[Chemist77]

Lanolin Anhy?????

[Chemist77]

https://chemistscorner.com/cosmetic-formulation-basics-styling-gel/

I guess @Perry recommended the same too. 

[Chemist77]

U mean the ones with fluorescent pigments????? Base plus fluorescent pigments.

[Chemist77]

@MarkBroussard Thats a wonderful idea and its like knocking out the product  which is precisely nipping the problem in the bud. 

[Chemist77]

@MarkBroussard

Limonene, Hexyl Cinnamal, Butylphenyl Methylpropional, Benzyl Benzoate, Linalool, these few are in LOI of the first product and they are part of a fragrance generally. So I doubt if the first product is fragrance free. 

The second LOI has orange oil which imparts its own smell to the product and hence they skipped the fragrance in it, PROBABLY. 

So just to support @Bobzchemist view I would definitely prefer a knockout experiment to check though it’s gonna be a lengthy one given the lengths of LOI. 

[Chemist77]

@MarkBroussard

Bang on money, I am using the S&M dip slides and I am pretty much satisfied. Especially it gives me enough confidence to despatch sample to Intertek/SGS when I have a requirement of third party certification for certain exports. 

[Chemist77]

Oh we all are going to hang here till @Perry decides to hang this site  )

[Chemist77]

Thank you Perry for your absolutely wonderful effort and making us richer with so much of knowledge and giving us a great opportunity to interact with people from all around the globe. 

I am more than a year old now here on corner and I can tell you that this has been my best time to learn so much. 

You all have a great year too. 

[Chemist77]

@nasrins Carbomer which is a HASE polymer thickens by virtue of charge repulsion when the emulsion uncoils after alkaline hydrolysis, now add salt to this and you compromise the charge repulsion of the polymer molecules and once that is compromised the viscosity drops. 

Hope that clears it for you and I hope someone can present it in a better way if I am still unclear. 

[Chemist77]

Eventually the color shade matching lies in the eye of the beholder 

[Chemist77]

First of all salts and carbomers together are a big NO, now coming to the choice of surfactants and formula you can either adopt a sulfate based or sulfate free and still claim enriched with NATURAL OILS. Also thickening with HASE polymers and then expecting final pH as acidic wouldn’t be my choice. If at all you have to use then try Aqua SF1 but again you would have lots of persistent aeration with this polymer if you are not careful with your mixing. Not being sure about your final costing and target customers you can use Glutamate VLT (as @Belassi has suggested this in many earlier posts) if you go the sulfate free way otherwise if it’s a regular sulfate based formula then no issues at all. 

Maybe for natural concept you try to find Ecocert products to choose the ingredients accordingly. 

[Chemist77]

@Lililapomme I suggest you check ulprospector.com, thats the place you can get much information compared to our specific inputs. 

[Chemist77]

1,3-Propanediol is usually propylene glycol. 

[Chemist77]

@ozgirl Agree with you, switch to Hydroxy Ethane  

[Chemist77]

Agree with @Belassi, check the domestic RO (reverse osmosis) plant and depending on your requirement of GPD (gallons per day) you can make the choice. Make sure the filters are changed regularly and the TDS check is done on daily basis to maintain the quality. 

[Chemist77]

Take out Carbomer and you can try Veegum HV or Veegum Plus or Laponite or HEC or Xanthan.
BTW I really can’t make a head or tail of what you have written, I could see only the 20% ZnO and that Carbomer 941.

[Chemist77]

@Sarah I have used the same and it has a wonderful spreadability, but for one to one replacement of 1401???? 

[Chemist77]

Yes I think it’s the case of fragrance gone bad as you mention that the other parameters are OK (as sometimes micro contamination can affect all or any of these parameters). But I would still check for micro contamination just in case. Or maybe same formula with another fragrance just to confirm.
As a normal chemist I would do the same procedure what you have done and I would definitely like to know if there is some specific test as well for this aspect.

[Chemist77]

Actually it’s more like 2 separated phases e.g. a hair product I have seen where there is an oil phase and a aqueous phase and the emulsifier being omitted to give this typical look in a clear container. 

[Chemist77]

Maybe in a 2 phase liquid products but these these are pretty rare otherwise it has been seen as a flaw only in general.

[Chemist77]

Since it has been extensively used in soap bars, I am guessing it is supported at higher pH as well but this is totally my thought. I am not sure what is the composition of your recipe but why don’t you just try it out and check.

[Chemist77]

Well to some extent I agree with you @David as there is too much negative publicity for the old to enable the entry a new hero to arrive but there is in fact a build up in the form of a film which stays on the hair through several washings but on the upside it repels further build up and since the film is transparent, it provides a shiny appearance too. The film supposedly locks the moisture too.
Depends on the formulator what to choose.

[Chemist77]

I think we have had a similar discussion in the past and there was this issue of color change with the incorporation of mud but that was with Salicylic acid in some other world. For this I am guessing

1. Why would you add mud (even if it is sterilized aqueous solution or not) to a product whose primary function is to clean the hair and scalp?
2. What kind of shampoo is it, whether ionic or sulfate free?????? Because I am guessing you are going to have charge clash in a charged shampoo (sulfate based and similar kinds)?????
3. Even the maximum prescribed quantity of EDTA won’t suffice if the mud has high ion content in IMHO.

But why don’t you add and see how it performs, chemistry is all about trials and experimentation.

[Chemist77]

Yeah you are right, virgin would be non treated but damaged by other factors like sunlight, pollutants and various external environmental factors. Only the extent and severity is different, this is purely my understanding and this is what I am sharing with you. But for sure (proven by studies) the deposition on a virgin and treated hair is definitely too much different because of the charge factor.
As for your deep conditioning I would use a combo of Stearamidopropyl Dimethylamine and Disteardimonium Chloride with 2% and 1% respectively to start with. Thickness can be adjusted by starting with around 3% fatty alcohol.

[Chemist77]

The extent of negative charge on virgin and treated is always different, so the deposition would vary. Although I am not sure how virgin hair can be damaged (maybe you can explain), virgin itself implies something not damaged and hence very little affinity for deposition. Anyhow Amodimethicone tends to build up and its hard to rinse off even after repeated shampooing. 

Disteardimonium Chloride has 2 stearyl alcohol chains and 2 methyl groups whilst Behentrimonium Chloride is one behenyl chain and 3 methyl groups.