Preservatives are an essential ingredient for cosmetic products that contain water. They are intended to ensure that we develop in a cosmetic bacteria, mold, yeast and other unwanted guests.
For the function, to make the environment inhospitable to these microorganisms, preservatives are not substances "harmless" but they are all more or less potentially irritating, so it is important to choose the most suitable preservative us always respects its percentage of use.
The preservative we can keep our product safely at room temperature for a certain number of months (which varies depending on the type of preservative) without preoccupation that goes bad. Without a cosmetic preservative rather short-lived, must be stored in the refrigerator and consumed within a few days then we have to do it again: uncomfortable! So preservatives alive:)
The preservatives may be soluble or fat soluble. As I alluded to above, only the cosmetics that contain water in need of a preservative, and are emulsions (ie cream), aqueous lotions, detergents with surfactants.
water soluble preservative is fine for these preparazoini because it binds to water and safely run. A fat-soluble preservative instead needs to bind to a share of fat to function, then in a cream will do just fine because the cream contains some fat, but not watery in a tonic, But you can use it disperses in the water solubilizing.
cosmetics that do not have the aqueous phase, such as butters, oils, mineral makeup, the lip stick, etc.. do not need a preservative itself. The most that can use an antioxidant that prevents oxidation and thus rancidity, fats, such as vitamin E (tocopherol).
Some preservatives need to work a certain pH, then every time you spignatta something you have to be always careful to measure the pH and adjust it, respecting the range, if we may so call it, our preservative.
For the function, to make the environment inhospitable to these microorganisms, preservatives are not substances "harmless" but they are all more or less potentially irritating, so it is important to choose the most suitable preservative us always respects its percentage of use.
The preservative we can keep our product safely at room temperature for a certain number of months (which varies depending on the type of preservative) without preoccupation that goes bad. Without a cosmetic preservative rather short-lived, must be stored in the refrigerator and consumed within a few days then we have to do it again: uncomfortable! So preservatives alive:)
The preservatives may be soluble or fat soluble. As I alluded to above, only the cosmetics that contain water in need of a preservative, and are emulsions (ie cream), aqueous lotions, detergents with surfactants.
water soluble preservative is fine for these preparazoini because it binds to water and safely run. A fat-soluble preservative instead needs to bind to a share of fat to function, then in a cream will do just fine because the cream contains some fat, but not watery in a tonic, But you can use it disperses in the water solubilizing.
cosmetics that do not have the aqueous phase, such as butters, oils, mineral makeup, the lip stick, etc.. do not need a preservative itself. The most that can use an antioxidant that prevents oxidation and thus rancidity, fats, such as vitamin E (tocopherol).
Some preservatives need to work a certain pH, then every time you spignatta something you have to be always careful to measure the pH and adjust it, respecting the range, if we may so call it, our preservative.
The preservatives that I use for now are sodium benzoate and potassium sorbate, are powders and granules, both water-soluble. It's very convenient to prepare a solution made with distilled water as follows:
- H2O 80 g
- 10 grams sodium benzoate, potassium sorbate
-
10 grams per 100 grams of product need to be kept 2.5 ml of this solution.
time ago I made a list of preservatives EcoBio interesting with its suppliers, which I reproduce here:
time ago I made a list of preservatives EcoBio interesting with its suppliers, which I reproduce here:
Tinosan
INCI name: silver citrate + citric acid
Who has it: Pharmacy Vernon
Hydro / Lipo: Water-soluble
Strength:?
Notes: afraid of the light! cosmetics preserved with him should be kept in dark bottles in the dark
Cosgard
Strength:?
Notes: afraid of the light! cosmetics preserved with him should be kept in dark bottles in the dark
Cosgard
INCI name: Benzyl alcohol, Dehydroacetic acid, aqua (Water). Who's got
: Aroma Zone
Hydro / Lipo: Water-soluble up to 1%. Soluble in alcohol.
Dosage: 0.2 to 1%. 0.6% Suggested
Hydro / Lipo: Water-soluble up to 1%. Soluble in alcohol.
Dosage: 0.2 to 1%. 0.6% Suggested
Naticide / Q Plantaserve
INCI name: fragrance
INCI name: fragrance
About have it: Aroma Zone, New Directions
Hydro / Lipo: fat-soluble, soluble in alcohol. Dispersible in water with 0.6%
Dosage: 0.3 to 1%. 0.6% Suggested
Preservative 12
Hydro / Lipo: fat-soluble, soluble in alcohol. Dispersible in water with 0.6%
Dosage: 0.3 to 1%. 0.6% Suggested
Preservative 12
INCI name: Phenoxyethanol (and) Ethylexylglycerine
Who has it: Aromantic
Hydro / Lipo:?
Dosage: 0.8 to 1%
Restrictions pH: pH is not particularly sensitive, you can use up to pH 12
Note: you can not use products that contain detergents.
Preservative K
INCI name: Benzyl Alcohol, Phenoxyethanol, and Potassium Sorbate
Who has it: Aromantic
Hydro / Lipo:?
Dosage: 0.5-0.6%
Restrictions pH below 5.5
conserved quantity: 1 year and a half to three years
Lexgard GMCY
Hydro / Lipo:?
Dosage: 0.8 to 1%
Restrictions pH: pH is not particularly sensitive, you can use up to pH 12
Note: you can not use products that contain detergents.
Preservative K
INCI name: Benzyl Alcohol, Phenoxyethanol, and Potassium Sorbate
Who has it: Aromantic
Hydro / Lipo:?
Dosage: 0.5-0.6%
Restrictions pH below 5.5
conserved quantity: 1 year and a half to three years
Lexgard GMCY
INCI name: Glyceryl Caprylate
Who has it:?
Hydro / Lipo:
Dosage:
Hydro / Lipo:
Dosage:
Note: also used as an emollient and coemulsionante
Optiphen
Inci name: Phenoxyethanol (and) glycol caprylyl
Who has it: Gracefruit, Lotioncrafter
Hydro / Lipo:?
Dosage: 0.5-1.5% pH
Restrictions: No
Notes: is the maximum temperature of 60 ° C
Hydro / Lipo:?
Dosage: 0.5-1.5% pH
Restrictions: No
Notes: is the maximum temperature of 60 ° C
Ecogard
Inci name: Dehyroacetic acid, Benzyl alcohol
Who's got : Bilby & Co
Hydro / Lipo:?
Dosage: 0.6 to 0.8%
Restrictions pH: 2 to 7
Hydro / Lipo:?
Dosage: 0.6 to 0.8%
Restrictions pH: 2 to 7
Geogard Ultra
INCI name: Gluconolactone (and) Sodium Benzoate
Who has it: lotioncrafter
Hydro / Lipo:
Dosage:
Hydro / Lipo:
Dosage:
Note: now they sell it by the name of NeoDefend and the incidence is: Gluconolactone (and) Sodium Benzoate
Unfortunately I could not complete the "boards" of some preservatives, because I did not , never used and do not know them well, and unfortunately not all sites show the complete technical specifications of products. So if anyone has any info as well write them in the comments which then published the post:)
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