can absorb body odor well There are natural sources Can be used in a variety of formulations such as bar soap, liquid soap, shampoo, cream, roll-on or deodorant spray.

Zinc Ricinoleate (30% Solution)

can absorb body odor well There are natural sources Can be used in a variety of formulations such as bar soap, liquid soap, shampoo, cream, roll-on or deodorant spray.

Zinc Ricinoleate in liquid form is dispersible in water.

good stability In a formula with a pH range of 7.5-11

If you want the formula to be clear:

1-4% Zinc Ricinoleate (30% Solution)

3-7% Ultra Solve

5=20% Propylene Glycol or Butylene Glycol or Ethyl Alcohol

0.1% Disodium EDTA (in case of formula pH is lower than 8) or Tetrasodium EDTA (in case of pH over 8)

What Is Zinc Ricinoleate?

Zinc ricinoleate is a zinc salt of ricinoleic acid, which is derived from castor oil. Ricinoleic acid is the primary fatty acid found in castor oil (extracted from the seeds of Ricinus communis). When neutralized with zinc, it forms zinc ricinoleate—a waxy solid commonly used as a deodorizing ingredient in personal care products.

Role in Cosmetics

1. Deodorizing Agent

   • Zinc ricinoleate is widely used in deodorants and foot-care products because it helps reduce body odor.

   • It works by capturing and chemically binding (chelating) odor-causing molecules—particularly volatile sulfur compounds—rather than simply masking them with a fragrance.

2. Stabilizer and Emulsifier

   • Although primarily a deodorizing agent, zinc ricinoleate can also help stabilize emulsion systems in some formulations.

   • It is sometimes combined with surfactants or co-emulsifiers to enhance product stability and performance.

3. Use Levels and Formulations

   • Typical use concentrations in cosmetics range from 0.5% to 3% (though this can vary depending on the product type).

   • It is often included in an emulsion or solution form to enhance dispersion and efficacy.

Safety and Regulatory Status

1. Low Irritation Potential

   • At typical use levels, zinc ricinoleate is generally recognized as safe and non-irritating to the skin.

   • However, as with any cosmetic ingredient, formulating within recommended concentrations and conducting final product safety tests are good practices.

2. Regulatory Acceptance

   • Zinc ricinoleate is allowed for use in cosmetics in most major markets (e.g., EU, US) without specific restrictions.

   • It is not classified as a hazardous substance under normal usage conditions in cosmetics.

3. Allergenicity and Sensitization

   • There is no widely reported evidence of zinc ricinoleate being a common skin sensitizer or allergen. Nonetheless, people with extremely sensitive or compromised skin should test new products carefully.

Selected Research Citations

1. Ferrer, M., Comelles, F., & Cunill, F. (1992). Zinc Ricinoleate as an Odour Absorber. A Synergy with Surfactants? Journal of Surfactants and Detergents, 1(4), 491–496.

   • Explores the mechanism by which zinc ricinoleate binds odoriferous substances and how surfactants can improve its deodorizing efficacy.

2. CIR Expert Panel. (2007). Final Report on the Safety Assessment of Ricinoleic Acid, Castor Oil, Hydrogenated Castor Oil, and Related Ingredients. International Journal of Toxicology, 26(Suppl. 3), 31–77.

   • Although it focuses primarily on castor oil derivatives, it covers ricinoleic acid’s safety profile and provides background on related ingredients such as zinc ricinoleate.

3. Zanetti, S., et al. (2006). Comparative evaluation of different deodorant formulations containing Zinc Ricinoleate. International Journal of Cosmetic Science, 28(2), 123–129.

   • Comparative study looking at different product types (sprays, creams, roll-ons) containing zinc ricinoleate and measuring odor neutralization efficacy.

4. Appell, M., & Jackson, M. (2009). Zinc Salts as Deodorizers in Personal Care Products. Cosmetics & Toiletries, 124(5), 45–52.

   • Reviews the chemistry and odor-neutralizing mechanism of various zinc salts, with emphasis on zinc ricinoleate’s efficacy.

5. Patel, M., et al. (2015). Synergistic Effects in Deodorant Formulations Using Zinc Ricinoleate and Natural Botanicals. SOFW Journal, 141(10), 40–48.

   • Evaluates the synergistic effects of using zinc ricinoleate with plant extracts to enhance deodorizing properties.

Use: mixed in cosmetics deodorant

Mixing method: Please check the instructions above.

Usage rate: 1-4%

Product characteristics: yellow liquid

Solubility: can disperse in water

Storage: Close the lid tightly, avoid air, light and moisture. Shelf life at least 2 years.

INCI Name : Propylene Glycol, Zinc Ricinoleate, Aqua, Arginine, Citric Acid