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High sodium citrate in P&G shampoo
This is ingredients list of a herbal essences shampoo. The second ingredient after primary surfactant is sodium citrate so it might be ≥1%. <div>
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What is the benefit of this high amount of sodium citrate in a shampoo?
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Ingredients/ingrédients: Water, Sodium Laureth Sulfate, Sodium Citrate, Sodium Lauryl Sulfate, Glycol Distearate, Cocamidopropyl Betaine, Sodium Chloride, Cocos Nucifera (Coconut) Fruit Extract, Zea Mays (Corn) Silk Extract, Orchis Mascula Flower Extract, Fragrance, Cocamide MEA, Sodium Xylenesulfonate, Dimethicone, Sodium Benzoate, Citric acid, Tetrasodium EDTA, Guar Hydroxypropyltrimonium Chloride, Polyquaternium-6, Methylchloroisothiazolinone, Methylisothiazolinone, Blue 1.
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https://herbalessences.com/en-us/our-products/hello-hydration-2-in-1/
herbalessences.com
Hello Hydration 2 in 1 Moisturizing Shampoo + Conditioner | Herbal Essences
Herbal Essences Hello Hydration 2 in 1 moisturizing shampoo and conditioner will leave your hair clean and hydrated in one simple step.
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11 Replies
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My guess is to control pH.
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In sush level I don’t think that for pH reason @Abdullah
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Thanks.
I think there should be something else that citric acid do from a rinse of prod8.
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It’s also added to increase viscosity. I used to do that in a liquid dishwasher. You can also check some patents from P&G and they will mention the same.
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I saw 1% citric acid in an example formula in one of their parents buy the patent was about something else.
I am wondering if it can be beneficial as a water softener and also to remove cation ions so if you apply a cationic surfactant conditioner after shampoo, it deposit more. What is your opinion on this?
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I also think that it will be for water softening but as it has EDTA and and 0.1-0.2% percentage of of it is enough to make the product water soft, what will be this high amount of citric acid doing.
It is highest after SLES.
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They use sodium citrate with citric acid to create a buffering system. As a side benefit, sodium citrate can sequester cations (water softening) and help to build some viscosity. Using it mainly as a water softening agent is not advisable since it forms weak complexes with metal ions comparado to EDTA.
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Thanks
Do you know any patent with ≥1% citrate in shampoo?
Please share if you have
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I actually haven’t found many Procter patents where they disclose the amount of citrate. I found this one though where it’s at 1% (which is still high): https://patents.google.com/patent/EP3522858B1/en
One thing I forgot to mention is that salts also help at some level, to stabilize the LGN.
patents.google.com
EP3522858B1 - Personal care compositions substantially free of sulfated surfactants and containing a gel network - Google Patents
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