[gld010]

I’d straight up say the alcohol based ones are harmful to skin, forget “necessary”. My skin is more sensitive than most peoples’ and I’m speaking to my experiences, but I’m sure applying essentially straight alcohol to your skin is going to dry it right out, yeah?

Toners were always something that puzzled me to be honest, that little bit of backstory makes their existence make a lot more sense to me.

[gld010]

Great presentation, thanks! I haven’t used carbomers in any formulations yet but I’ll keep this presentation in mind for when I do.

[gld010]

As far as 2) goes, there is no test for “organic”. The only thing you can do is trust suppliers documentation.

[gld010]

Have you checked the technical documents for your EWax blend? Often times technical documents will tell you HLB if applicable and how much to use.
For example, Montanov 68 doesn’t use HLB because it’s based on “liquid crystal” emulsifying concepts, and the use rate is between 0.5% and 3% for an oil phase that takes up to 60% of the total formula.  This information was found on UL Prospector in one of the technical document links. If you don’t have these documents get in contact with your supplier.

[gld010]

Just update to this for anyone that is following or will be following since they searched the same issue I had:

I ordered some pigment samples from Kobo that they said were good in W/Si emulsions and I’m not having any issues anymore. It was their TTB treatment: http://www.koboproductsinc.com/Downloads/Kobo-TTB.pdf

[gld010]

@Bobzchemist
Sounds like you!

[gld010]

I understand that silicones tend to be inert and think that it’s a poor idea to regulate them out of existence but I honestly have no idea what the other culprit(s) would be that lead me to break out in hives. Cyclopentasiloxane is the only common thread and the skin on my hand acted the same as the skin on my armpits.

[gld010]

I also visibly reacted to the continuous phase of a W/Si emulsion that had a lot of cyclopentasiloxane in it during colormatching. 

[gld010]

Brenntag sells a non-nano TiO2. Titanium Dioxide 3328 USP

[gld010]

Honestly I wish there were more deodorants without cyclopentasiloxane in them. During my employment here I figured out that I’m sensitive to it (also sensitive to isododecane, my skin must hate volatiles), and past years of trying deodorants only to end in itchy pits within 3 days all made sense. Maybe I should start buying european deodorant?

[gld010]

Seconding ULProspector. Sign up there and there are plenty of starting formulations.

[gld010]

PVP will give you a good hold, I’m not sure about the dry texture though.

[gld010]

Here are some threads about preservatives turning pink! Did you use one of these? 

https://chemistscorner.com/cosmeticsciencetalk/discussion/comment/20155#Comment_20155

https://chemistscorner.com/cosmeticsciencetalk/discussion/comment/21957#Comment_21957

[gld010]

What preservative was it, specifically? I’ve seen cases on this forum of a certain preservative, I think one that was designed for the “natural” crowd, turning product pink. I think it was grapefruit seed extract or something related like an essential oil. Perhaps put a chelate compound in your formula? Or would putting a chelate compound not make sense if a metal salt, magnesium, is present on purpose?

[gld010]

I’m personally not, but I think there is someone on the team who is. That solves that problem. Thanks Perry!

[gld010]

Shame it’s out of print, I don’t think I can convince management here to spend $170 on a book!

[gld010]

What makes you think polyisobutene is bad? Just because it’s a petroleum derivative? What’s wrong with that?

[gld010]

Thank you for the starting point, @Microformulation ! I guess my Google-fu isn’t as good as it used to be.

[gld010]

Though I understand nano is best for sunscreen filters, I wish both this and BASF’s Sunscreen Simulator had options for non-nano TiO2 and ZnO. I get a lot of requests for “physical” SPF BB Cremes and moisturizers for the Whole Foods crowd.

[gld010]

For enhanced stability you can add 0.2% Xanthan gum to the water phase. IMO the glycerin is too high, at 10% you might be getting some stickiness from it. I think using a fatty alcohol like cetyl would be a good idea, between 1-3%. No comments on the oil phase question, some of my emulsions are also oil heavy like that and are still stable though some more experienced users here recommend an oil phase more between 10-15%.

[gld010]

I now D4 is restricted just about everywhere but I thought only the EU had restrictions on D5 now? Something like you can only use 0.2% max. What restrictions are in the US now?

[gld010]

We use hose clamps attached to a… stick(?) for ours, they come in a multitude of sizes and are adjustable. Maybe look for something like that?

[gld010]

Looks like I won’t be able to see it live as we got some rush orders for a lot of bulk to be made so I will be in and out of my office. To view the recording after the fact, do you use the same link that was sent out in the email?

[gld010]

I’ve noticed a few threads today that were submitted in multiple. I like the move of the notifications to the side with icons instead of at the top.

[gld010]

I think what you’re talking about is called “pilling” and I’ve seen it happen due to thickeners like HEC or xanthan gum. Some film-forming silicones can also cause this since silicones like to stick to themselves when rubbed. I don’t know enough about carbomer to say if it pills or not.