[CarrissaDowdy]

@erindlea thank you.  I will take a look at this literature and see if this is something our customer will add to their label copy.

[CarrissaDowdy]

Thank you.  I read this article before.  I understand traditional deodorant formulation.  My problem is that my predecessor has combined two propanediol formulations into one to make them work.  A water/propanediol/glycerin stick must be pH adjusted before the hardener stearic acid is added.  However, my predecessor tried to bypass this step by using sodium stearate and water to neutralize the reaction.  In addition, propanediol and water require a solubilizer and higher heating initially for stability.  I’m still not sure how to tweak my formulation to eliminate the “sweating”.

[CarrissaDowdy]

Nothing is working.  I have changed the amount of filler material,  the heating and cooling temperature and reduced the glycerin.

[CarrissaDowdy]

I’m going to lower my glycerin level and see what happens.

[CarrissaDowdy]

Belassi-I heat water/glycerin,dissolve sodium stearate and then add propanediol.  It cools to a solid.
Bob-I use a silica/corn starch mix in my preferred version of the formula but this was already in production.

[CarrissaDowdy]

Belassi-It’s a legacy formula from my predecessor.  I’m not sure why he added so much glycerin.  The pH is about 8.

[CarrissaDowdy]

Propanediol-40%
Water-25%
Glycerin-25%
Sodium Stearate-5%
Stearic Acid-1.5%
Triglycerol Monolaurate-1.5%
Exthylhexylglycerin-1%
Fragrance-1%

Mark-the irony is killing me!

[CarrissaDowdy]

Belassi,
Would corn starch be the best “natural” solution?