[Doreen]

@ngarayeva001
skin is a natural barrier and this product won’t restore lost collagen

I think this is your answer.

I’d say hyaluronic acid of any weight is not worth the high price if used in cosmetic products, but this is only my personal opinion.

[Doreen]

Personally, I have never seen C12-15 Alkyl Benzoate being used as carrier for herbal infusions, usually it’s soybean or sunflower oil.
Maybe it has something to do with the fatty acid profile, polarity or the price, I don’t know, maybe other forum members can help.

Good luck!

[Doreen]

@Microformulation
I’m sorry I was just being mildly sarcastic when I read “I have a question ..as I do not use any makeup because of all the chemicals” when I clicked on the name of this person.
It’s late here and I’ve read too much chemophobic stuff for one day. :sleeping:

Re: your question. I’d say something from inside the shell, something contracting, but I’m not sure.

[Doreen]

Depends on your definition of safety.
It is natural of course, but how would you preserve? It came straight out of a chicken’s butt… E. coli, Salmonella etc… :mask:

But why would you want pulverized egg shells on your face? :smirk:

p.s. Eggshells also contain chemicals. Calcium carbonate for example. (CaCO3)  :# 

[Doreen]

(comment is already mentioned)

[Doreen]

:joy: :joy:

[Doreen]

@Dtdang
I took the liberty to read some more of your questions/threads, and would like to emphasize that I don’t recommend to create exfoliants like these (with AHA acids or others, like SA) if you’ve just started to learn making cosmetics.
I wouldn’t even recommend using acids and (strong) bases at all, before you know exactly what you’re working with and what the potential dangers are/can be.
(Please don’t take this the wrong way, it’s your safety and well being I have in mind.)

A tip if you do want to make exfoliants: you can visit Susan on SwiftCraftyMonkey’s website and start to make gentle sugar scrubs for example. Susan is a superb teacher and has great formulas.

The exfoliant example in my first message I gave was just to show I didn’t even need oils for my dry/sensitive skin then. And the point of my message was that you can use practically any kind of non volatile oil as emollient and that the expensive ones are advertised for marketing reasons only. Read @Microformulation ‘s reply about stability of grapeseed oil. Indeed best to choose the stable ones. You will find out by learning more about oils, why they oxidize and why some don’t or hardly do.

Side note about the expensive oils: I also meant using these pure on the skin (next to using a few % in creams). No more or less wrinkles/pimples than any other oil.

[Doreen]

@Dtdang
I created a formula (Paula’s Choice liquid 2% Salicylic Acid exfoliant as benchmark) and tweaked it here and there.
The original pH of the SA solution is around 2.2, I adjust it (rather early in the cooling phase) to at least 3.0, otherwise the SA crystallizes out (if you keep it too long below pH 3), later when it’s room temperature I adjust again to around 3.8 (with NaOH). 

[Doreen]

I’ve made my creams with cheap refined sunflower oil from the supermarket and also with the ‘crème de la crème’ like olive squalane, camellia japonica oil, kukui oil, prickley pear oil, rosehip kernel oil (together with rosehip seed extract and rosehip fruit extract), pumpkin seed oil, chai oil, oat oil…….

I have found no single difference in the effect. I’ve never had comedones in my life and only now and then a pimple, but I didn’t get more or less from pure vaseline, coconut oil, or the finest of pure oils. Also my skin didn’t ‘suffocate’. :joy:

A waste of good money, but a lesson learnt. Most beauty bla bla bla about oils is just mostly marketing bullshit.

p.s. I forgot my moisturizers on vacation and couldn’t be bothered to buy others. The only thing I used on my skin those weeks: my self made 2% salicylic acid liquid exfoliant with 15% polyols once a day (no oils or any other lipids in it). My skin looked great and felt soft as a peach, the polyols in it obviously had enough moisturizing effect, because it didn’t feel dry at all! (I have sensitive and dry skin btw!)

[Doreen]

@Perry
Having said that I certainly wouldn’t take health advice from a forum.

This.
Special health advice is just best left to medically trained professionals.

Re: waking up.
What about a cold shower and a short exercise?
I also like to drink tea. 1st flush Darjeeling :yum: As far as I know black tea contains more caffeine than white or green. Still less than coffee though.

@DAS
Tip: make your green tea with water that has cooled a bit (around 80C), boiling water makes it bitter.

[Doreen]

And some microbes thrive at a pH of around 2 (Helicobacter pylori in stomach).

[Doreen]

Isn’t it all dose dependent? I wouldn’t like 96% or even a 70% solution on my skin, but the usual % in cosmetics have never posed a problem for me anyway.

[Doreen]

Isn’t the skin a wonderful organ? Be thankful that only very, very few substances have the ability to be absorbed transdermally!

[Doreen]

Hi,
In this thread you can find chemists wordwide who offer their services:
https://chemistscorner.com/cosmeticsciencetalk/discussion/137/need-formulating-services-here-are-some-contacts
Good luck!

[Doreen]

@Gunther
Some health advices are probably best left to their GP c.q. specialist.

FYI, fT4 is usually only checked if TSH is not within the rates (lab dependent though) and (f)T3 rarely, and is certainly not a standard test.

Just my humble opinion: I don’t think this forum is the right place for asking and giving health advices/instructions.
@Perry ?

[Doreen]

This!!!! ^
Couldn’t agree more with @Microformulation

[Doreen]

@jeremien
You’re welcome!

I find it especially interesting to read in the link mentioned above, that it’s the sodium salts that seem to have stronger antimicrobial activity, rather than their acid forms. Seems the exact opposite of sodium sorbate and sodium benzoate for example!
Also a big advantage is the better solubility of the salts.

I can only find a supplier for sodium anisate (Evonik).
The meat industry, mentioned in the link, must get it somewhere, perhaps food grade only.

Or experiment by synthesizing the sodium salt from the levulinic acid yourself?
Would also be a nice project for @Belassi if he had the time! 😉

Good luck! :kissing_heart:

[Doreen]

Does it have to be the sodium salt? I can find a trusted supplier for levulinic acid (attached pdf file).

(Edit: I have read here that the sodium salt of levulinic acid probably has better antimicrobial activity than the acid. Very interesting read.)

[Doreen]

@Sibech
Isn’t that ice cream between the layers of gingerbread and right under the meringue? It’s a Christmas version btw.

[Doreen]

Is shaving an option?

[Doreen]

Look up the list of ingredients on the page in your link. Order all of these and things will probably just work out fine from there.
If it doesn’t, I’m sure any chemist on here will share his/her formulas on here for free, just like that.

[Doreen]

I want to make Baked Alaska. I have cream, milk, vanilla beans, butter, sugar, whole eggs, milk, flour, baking soda, cream of tartar, salt, egg yolk, egg white, etcetera, but it doesn’t turn out right and looks a mess.
Please help me make it become like the one in the picture.

[Doreen]

Good luck! :blush:

[Doreen]

Hi @Biochemist!
Sorry, didn’t read your question sooner, I was traveling (not a lot of WiFi around).
The formulation did indeed seem stable, no discolorations, pH drift etc.

[Doreen]

No incompatibilities as far as I know. I also combine these two (oftentimes along with tocopherol and panthenol). My target pH is also around 5.5 (5.3 - 5.7).