MarkBroussard
About
- Username
- MarkBroussard
- Joined
- Visits
- 9,267
- Last Active
- Roles
- Member, Professional Chemist
Comments
-
@smallpiglet: I developed the line for one of the brands you mentioned in your note above. Reach out if you would like some pointers.
-
@RDchemist15 I suspect this is simply a formulating "style" issue ... perhaps it has to do with the dissolution of the NaCl itself as opposed to having anything to do with the SLES. Regardless, there should be no difference in the end…
-
@qwerty: The active ingredient in the Brazilian Blowout is Glyoxilic Acid ... it funcitons to break disulfide bonds to aid in straightening the hair. Similarly, the Olaplex active ingredient breaks disulfide bonds and insert a long "bridge&qu…
-
Quite honestly, this is not as big an issue as it's being made out to be ... in a cosmetic product, being off by a couple of percent is not really that big a deal imho ... remember, you're heating up to 70C to 75C, so you will get some water loss, b…
-
@steamedrice If the Bosisto's Tea Tree Oil contains only Tea Tree Oil as its sole ingredient, then it is no different than adding Tea Tree Oil from any other supplier, so there is no issue with using it other than it may be more expensive than oth…
-
Add 5% additional water pre-heating and then put a watchglass on the top of the beaker during heating and processing.
-
@sean9980 The purity of your NaOH is not really of any significance. Of course, higher purity means less "contaminants" ... but, for these purposes the issue is getting enough NaOH into the mix to raise the pH to the point where the Car…
-
Without the list of ingredients, it is not possible to get any insight into how they may have achieved this effect.
-
Ha! ... It's a really cool idea to get children to wash their hands for a long enough period of time. Do you happen to have a list of ingredients?
-
(Quote)
-
@Perry: Yes, of course there is a positive bias in published research. It's again a matter of the economics and the value of time ... unless your "negative result" research disproves something that was either generally accepted to be t…
-
These "instant wrinkle remover" products have been around for quite some time ... you can add an acid to lower the pH. The most popular one is Plexaderm. As it dries, the waterglass forms a film that contracts giving the optical illusion…
-
@Leo: If you are able to conduct your own "clinical studies" on your cosmetic concoctions validated by an eyeball analysis ... good for you. But, that is not necessarily a pracitcal approach for most practitioners in the field of cosmeti…
-
@Graillotion Well, not necessarily ... Sodium Phytate can be used a both a pH adjuster and a chelating agent, but I think Sodium Glutamate Diacetate may be a bit better as a chelating agent. Yes, Gluconolactone and SGD both function as chelating …
-
"Over 95% of the published scientific work is fake news from industry...." Those are only two from a multitude of studies on Hyaluronic Acid ... If this is your belief system, that virtually everything published in scientific journals is …
-
(Quote) Seriously? ... this falls in the category of Fake News. HA is water-soluble, there are a couple of HA dispersions in oil, but HA is not oil-soluble. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3970829/#:~:text=Conclusion%3A%20The%20new%2…
-
@Rimshah: The Skinceuticals patent covers a pH range up to 3.5. Honestly, I would not fool around with a company based in China who obviously has no issue proposing a formula to you that would violate the L'Oreal patent. If they cannot be more cr…
-
@rimshah: This is virtually a direct knock-off of the Skinceuticals CE Ferulic Serum and would appear to be in violation of the LOreal/Skinceuticals patent which is still valid. The company in China tried to cover themselves by altering one ingred…
-
From the description of the 3 products, it looks like you have a balm stick and two balms in jars ... but, none of these would appear to be for use in a high water enviroment or applied with wet hands. I would not appear that water ingress from nor…
-
@mhart123 Why on Earth would you complicate matters by adding a preservative that is not compatible with the solubility of your product ingredients when you could just add some Caprylyl Glycol + Glyceryl Caprylate (and) Glyceryl Undecylenate and b…
-
If the pH of the end product is below 6.0: Gluconolactone + Sodium Benzoate + Phenethyl Alcohol as preservatives, and Sodium Glutamate Diacetate + Propanediol and/or Pentylene Glycol as potentiators
-
I'm currently working wound healing products for a couple of different clients. Pro-Inflammatory is not necessarily a bad thing, it all depends what effect you are trying to achieve. You might find this interesting reading: https://www.woundsrese…
-
@Sasse: You can try Gluconolactone (and) Sodium Benzoate + Phenylpropanol EHG and pair those up with a chelating agent ( Sodium Glutamate Diacetate ) and a preservative potentiator such as Pentylene Glycol or Propanediol and you should be just fine.
-
@h__w: The average contact time on the skin of a cleanser is 20 seconds and then it is rinsed off. While you may have some ingredients that some component of may deposit on the skin post-rinsing ... glycerin, refatting agents, these are few and fa…
-
@almahagert: There are plenty of chemists on this site who may be able to help you: https://chemistscorner.com/cosmeticsciencetalk/discussion/137/need-formulating-services-here-are-some-contacts#latest
-
The HA in a cosmetic product such as a serum or cream is already fully-hydrated when applied to the skin, so its ability to draw water from the skin in deminimus, if at all. Higher molecular weight HA, when applied to the skin, is too large to pe…
-
@Learntounlearn: You're getting hung up on the numbers adding up to 100%, which really is not relevant if you are making final adjustments to adjust pH, etc. For pH, just make your batch, measure the pH, and then add whatever quantity of pH adju…
-
What Molecular Weight HA are you using? If it's a white film, it's probably the HA. Q: Why are you using both HEC and Xanthan Gum? ... you only need one of them.
-
I would recommend that you dissolve the SA in the oil phase when you heat to 70C prior to combining the phases to form the emulsion.
-
The best performing HA is in the range 120 - 200 kDa ... it's a wound healing grade generally used at 0.2%. It all depends on what you want the HA to do: Super Low MW HA will penetrate the dermis. Higher MW HA forms a barrier film on the surface …
Latest Q&A session
Forum Instructions
Howdy, Stranger!
It looks like you're new here. If you want to get involved, click one of these buttons!
