

]]> By: Saravanan http://chemistscorner.com/hlb-the-easiest-way-to-create-an-emulsion/#comment-3421 Saravanan Wed, 17 Aug 2011 14:14:34 +0000 http://chemistscorner.com/?p=138#comment-3421 How to test the stability of emulsion How to test the stability of emulsion

]]> By: DP Mainali http://chemistscorner.com/hlb-the-easiest-way-to-create-an-emulsion/#comment-3050 DP Mainali Fri, 08 Jul 2011 11:38:10 +0000 http://chemistscorner.com/?p=138#comment-3050 HLB value is a usefull tool but chances of product unsafety... HLB value is a usefull tool but chances of product unsafety…

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