[crisbaysauli]

I agree with sir markfuller. We used to use gums for a natural shampoo, and client feedback is that white flakes, sort of dandruff-like, appeared on their hair with regular use of our product. I think it is really a battle now between “natural” and “good performance” and there’s nothing we could do about it. One tip though. I usually dissolve my gums in water instead of glycerin. Hope this helps. Happy new year!

[crisbaysauli]

Yes @Bobzchemist. Like in labels and packaging, they establish a LSD standard. Can this also be applied to bulk products?

[crisbaysauli]

@Belassi maybe this is one factor, since our weighing scales have a precision of 0.005 g. I’ll have to check on that.

@Bobzchemist is it acceptable to establish a Light-Standard-Dark shade? 

[crisbaysauli]

I agree with @milliachemist. I find acidic conditioner better, with pH 4.00 - 5.00, than those with pH above 5.00.

[crisbaysauli]

Digging from my deepest chemistry memories, I think it is best to add a pre-dissolved Niacinamide into the lotion after adjusting the pH of your base to 6 and above.

[crisbaysauli]

Maximum allowable limits for leave on products are:

Sodium benzoate - 0.5% Potassium sorbate 0.6%. You have to perform a preservative efficacy test to prove the micro stability of your mist.

[crisbaysauli]

Thanks so much guys. I just had a meeting with our marketing and QA group and they were also awed by the realization that oils do not have pH! Thank you.

[crisbaysauli]

@Bobzchemist I tried searching the internet but links refer me to astm.org, which is a testing lab where I’ll have to pay for these tests. 

[crisbaysauli]

Vitamin C ester and Vitamin C Magnesium might be causing this, since you are using quite high dosages. I had a similar experience where 0.001% Sodium Ascorbyl phosphate made my lotion yellow in just 1 week at 45 degrees. No idea how to stabilize this… It might be good to source for an encapsulated Vitamin C.

[crisbaysauli]

I would suggest the usual sodium benzoate/ potassium sorbate when the pH is 4.0-5.0. What exactly is the application of your mist?

[crisbaysauli]

@braveheart I have had the same dilemma for quite a while now. For example, I was using Material A - Stearic acid and Palmitic acid - where Stearic:Palmitic is 38:62. Do I separate these two in the label?

[crisbaysauli]

For “natural” aromas, usually manufacturers combine essential oils from fruits or flowers, so it is just right for them to provide the source of the essential oil. You can even claim “fragrance-free” as a marketing point since the aroma used is a natural scent of natural ingredients.

[crisbaysauli]

One suggestion maybe is adding a post-emulsion thickener like Sodium polyacrylate (Covacryl MV60). Coconut oil is a little problematic to handle really.

[crisbaysauli]

Thank you so much @Belassi!

[crisbaysauli]

@Iaskedbetter do you have a reference printed material on this one? It might help me explain to our marketing group.

@chemist1 did you have any issues about the pH?

@Bill_Toge can you recommend a supplier for this fixed reference electrode?

[crisbaysauli]

I agree with the Structure XL. It might also help in the reduction of drying time of your deodorant.

[crisbaysauli]

If you already have a stable formula, then why still look for a stabilizer?

You might want to try Emulgade NLB from Cognis. This emulsifier is made specifically for deodorant applications.

[crisbaysauli]

@Belassi. Thank you for the information. I tried your suggestion and the following became my ingredient list

Stearic acid

Lauric acid

Myristic acid

Potassium hydroxide

PEG-150 distearate

Glycol distearate

Beeswax

Coca betaine

My problem now is, the cream formed appears bubbly, not smooth. Is this just a matter of mixing speed? Or do I need a vacuum pump to remove air in the mixing vessel?

[crisbaysauli]

Welcome to the forums Mr Belassi sir.

[crisbaysauli]

Sodium Caproyl/ Lauroyl Lactyl Lactate (Dermosoft Decalact) claims to be a natural substitute to Triclosan. It also claims deodorizing, preserving and antibacterial properties. You might want to check it out.

[crisbaysauli]

maybe its function is not to protect the hair’s color, but the product’s color. 

[crisbaysauli]

I heard Dr Straetsmann has a natural oil thickener. You might be interested.

[crisbaysauli]

@Perry, that specifically is my problem. The marketing team I’m working with wants to join the bandwagon with regards to Argan and Collagen. But as Mr. Bobzchemist pointed out, these information are top secret! So the only way for us to substantiate our claim is to have the tests done?

[crisbaysauli]

Dr. Stratemans has this. Look at ther Dermosoft line.

[crisbaysauli]

I had a situation where I am faced with two ester-cs. One is magnesium ascorbyl phosphate (MAP) and the other is sodium ascorbyl phosphate (SAP). I chose the latter since literature says that SAP is more water soluble than MAP. Unlike Vitaamin C, SAP and MAP are more stable and does not turn yellowish, especially when used in emulsion.