Grapefruit Seed Extract (GSE), Professional Strength

Grapefruit Seed Extract (GSE), Professional Strength

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Our Professional Strength Grapefruit Seed Extract (GSE) is a powerful broad spectrum citrus based anti-microbial that can be used to extend product shelf life and protect personal skin care formulations against bacteria and fungus. Professional Strength GSE possesses strong antiseptic, germicidal, antibacterial, fungicidal and anti-viral properties and also acts as an anti-oxidant.

Abich Labratories performed independent challenge testing on our Professional Strength Grapefruit Seed Extract. Refer to the Documents section of this page to find a link to the Challenge Test Results.

Professional Strength Grapefruit Seed Extract is formulated from both the seeds and the pulp of grapefruits (Citrus grandis). The process of extraction yields an active botanically-derived product consisting of flavonoids, such as naringen, ascorbic acid, tocopherols and citric acid which is then blended with USP vegetable glycerin and additional ascorbic acid. The main active constituents are flavonoids and ascorbic acid. The heavy viscous liquid is yellow/golden brown in color and has a mild citrus aroma.

Professional Strength GSE Properties:

  • Antimicrobial
  • Antioxidant
  • Germicidal
  • Antiseptic
  • Antibacterial (Protects against Gram-Positive and Gram-Negative bacteria including Escherichia coli, Staphylococcus aureus and Pseudomonas aeruginosa.)
  • Fungicidal (Protects against Aspergillus flavus and Aspergillus niger.)
  • Antiviral
  • Biodegradable
  • Non-corrosive
  • Considered Environmentally Safe
  • Non-Toxic and Non-Irritating (when used at dilutions of up to 0.2%)
  • For additional details, the Specs, Safety Data Sheet and Challenge Test Results available within the Documents section of this page.


  • Active Ingredients (60%):
    • Grapefruit Seed Extract: 42-46%
    • Vitamin C (Ascorbic Acid): 14-18%
  • Inert Ingredients (40%):
    • Glycerine: 37-40%
    • Moisture: 0-3%


Grapefruit Seed Extract is a potent antimicrobial that should be considered for inclusion in personal care products that contain water, milk, hydrosols or other aqueous liquids.

  • Moisturizers
  • Serums
  • Balms
  • Facial Toners
  • Mud Packs
  • Exfoliants
  • Personal Fragrance Products
  • Liquid Soaps
  • Hair Care Products
  • Can Also Be Used to Help Disinfect Laboratory Utensils and Manufacturing Equipment

Recommended Usage as an Antimicrobial in Personal Care Applications:

  • 2,000 ppm (0.2%)

This usage rate is provided as a guideline only. Formulations should be challenge tested by a qualified laboratory to ensure products are adequately protected.

Soluble in the Following Fluids:

  • Water
  • Glycol Alcohol
  • Organic Solvents

Compatible With the Following Ingredients:

  • Nonionic Agents
  • Citric Acid
  • Ascorbic Acid
  • Acetic Acid
  • Sodium Acetate
  • Potassium Hydroxide
  • Borax
  • Sodium Sulfate
  • Sodium Carbonate
  • Isopropanol Alcohol

Not Compatible With the Following Ingredients:

  • Anionic Wetting Agents

Origin: USA
INCI: Citrus Grandis (Grapefruit) Seed Extract
Typical Shelf Life*: Stable

*Typical Shelf Life begins on the date of manufacture and is defined as the typical shelf life of an ingredient when it is stored and handled properly. The Typical Shelf Life is offered as a general guideline. It should not be considered to be an expiration date. Many ingredients are usable beyond the stated date, especially when stored and handled very carefully.

Documents: Safety Data Sheet   Specifications  Challenge Test Results

Wholesale Pricing: [wholesale pricing info]
  1 fl oz, $8.80
  2 fl oz, $14.83
  4 fl oz, $25.51
  8 fl oz, $46.68
  16 fl oz, $86.59
  32 fl oz, $147.68
  10 lbs., $538.08 *
  50 lbs, $2,456.67 * ^

*This item does not qualify for any promotional discounts.

^This item will ship separately.

UPS Surcharge of $0.00 will be added to this item.

Customer Ratings and Reviews

Average Rating: 5 stars  

Rating: 5 stars 5 out of 5

Reviewed By: Jeanette

Posted: Friday, April 21, 2017

Location: Mount Vernon, NY

Comments: The grapefruit seed extract is an excellent product to preserve your lotion and cream mixtures. I also use other preservatives in additions to GSE, but GSE is a must-have to aid in safely assuring that your creations are well preserved and free from any mold/bacteria growth. I would definitely purchase this product again.

Rating: 4 stars 4 out of 5

Reviewed By: Stephanie

Posted: Friday, November 11, 2016

Location: Albany, OR

Comments: Have not had time to see how well it works, but it incorporates well, and it is not a chemical product. It has no smell and is easy to use.

Rating: 5 stars 5 out of 5

Reviewed By: Fariesha

Posted: Sunday, October 25, 2015

Location: Maimi

Comments: I use this product in all of the products I make to sell: lipsticks, BB Cream, powders. This is the best preservative, in addition to being a very healthy addition to my formulas. It's worth every penny.

Rating: 5 stars 5 out of 5

Reviewed By: Mark

Posted: Friday, September 11, 2015

Location: New York, NY

Comments: Love the product. Performing well as recommended. Expedited shipping is GREAT!! Thank you, Mark E. Lukasiewicz

Total Number of Ratings: 24

“Your product quality and prices are absolutely superb.”

“I just wanted to write to say thank you. I have been purchasing products from your Web site for quite a while. Your product quality and prices are absolutely superb.”

Jamie Welton, Newport Beach, CA


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