Members Directory - Chemists Corner

ChemWizard

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February 7, 2014 at 9:12 pm in reply to: solubilizing salicylic acid in propanediol

L

ChemWizard

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February 5, 2014 at 9:15 pm in reply to: Mango seed?

@Bob, do you think just mango or pumpkin or papaya in liquid extract forms would still function as fruit exfoliators?

ChemWizard

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February 4, 2014 at 11:10 pm in reply to: Leave In vs rinse out conditioner?

Would an AHA peel be considered a rinse off or a leave on?

ChemWizard

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February 4, 2014 at 10:50 pm in reply to: Choosing surfactant blends for a low pH Glycolic face wash

@Mike, what about Methocel?/ any experience with it?

ChemWizard

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January 19, 2014 at 11:31 pm in reply to: Product Colour Fading

@padech, Benzophenone-4 at pH above 6 turns yellow…you can try lowering your final pH to see if that helps

ChemWizard

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January 19, 2014 at 11:26 pm in reply to: “Soaping/whitening” when cream is rubbed into skin

Olivem 1000 gives soaping effect. You can cut down the level and may use glyceryl srearate or sucrose stearate

ChemWizard

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January 14, 2014 at 11:02 pm in reply to: Choosing surfactant blends for a low pH Glycolic face wash

Thanks Krupa….Actually I tried Xanthan Gum and it actually works very well, I just dont like the final texture it provided..
I might cut down the level and see again!!

@Milliachemist, I know you mentioned Ammonium Glycolate for Thickening ALS….First of all, do you know any suppliers who distributes Ammonium glycolate in US?
Secondly, how can Ammonium glycolate help with viscosity? I thought it was just a pH adjuster or may be a neutralized version of Glycolic acid….
I appreciate your inputs!1

ChemWizard

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January 11, 2014 at 9:22 pm in reply to: How to deal with aeration while working with ALS in a cleanser?

Mentors,
With SF-1 and SF-2, after neutralization up to pH 6-7, is there a trick to reduce up to final pH of 3.5 without breaking the carbomers?
I have glycolic acid in formula which needs to be safely incorporated.
Any thoughts?

ChemWizard

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January 7, 2014 at 10:31 pm in reply to: pH of Sunscreen lotion

lol that really helps Milliachemist and Alchemist:)

ChemWizard

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December 25, 2013 at 8:26 pm in reply to: pH of Sunscreen lotion

@ Duncan, can you please explain surface Potential IIRC and how it effects stability?

@ Vijay, In my experience the combinatin of ingredients you wokring with wold change the color of your batch into yellow, if the pH is higher than 7. And, on the other hand, SPF with Zinc and TiO2 below 7 has shown instabilities.

I am not sure whats the right explanation for that, but I am hoping Mentors and experts here would have something to say!

ChemWizard

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December 18, 2013 at 11:38 pm in reply to: How to deal with aeration while working with ALS in a cleanser?

@Millliachemist, actually Arylapon TT build viscosity and SF-1 broke down at that pH.
Would PEG 150 distearate be stable at all pH levels?

ChemWizard

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December 7, 2013 at 8:19 pm in reply to: Physical Sunscreens and Dispersion

Does Pre-dispersed ZnO (for eg SPD-Z5 from Shinetsu) also need severe Homogenization ?

ChemWizard

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December 7, 2013 at 8:16 pm in reply to: Sunscreen formulation with Avobenzone

Guys, when we talk about photo-stabilization, does it mean discoloration due to light or temp?

I am working with a Sunscreen with AVO, OCT and OCM combination and it turns yellow at pH around 7..
What might be the culprit?

ChemWizard

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December 7, 2013 at 8:10 pm in reply to: How to deal with aeration while working with ALS in a cleanser?

But, I thought SF-1 need to be neutralized upto 6 for thickness? Kindly advise if I am mistaken!

ChemWizard

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December 5, 2013 at 10:02 am in reply to: How to deal with aeration while working with ALS in a cleanser?

Thanks all!

Do you think suggested thickeners would work at low pH (3.5-4) ?

ChemWizard

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December 4, 2013 at 6:18 pm in reply to: How to deal with aeration while working with ALS in a cleanser?

Thanks Vjay and Miliiachemis on aeration tip.
I have around 35-40 % AlS, 8-10% CAPB, little bit of PEG-7 Glyceryl Cocoate, Disodium Cocoamphodiacetate, and PEG 120 Methyl Glucose Dioleate

What ingredient shall help me give some viscosity here?
Also, its a low pH formula, would that matter with viscosity?

ChemWizard

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