I'm happy to help.
I will caution you regarding dimethicone in shampoo. It may not stay mixed in well, and if you do get it to mix in properly, it will reduce the lather you get. That's why I mentioned it being used to suppress lather in industrial detergents. I recommend you use it only in conditioner. If you want to make a 2-in-1 shampoo/conditioner, you'll need to use something else. I'm on break at work right now so I can't do it right now but later I will give you some recommendations. Remember "conditioned" doesn't always mean "shiny", but conditioned hair will feel smoother.
Ok. I have some findings to report. I opened my grocery store's shopping app and searched for "2 in 1 shampoo" and started reading ingredient lists, to see what the big brands are using. It looks like they are mostly using some combination of: Dimethicone, Polyquaternium 10, and guar hydroxypropyltrimonium chloride. The one that had an ingredient list most similar to yours, used only Polyquaternium 10. This was in a shampoo for babies and toddlers.
So, you can use silicones in a shampoo, but I am not sure which surfactants are best for using with dimethicone. Most of the ones that I saw that used it, had sodium laureth sulfate, sodium lauryl sulfate, and cocamidopropyl betaine as their main surfactants, with the other surfactants varying from product to product. But those are very popular surfactants anyway. One thing they had in common, was the dimethicone was usually somewhere between the 1% and 2% place in the ingredient lists.
The Polyquaternium 10 and guar hydroxypropyltrimonium chloride were usually below the 1% line.
So, if you already have the dimethicone, I suggest you make one small batch of shampoo and then divide it up and try different percentages of dimethicone in your samples (leave one sample without it). Number some bottles and write down how much dimethicone each one has. Let them sit for a few days to see if they'll separate. If they're good, give all the samples to your family and have them try each one, including the one without any dimethicone. (I'm not sure if your kids are old enough, so if not maybe get some friends or neighbors to help test it). Once everyone has used each shampoo at least once, have them tell you which they liked best, and why they liked it. Make sure they don't know what the difference is between them. Scent them all the same, or leave out the fragrance.
This way, you'll know for sure what kind of benefit dimethicone has in shampoo. I'd be interested in hearing your results if you do this.
Hi , can I know from where you procure BTMS-50? I’m from India and I’m not able to procure it here. I saw few sellers selling in Amazon, but I’m not sure if they are selling BTMS as BTMS -50 as I could see few bad reviews regarding it. Can you please help me out in procuring it as I had to make some body butters this winter? Thanks.
A little while back we had a thread here for soap making suppliers in India, I skimmed the list but I'm not sure if any of the sites have things besides strictly soap making ingredients. Here's that thread anyway:
Soap making ingredients suppliers in India
I suggest you start a new thread in the Shopping Recommendations area and ask if anyone knows where you can get it. We have quite a few members from India here and you might get several recommendations for sites that sell bath and body product ingredients.