## Sunday, April 24, 2011

### HLB system: A demonstration (part 2)

Let's choose a few more lotion recipes and see how we can use the HLB system to make our own emulsifiers! Let's go with an easy one first - the six ingredient lotion for my husband's itchy skin!

SIX INGREDIENT LOTION WITH SHEA, SOY BEAN, AND SESAME OIL
HEATED WATER PHASE
39.5% water
20% aloe vera
3% glycerin

HEATED OIL PHASE
10% refined shea butter
10% soy bean oil
10% sesame oil
6% BTMS-50

COOL DOWN PHASE
0.5% liquid Germall Plus
1% fragrance oil (Clementine Cupcake)

Remember the steps to finding out the HLB value of your ingredients.

1. Which ingredients have an HLB value?
2. How much of each ingredient is in the total recipe?
3. Divide this by the total oil phase to get a percentage.
4. Multiply the percentage by the HLB value. Add them together to get the HLB value of your oil phase.

1. Which ingredients in this lotion have an HLB value?
We have three ingredients with an HLB value - the shea butter (8), soy bean oil (7), and sesame oil (7).

2. How much of each ingredient is in the total recipe?
10% shea butter
10% soy bean oil
10% sesame oil
Total oil phase = 30%
Remember to leave out the original emulsifier as we are trying to replace that!

3. Divide this by the total oil phase to get a percentage.
My total oil phase is 30%.
shea butter - 10/30 = 0.333
soy bean oil - 10/30 = 0.333
sesame oil - 10/30 = 0.333

All right, I know this actually equals 99.99999% so let's round one of the oils up to 0.34 and leave the rest at 0.33 and be done with it! I'll round the sesame oil to 0.34 so we have...
shea butter = 0.33
soy bean oil = 0.33
sesame oil = 0.34

4. Multiply the percentage by the HLB value. Add them together to get the HLB value of your oil phase.
shea butter - 0.33 x 8 = 2.64
soy bean oil - 0.33 x 7 = 2.31
sesame oil - 0.34 x 7 = 2.38
Total is 7.33. So our required HLB for this lotion is 7.33.

The steps to finding out the HLB value of your emulsifiers.
1. Find a low HLB emulsifier and a high HLB emulsifier.
2. Work on the percentages to find a total that is very close to the HLB value of your oil phase.
3. Rejoice!

1. Find a low HLB emulsifier and a high HLB emulsifier.
Let's go with glycol distearate (HLB 1) and ceteareth-20 (15.2) for our emulsifiers.

2. Work on the percentages to find a total that is very close to the HLB value of your oil phase.
50% glycol distearate = 1 and 50% ceteareth-20 = 7.6. Total = 8.1. Too high!
40% glycol distearate = 0.4 and 60% ceteareth-20 = 9.12. Total = 9.52. Too high!
60% glycol distearate = 0.6 and 40% ceteareth-20 = 6.08. Total = 6.68. Too low!
55% glycol distearate = 0.55 and 45% ceteareth-20 = 6.84. Total = 7.39. Close enough!

So we know we need to use 55% glycol distearate and 45% ceteareth-20 as our emulsifier.

If we're using 4% emulsifier in this product (again, this is kind of a random number I've chosen as there isn't a rule of thumb for HLB emulsifiers), then we need 2.2% glycol distearate (4% x 0.55) and 1.8% ceteareth-20 (4% x 0.45) in our recipe.

Remember, when you decrease the oil phase, increase the water phase by the same amount!

SIX INGREDIENT LOTION WITH SHEA, SOY BEAN, AND SESAME OIL MODIFIED TO USE HLB EMULSIFIERS
HEATED WATER PHASE
41.5% water
20% aloe vera
3% glycerin

HEATED OIL PHASE
10% refined shea butter
10% soy bean oil
10% sesame oil
2.2% glycol distearate
1.8% ceteareth-20

COOL DOWN PHASE
0.5% liquid Germall Plus
1% fragrance oil (Clementine Cupcake)

Now comes the rejoicing! Yay!

I'm posting a recipe in a few minutes so you can practice the HLB system on your own! Have fun!

Bajan Lily said...

Can you still have a stable emulsifier if you use PS80 (HLB 15) and Glyceryl Stearate (HLB 3.8.)?

Susan Barclay-Nichols said...

Hi Bajan Lilly. (I'm addressing this question in a few days, but I can't leave you waiting that long!) Yes - if you use a low HLB emulsifier and a high HLB emulsifier together, you should get a stable emulsion if you've worked out the right percentages!

Bajan Lily said...

Cool ( and thanks for responding early!!) I was just curious because ps80 is such a weird 'thing', a kind of sticky liquid as opposed to pellets like e-wax or powders like some of the other emulsifiers. I'll try this combination and see how it turns out!

Otr 214423 said...

VIRUS REMOVAL

Is Your Computer Sluggish or Plagued With a Virus? – If So you Need Online Tech Repairs
As a leader in online computer repair, Online Tech Repairs Inc has the experience to deliver professional system optimization and virus removal.Headquartered in Great Neck, New York our certified technicians have been providing online computer repair and virus removal for customers around the world since 2004.
Our three step system is easy to use; and provides you a safe, unobtrusive, and cost effective alternative to your computer service needs. By using state-of-the-art technology our computer experts can diagnose, and repair your computer system through the internet, no matter where you are.
Our technician will guide you through the installation of Online Tech Repair Inc secure software. This software allows your dedicated computer expert to see and operate your computer just as if he was in the room with you. That means you don't have to unplug everything and bring it to our shop, or have a stranger tramping through your home.
From our remote location the Online Tech Repairs.com expert can handle any computer issue you want addressed, like:
• - System Optimization
• - How it works Software Installations or Upgrades
• - How it works Virus Removal
• - How it works Home Network Set-ups
Just to name a few.
If you are unsure of what the problem may be, that is okay. We can run a complete diagnostic on your system and fix the problems we encounter. When we are done our software is removed; leaving you with a safe, secure and properly functioning system. The whole process usually takes less than an hour. You probably couldn't even get your computer to your local repair shop that fast!
Call us now for a FREE COMPUTER DIAGONISTIC using DISCOUNT CODE (otr214423@gmail.com) on +1-914-613-3786 or chat with us on www.onlinetechrepairs.com.

Otr 214423 said...

Problem: HP Printer not connecting to my laptop.

I had an issue while connecting my 2 year old HP printer to my brother's laptop that I had borrowed for starting my own business. I used a quick google search to fix the problem but that did not help me.

I then decided to get professional help to solve my problem. After having received many quotations from various companies, i decided to go ahead with Online Tech Repair (www.onlinetechrepairs.com).

Reasons I chose them over the others:
1) They were extremely friendly and patient with me during my initial discussions and responded promptly to my request.
2) Their prices were extremely reasonable.
3) They were ready and willing to walk me through the entire process step by step and were on call with me till i got it fixed.

How did they do it
1) They first asked me to state my problem clearly and asked me a few questions. This was done to detect any physical connectivity issues with the printer.
2) After having answered this, they confirmed that the printer and the laptop were functioning correctly.
3) They then, asked me if they could access my laptop remotely to troubleshoot the problem and fix it. I agreed.
4) One of the tech support executives accessed my laptop and started troubleshooting.
5) I sat back and watched as the tech support executive was navigating my laptop to spot the issue. The issue was fixed.
6) I was told that it was due to an older version of the driver that had been installed.

My Experience
I loved the entire friendly conversation that took place with them. They understood my needs clearly and acted upon the solution immediately. Being a technical noob, i sometimes find it difficult to communicate with tech support teams. It was a very different experience with the guys at Online Tech Repairs. You can check out their website www.onlinetechrepairs.com or call them on 1-914-613-3786.
Would definitely recommend this service to anyone who needs help fixing their computers.
Thanks a ton guys. Great Job....!!