Define preservative - Chemists Corner

Formulating

Define preservative

Posted by heraklit on October 14, 2014 at 6:19 am

What acts as preservative in this formula of a big brand anti-dandruff shampoo? Maybe Climbazole - Salicylic Acid?
Aqua** (Water**), Aqua (Water), Sodium Laureth Sulfate, Zinc Coceth
Sulfate, Potassium Undecylenoyl Hydrolyzed Wheat Protein, Glycereth-90
Isostearate, Laureth-7 Citrate, Cocamidopropyl Betaine, Sodium Methyl
Cocoyl Taurate, Capryloyl Glycine, Lavandula Angustifolia (Lavender)
Flower* Extract, Thymus Vulgaris (Thyme) Flower/Leaf* Extract, Glyceryl
Oleate, Coco-Glucoside, Gossypium Herbaceum (Cotton) Extract, PEG-60
Almond Glycerides, Propolis Extract, Saponaria Officinalis Leaf Extract,
Rosmarinus Officinalis (Rosemary) Leaf* , Butylene Glycol, Pelargonium
Graveolens Flower Oil*, Climbazole, Salicylic Acid, Cedrus Atlantica
Bark Oil*, Arginine, Panthenol, Disodium EDTA, Potassium Chloride,
Glycerin, Laureth-2, Alpha-Glucan Oligosaccharide, Citric Acid, Sodium
Hydroxide, Guar Hydroxypropyltrimonium Chloride, Parfum (Fragrance),
Linalool, Benzyl Salicylate

belassi replied 10 years, 2 months ago 6 Members · 10 Replies
10 Replies

nasrins

Member
October 14, 2014 at 8:47 am

and maybe benzyl salicylate..
Chemist77

Member
October 14, 2014 at 9:23 am

Benzyl Salicylate is essentially a component of the fragrance in the formula, and not a preservative. The anti dandruff agents seem to double up as preservatives and maybe one or two of the extracts too may help in preservation here.
MakingSkincare

Member
October 14, 2014 at 3:02 pm

Salicylic acid would take care of bacteria, if added at 0.5% and the pH is less than 4. The glycols help reduce water activity. The EDTA also helps the preservative. The inci name “Parfum” could be naticide or p-Anisic Acid/Dermosoft® 688 eco.
belassi

Member
October 14, 2014 at 4:54 pm

First, it appears to me as if the ingredients list is out of order, because I don’t think that CAPB would be lower in the list than, say, hydrolysed wheat protein! It appears to be a SLES/CAPB surfactant mixture so I would expect the CAPB to be at least 10% of this product while the wheat protein would likely be 1% or 2% at most.

Secondly, regarding preservatives, Propolis extract is a known antiseptic product and preservative (how to incorporate what is basically an oil soluble resin in a shampoo isn’t something I would like to tackle, though).

Climbazole is an anti-fungal which might (I really don’t know) offer preservation against common things like A.Niger. I suspect (without Googling it) that the essential oil of cedar may also offer antibacterial/antifungal activity.
nasrins

Member
October 15, 2014 at 3:37 am

I think salycilate derivatives has antibacterial characteristic and anionic surfactant has too
heraklit

Member
October 15, 2014 at 6:13 am

The ingredients list is from the official site of the brand. Thank you all for your responses.
OldPerry

Member
October 15, 2014 at 10:41 am

Can you tell us what brand it is?
heraklit

Member
October 15, 2014 at 5:53 pm

Of course:
http://www.apivita.com/hair/shampoos/anti-dandruff-shampoo-for-oily-hair.html
heraklit

Member
October 15, 2014 at 5:58 pm

Link is wrong. It’s APIVITA Propoline Anti-Dandruff Shampoo for Oily Hair
http://www.apivita.com a Greek big brand.
belassi

Member
October 16, 2014 at 1:47 pm

So, they’re using the properties of propolis, a bee-produced resin, in this. I experimented with propolis, but I found the solubility problems were enough to put me off using it. Usually it’s supplied as a tincture with an alcohol base.