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Grapefruit Seed Extract (GSE), Professional Strength

Praan Naturals 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
Grapefruit Seed Extract (GSE), Professional Strength

INCI Nomenclature:

Citrus Grandis (Grapefruit) Seed Extract

Shelf Life:




Safety Data Sheet
Challenge Test Results

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