Preservative Grapefruit Seed Extract
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100% natural origin
Antibacterial and antifungal: prevents the growth of bacteria, yeasts, and molds in cosmetic products containing water.
Helps extend the shelf life of water-based homemade cosmetics for approximately one month.
Preservation of all cosmetic products containing an aqueous phase (water, hydrosol, etc.)
Preservation of emulsions (creams, milks)
Preservation of cleansing products (shampoos, shower gels, makeup removers)
Preservation of aqueous gels and lotions
This version of Grapefruit Seed Extract is for cosmetic preservative use only; it is not suitable for internal use or for use undiluted on the skin.
This extract is a preservative for cosmetic use and is intended exclusively for this purpose. It has no documented therapeutic effects.
General characteristics
Dosage
0.1 to 1% Recommended dosage: 0.6% (of the total weight of your preparation)
pH
No limitation
Soluble in water.
Density
1.1
1 ml = approximately 38-41 drops
Insoluble in oil.
Use in homemade cosmetics
Creams & lotions, gels (except xanthan gum-based gels), lotions, shower gels, shampoos
Additional information
Challenge test carried out by our supplier
To ensure the preservation of your homemade cosmetics, we have selected an extremely concentrated quality, far more concentrated than dietary grapefruit extracts.
Its bactericidal effectiveness was validated through a challenge test. Challenge test: exposure of a cosmetic formula to bacterial contamination in order to test and validate the preservative system.
Tested formula:
Aqueous phase: tap water (30 g); non-preserved organic witch hazel hydrosol (30 g)
Oil phase: organic hazelnut vegetable oil (35 g), emulsifying wax No. 1 (5 g)
Preservative: Aroma-Zone Grapefruit Seed Extract (0.5 g, i.e. 0.5%)
0.6% Grapefruit Seed Extract | 0.18 g (approximately 6 drops) |
1% Grapefruit Seed Extract | 0.3 g (approximately 10 drops) |
0.6% Grapefruit Seed Extract | 0.3 g (approximately 10 drops) |
1% Grapefruit Seed Extract | 0.5 g (approximately 17 drops) |
0.6% Grapefruit Seed Extract | 0.6 g (approximately 20 drops) |
1% Grapefruit Seed Extract | 1 g (approximately 35 drops) |
Very good | Emulsifying wax No. 1, MF and VE emulsifiers, Emulsan, cetyl alcohol, soy lecithin, BTMS, conditioner emulsifier |
Average | Destabilisation may be observed, generally at low emulsifier dosages with: Emulsifying Waxes No. 2 and No. 3, Olivem 1000, Olive Douceur and Olive Protection Emulsifying Waxes. |
Low | Sugar ester (risk of destabilising the formula), organic Gélisucre (incompatibility with xanthan gum recommended in Gélisucre emulsions) |
Very good | Guar, Marshmallow, Acacia |
Average | / |
Low | Xanthan gum and carrageenan (INCOMPATIBLE - precipitation of white filaments) |
NB: Due to its incompatibility with xanthan gum, Grapefruit Seed Extract preservative is also incompatible with our Aloe Vera gel, which contains xanthan gum.
Preparation
Precautions
Precautions and allergens
Precautions for use
Allergens
Allergen-free
Add the Grapefruit Seed Extract to the finished formula when cold and mix well to homogenise.
Influence on the pH of aqueous preparations: This new quality tends to acidify preparations. It is essential to check the pH of your preparations at the end of the formulation and, if necessary, increase it by adding a little baking soda.
Aroma-Zone tips
Grapefruit Seed Extract is a 100% natural preservative used for relatively short-term preservation. We recommend keeping your preparations for a maximum of one month with this extract.
We recommend avoiding its use in microbiologically sensitive preparations , such as those containing fruit powders, plants, milk, etc., or cold emulsions.
This preservative has good antibacterial efficacy but is less effective on yeast and mould. To boost its antifungal effect, we recommend combining it with 0.5% Benzoate & Sorbate Complex or 0.3% Palmarosa essential oil.
Zero waste promotion: minimum use-by date June 2026
Quality
Natural origin, does not contain benzethonium chloride, parabens, or triclosan.
The formula of our Grapefruit Seed Extract has changed; it is now even more concentrated and water-based rather than glycerin-based, which makes the extract more fluid and therefore easier to dispense. All sizes are now available in the new quality.
Method of production
Produced from citrus seeds through fermentation processes with the addition of organic acids (lactic, citric and ascorbic acids).
Function
A broad-spectrum antibacterial and antifungal preservative, it ensures the preservation of cosmetic preparations containing an aqueous phase (water, hydrosol).
Composition
75% Citric extractives, 25% Water
Presentation
A pale yellow to brown liquid with a light odour, packaged in a glass bottle with a dropper.
Preservation
Store at room temperature away from moisture and light. Close the bottle tightly after use.
Precautions
Keep out of reach of children.
Do not swallow, avoid contact with eyes, do not apply undiluted to skin.
Follow the recommended dosages.
Always perform an allergy test on the inside of your arm (test the finished product or the preservative diluted to 1%), waiting at least 24 hours (ideally 48 hours) to observe any possible reaction.
Always check the pH of the products at the end of the formulation and, if necessary, adjust it with baking soda.
Dangerous. Follow the precautions for use.
Causes severe eye irritation. Causes skin irritation. (risks associated with the product in its pure form).
Environmental qualities and characteristics product sheet
Reference
01282 - Grapefruit Seed Extract 5 mL
Main Packaging Material
Glass bottle
Recyclability
Most of the packaging can be recycled
Reference
00852 - grapefruit seed extract 30 mL
Main Packaging Material
Glass bottle
Recyclability
Most of the packaging can be recycled
EO = Essential Oil VO = Vegetable Oil or Oily Macerate
For a 100 ml spray bottle:
100 ml of Verbena hydrosol
30 drops of Exotic Verbena Essential Oil (Litsea cubeba)
120 drops of Solubol
20 drops of Grapefruit Seed Extract
7 drops of Vitamin E
Method: Pour the hydrosol into the bottle. In a bowl, mix the essential oil and Solubol. Pour into the bottle. Add the Grapefruit Seed Extract and Vitamin E. Shake the bottle vigorously to mix evenly.
Use: Shake the bottle before each use, then apply to the body. Store in a cool place to enhance the product's refreshing effect.
2 tablespoons of Shea Butter
1 tablespoon of Argan Oil
1 tablespoon Avocado Oil
3 teaspoons of Rose Hydrosol
1 teaspoon of Vegetable Glycerin
1 teaspoon honey and royal jelly mixture (10% fresh royal jelly and 90% honey)
10 drops of Geranium Essential Oil
6 drops of Grapefruit Seed Extract
2 drops of natural Vitamin E
Use: Mix the vegetable oils and butter until you obtain a smooth mixture. Gradually add the hydrosol while emulsifying. Add the vegetable glycerin, then the rest of the ingredients.
25 ml (5 teaspoons) of red clay
10 ml (2 teaspoons) of Vegetable Glycerin
15 ml (3 teaspoons) of Lavender hydrosol
5 drops of Tea Tree Essential Oil
5 drops of Lemon Essential Oil
5 drops of Grapefruit Seed Extract
Method: Mix all the ingredients with a wooden or plastic spoon (do not use metal as this will alter the properties of the clay).
Use: Apply once or twice a week, leave on for 15 to 20 minutes, then rinse with warm water.
20 ml of Jojoba Oil
4 g of beeswax
10 ml of Witch Hazel Hydrosol
3 drops of Rosemary Verbenone essential oil
3 drops of Tea Tree Essential Oil
3 drops of Grapefruit Seed Extract
Method: Melt the wax in the vegetable oil in a double boiler. When the wax has melted, remove from the heat and gradually add the hydrosol in small amounts, whisking until the mixture cools. Add the remaining ingredients while continuing to whisk. Leave to set for 30 minutes in the refrigerator.
Supplier documentation
Frequently Asked Questions
Essential Oils
1 ml = approximately 35 drops (with our Aroma-Zone dropper caps)
Carrier Oils
1 pump (Aroma-Zone aluminium pump) = approx. 0.15 ml
Mass / Volume conversion (for a liquid)
Mass (g) = Density x Volume (ml) at 20°C
Further information
1 full teaspoon = between 3 and 4.5 ml
1 full tablespoon = between 7.5 and 10 ml
However, these spoon ratios depend on a number of factors (e.g. viscosity of the liquid, temperature, depth and size of the spoon, rheological behaviour of the liquid), and we strongly advise you to use precise measuring equipment, such as graduated test tubes, graduated pipettes, and precision scales.
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AI-generated review summary
To preserve my soap paste, the best
Commonly used in my cosmetic preparations
I am always given products close to their expiration date. This is absolutely not okay. Products that expire in less than 6 months. On some occasions, I even received expired products. You need to do better.
Only great products
Very good smell
Associated product
£9.00
30 ml
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