Grapefruit Oil
Citrus Oil
A citrus-scented oil for skin and hair products.
TECHNICAL DATA
No. CAS 8016-20-4
FUNCTION
Soothing oilSofteningPurifyingExfoliant
APPLICATIONS
Body oilsSoapsHair care products
Key properties of grapefruit include soothing, softening, purifying and exfoliating effects, plus body-contouring benefits that improve the look of cellulite. It is recommended in body-contouring gels and skin care creams.
DESCRIPTION
A cosmetic-grade oil extract of the fruit known as grapefruit, with added preservatives for easier handling and storage. Its main components are carbohydrates, organic acids (ascorbic, citric and malic acid), flavonoids, terpenoids and carotenoids.
Practical formulation guide
Usage level: • 1–3 % in hair products. • 3–5 % in body products. • 5–10 % in facial products. HIGHER CONCENTRATIONS SHOW NO NEGATIVE EFFECTS.
How to use and incorporate: Add at the end of the process, with the base below 40 °C/104 °F, so volatile notes are not lost. In water-based products (toners, gels, shampoo, body mist) first premix with a solubilizer —polysorbate 20, Oleth-20 or PEG-40 hydrogenated castor oil— at a 1:3 to 1:5 ratio and then add to the water.
Formulation tips:
- Citrus oil: may be photosensitizing if obtained by expression; in leave-on products for sun-exposed areas, limit its concentration. Oxidizes quickly: keep tightly closed and refrigerated.
- Declare on the label the fragrance allergens naturally present in the essential oil when required by the regulations of the destination market.
- For aromatic blends, combine top notes (citrus), middle notes (floral, herbal) and base notes (woods, resins) and let the blend mature for 24–48 hours.
- Before scaling up, make a pilot batch and run a stability test (cycles at 4 / 25 / 45 °C/39 / 77 / 113 °F for 4 weeks, checking odor, color, pH, viscosity and separation) in the final packaging.
Compatibility: Soluble in vegetable oils, esters and alcohol; insoluble in water. May change the viscosity of gels and shampoos and attack some plastics (polystyrene): prefer amber glass, PET or lined aluminum.
Storage: Store at 15–25 °C/59–77 °F in tightly closed containers. Whenever possible, do not store grapefruit oil for more than a year before using it in your preparations.
Precautions: Handling: Add as the last ingredient of the preparation at temperatures below 50 °C/122 °F; dissolving it before use is recommended. Once the container is opened, handle the product with care to avoid secondary microbial contamination. None in particular for the user.
Technical information for formulators: This sheet describes industrial uses of the raw material in the development of cosmetic products. It is not an efficacy claim for any finished product. The person responsible for the formulation must validate the concentration, compatibility and claims of their product in accordance with applicable regulations.
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