Gunther

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Gunther
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  • Do all those extracts and oils have any useful and scientifically proven purpose? Most likely they don't So get rid of them (or reduce them to claim ingredient levels), simplify your formula to avoid potentially destiabilizing ingredients.
  • Most moisturizers are useless in rinse off applications. They have too little time to act to do anything useful before being rinsed off and end up in the drain. Cationics, i.e. some Polyquaternium, PEG-7 Glyceryl cocoate or Cocamide DEA may have so…
  • You can do fine with a SLES + CAPB + tiny amount of salt as a body wash. To thicken Na lauroyl sarcosinate you'll need some thickener like Crothix, which greatly increases costs. For preservatives: methyl paraben <0.4% propylparabeb <0.14% E…
  • Isopropyl alcohol smells worse and may be more drying to the skin (albeit skin drying by alcohols is overstated). On the other hand, IPA is a much better solvent than ethanol is so check to make sure ethanol dissolves the other ingredients. You ca…
  • shuchi said: @Gunther My supplier is a reseller. I asked for cetrimonium chloride and the label reads 'cetrimide'. Since I have a fatal passion for cosmetic formulation, I am trying my hand at it. Otherwise I am a lawyer and a finance professio…
  • Surfactant levels are fine SLES 9.8% active Na lauroyl sarcosinate 3% active CAPB might be a bit high, 4.8% (but it shouldn't increase slipperiness, just increase costs). Try without glycerin. It does nothing in rinse off applications. Please cond…
  • There are studies that prove that some Polyquaterniums and silicones can adhere to hair filling up the damaged spots, smoothing it out. i.e. Google: The Influence of Polyquaternium-7 on the hair properties Morphological analysis of polymers on ha…
  • PVP lasts quite a long time on hair (it actually lasts until it's washed off) You can just use more of it as needed.
  • shuchi said: Hi, I was quite impressed with the look, feel and fragrance of my conditioner. On trying it, I instantly got a headache and felt slightly tipsy for a while. Will be happy to bust the possible error in my formulation which was as b…
  • Any film on skin can work as an anti-pollution barrier. You can devise a test where you apply a petrolatum or silicone containing skin cream, then spray some dilute acids (or other chemicals) to mimic acid rain The petrolatum or silicone film shoul…
  • PVP dissolves in water. PVP can provide a nice hold on its own so I don't think you need any extra acrylates polymer. By non-aerosol do you mean it will be sold in a pump spray bottle?
  • Even if you don't have any oils, you still need an emulsifier to emulsify the water insoluble fatty alcohols or fatty acids (often needed to thicken the formula).
  • I do believe panthenol can do something beneficial in skin applications (for leave-on applications, it is totally useless in rinse off ones as it all goes down the drain) Not surprising since panthenol structure is roughly similar to glycerin which…
  • @Aziz @Belassi Sodium hydroxide would look nasty on a label. Even if harmless, tiny amounts are used, customers would perceive it as harsh. So do strong mineral acids. Hence my question.
  • My point is Wouldn't strong mineral acids like Hydrochloric, phosphoric or sulfuric acids look too harsh on an ingredient label? Even if they're used in tiny amounts, some customers who know no better would get scared just by reading that. Therefo…
  • You can do some stochiometry math to find out how much TEA do you need to neutralize acids then you can so some pKb math to find out how much TEA is needed to rise pH once the free acids have been neutralized.
  • Pharma said: Ketoconazole is an antifungal agent, it only kills fungi . Newer research suggests ketoconazole may have some anti-DHT activity In this paper, evidence is presented to support the hypothesis that ketoconazole 2% shampoo h…
  • That study was only meant to demonstrate that hair absorbs some panthenol. This paper shows the same thing http://www.healthart.gr/images/pdf/7.AQUARECALM cream file.pdf D-PANTHENOL.pdf but coming from a panthenol manufacturer it must be taken with…
  • This study proves that some panthenol is absorbed by hair https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4794562/ I tried a simple experiment on myself I sprayed some panthenol dissolved in water, and compared it to some bare water (leave-on) and hai…
  • @Pharma what additional antioxidants do you suggest? Are BHT and propyl gallate fine when combined with Sodium metabisulfite?
  • 1 Lanolin is useless, remove it. 2 Same for glycerin 3 What's silicoid? A silicone? If so, how is it emulsified? 4 Glycol distearate is tricky to use on its own, you'd better get a ready-made, ready to use pearlizer that's already emulsified. 5 …
  • For rinse-off products, about only silicones (and polyquaterniums to a much lesser degree) have good enough deposition (if properly formulated). For leave-on products you can add silicones, coconut oil, and panthenol. All of them have scientific s…
  • reddymandy said: Hi, I'm looking for formulations for dish wash liquid and an all purpose cleaner. Must be in tablet form, dilute in water and use. Similar to effervescent tablet. Dish wash tablet is for hand wash and not dish washwer Pl…
  • If this product actually reduces freckles, spots or any skin pigmentation you can be sure it ain't because of any Vitamin C It likely contains something like hydroquinone as an UNDECLARED INGREDIENT. BTW they should rename it to LOL' not real
  • Gunther said: Gunther said: This one felt nicely conditioning with mild cleaning as desired but it has almost no foam: Phase A. Water 60% Polyquaternium 0.7% Triethanolamine 0.05% Heat and stir Phase B Add the following ingredients t…
  • We "dry" mix LABSA with SLES to form a paste (in a water bath as it warms itself up) then add some water, allow to hydrate/dissolve Then slowly pour NaOH solution Then color and fragrance.
  • Large industrial-scale tanks have some welded, protuding marks to top it off with some extra water compensate for evaporation. You can do the same, just don't blindly trust the beaker marks as they're often way off Check the marks with a quality gr…
  • This study shows that despite using Na-metabisulfite, undegraded hydroquinone will still drop to < 50% in 12 weeks So Sodium metabisulfite is no silver bullet, albeit the cream pH ain't mentioned in the study at all. http://citeseerx.ist.psu.edu/…
  • You can also consider a low pH to help hydroquinone stability The conventional pH for hydroquinone topical formulations is preferably acidic, and generally below or close to a pH of 4, even though this can be harsh to the skin and possibly other …
  • @Gordana you'd need the SE grade glyceryl stearate as previously mentioned. By the way for hand creams, you may wish to look into factory, ready made emulsifiers that will provide better stability and skin feel. See what emulsifiers you can buy in …
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