Monday, September 6, 2010

Esters: Using PPG-3 benzyl ether myristate in shampoo

If you want to use PPG-3 benzyl ether myristate (aka Crodamol STS) in a shampoo, you'll want to use it around 3% to ensure it doesn't end up as an oily mess floating on the top of your product. If you're using it in a shampoo bar where it's unlikely to separate, you could use it as high as 15%, but you're unlikely to want to do that unless you have really dry hair or need a lot of dimethicone-like shine! 

Let's take a look at creating a shampoo with PPG-3 benzyl ether myristate - and by definition, any shampoo that contains this ingredient would be a conditioning shampoo! (For all the shampoo recipes for this blog, click here.) 

You can add PPG-3 benzyl ether myristate into any shampoo recipe at up to 3%, but here I'm going to modify my favourite liquid shampoo - a conditioning shampoo for oily hair with SCI - because it's my favourite shampoo! Adding the PPG-3 benzyl ether myristate to this recipe will increase conditioning, lubricity, and emolliency of the product. (If you have dry hair, here's your recipe!)

In the previous recipe, I used either 2% dimethicone or 2% cationic polymer. In this recipe, I'm using 2% of each because I want it to be really conditioning. 

CONDITIONING SHAMPOO WITH SCI FOR OILY HAIR WITH PPG-3 BENZYL ETHER MYRISTATE
CONDITIONING SHAMPOO FOR NORMAL HAIR WITH SCI
HEATED PHASE
53% water
10% cocamidopropyl betaine
10% SCI (without stearic acid)
5% surfactant of choice (SLeS, SMC Taurate, a blend, and so on)
10% aloe vera
2% glycerin
2% hydrolyzed protein

COOL DOWN PHASE
3% cationic polymer like honeyquat or polyquat 7
2% Crodamol STS
2% panthenol
0.5% to 1% preservative
1% to 2% fragrance or essential oils
(up to 2% Crothix - when cooled down - optional)

Use the general shampoo making instructions for this recipe. As usual, modify this as you wish leaving out the aloe vera (but remembering that leaving out the aloe vera will result in a thinner product that needs more thickening), switching the surfactants, leaving out the humectants, and so on. 

If you're a dry haired girl, you can use this instead of the glycol distearate in your shampoo or substitute it for an oil you might normally include! 

Join me tomorrow for fun formulating conditioners with PPG-3 benzyl ether myristate! 

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