[vitalys]

Yes, in most the cases Cetyl or Cetearyl Alcohols are a culprit. However you may try to stir it slow in a few days - it helps with many formulations to get the same viscosity you have achieved initially.

[vitalys]

Thank you David for clarification. FDA says that when you begin to manufacture OTC product according the monograph you don’t need their approval. Now, it makes sense.

[vitalys]

Thanks Perry! It finally works !

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Sam, I guess you may try some of the Lubrizol’s Avalure family of products.

[vitalys]

@wannabechemist Nice input! Indeed it’s interesting.

[vitalys]

@dmtcbrands, if you use quats in your formulation - it may cause the rust easily

[vitalys]

@milliachemist Thanks for your thought
@bexy1974, nice input! Indeed, I guess cosmetic chemists who want to be leading in their creations should follow the fashion trends. I have recently scrutinized how the Fashion impacts the cosmetics development. For example: When the “all natural trend” appeared on the stage, Cosmetic companies began to offer less perfumed cosmetics or even “no perfume) at all, When in 80’s there were a lot of “fantazy scents” in perfumes, in 90’s the trend was changed for mostly floral scents, the “smells of nature” - air, water and even minerals, using less colorants in regular cosmetic products like shampoo etc.. Or e.g. when the fashion for high heels appears, the Cosmetic brands ( which are well tuned for the fashion trends) start to release more foot care products. I can cite a lot of samples of those impacts. So, I think the following the fashion trends helps to develop new leading cosmetic products. Sometimes it allows to conquer the competition within the market.

[vitalys]

@joseg - what kind of anionic emulsifier do you use? it would be also important if you could tell the approx.% of the ingredients, purpose of this emultion and why it’s interesting for you?

[vitalys]

@Bobzchemist, No, no teasing ! I didn’t mention anything but funny word combination and I didn’t expect any misunderstanding. I’m sorry if the kidding caused such misunderstanding

[vitalys]

Well, Now I know the source of onions ) ) )

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Thank you Ben !

[vitalys]

I recall we have learned the method of stabilization the Vit C in the Medical University and I have found it. So, you could try it. Stabilization ingredients are Sodium Sulfite with the presence of Sodium Bicarbonate.

Here are the formulation:

Ascorbic Acid -10.0%

Sodium Sulfite -0.2%

Sodium Bicarbonate - 4.7%

Water - ad 100.0

First the water should be boiled and cooled in a closed jar - it helps to rid the oxygen off the water.

Then dissolve the sults and put the AA. Keep in a dry cool place in a dark glass container.

Regularly they sterilize this solution. But I guess it would be presserved as well.

Th pH of this stabilized solution should be 6-7 which is not bad for the skin as well.

[vitalys]

Thanks Perry! That’s what I assumed. Also, I couldn’t find in any FDA papers the mention that what they mean “affect skin structures” Do they mean lively or dead tissues?. For instance - hair color creams - they obviously impact the hair ( dead tissues) as well as “cuticle removers” also remove “dead cells” away.Well I guess I definitely have to attend the conference in September.

Again, thank you for yor input

[vitalys]

I don’t have any sample formulations, but I know that it includes Water, Texapon 70, Propylene Glycol, Hydroxyethylcellulose. More Hydroxyethylcellulose you put in your formulation the bigger bubbles you will get.

[vitalys]

David, I think the deodorant base stick is not suitable here. I think you may want to use any base for color cosmetic sticks. I remember I have made very simmilar product and the base contains approximately the following -
Cetearyl alcohol ~20%
Ceteareth 20 ~ 25%
Shea butter~7-10%
Aloe butter~ 5-7%
Soy wax~ 10-20%
add some liquid emolients- Isopropyl Myristate and alike
You can even make the clear stick base containing water and ceteareth 20 - it’s quite tricky in preparation but resulting in nice feel and product esthetics. I need to revise my records so I could write back with the formulation of this clear base.

As the astringent try Tannin 2-4% in you formulation. It has perfect capabilities. I have tried a lot of astringents but I find Tannin the best one in cosmetics.

[vitalys]

I feel the strong doubt that any form of AA other than the pure acid would be effective on skin. It is the main issue related to this acid.

[vitalys]

@nasrins, I guess milliachemist talks about basic concepts - not details

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Alexandra, What kind of help do you need ?

[vitalys]

Stearate based creams are the soaps, which could exist only at alkiline pH range.

[vitalys]

@vjay, The difference is viscosity of those two types of the same sunbstances.

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DavidW, My company is manufacturing very simmilar formulations for years and we don’t use any preservatives for them. They are pretty useless here.

[vitalys]

Ups…. the link didn’t appear http://www.floratech.com/fileMgr/upload/files/TestMethods/APPc11.pdf

[vitalys]

I hope, that’s what you’re looking for

[vitalys]

They could be, but I guess you should try the formulations with those polyphenols and estimate your trials. I know they are pretty expensive though. Do you wish to use antioxdation properties for your product or to your skin?

[vitalys]

….. and both have sulfuric groups