Guar Hydroxypropyltrimonium Chloride

At ORY^®, we believe you should know what’s in your products and why. This page lists the published research behind what we say about guar hydroxypropyltrimonium chloride (cationic guar). Each section starts with our claim, then tells you how well the research supports it, then lists the sources so you can read them yourself.

How to read this page

Supported — backed by peer-reviewed research or official safety reviews.

Supported, with caveats — the research points this way, but mostly from laboratory or animal studies, or at different strengths than ORY^® uses.

Limited evidence — little or no published research yet. We say so openly.

1. General Description and Role

Claim: Guar hydroxypropyltrimonium chloride (cationic guar) is guar gum given a positive charge. In ORY^® products, it conditions hair from shampoo and leaves skin feeling soft after washing.

Verification: Supported. The Cosmetic Ingredient Review (CIR) Expert Panel concluded that galactomannans, including guar hydroxypropyltrimonium chloride, are safe in the present practices of use and concentration.

Citations:

- Johnson, W., Jr., et al. (2015). Safety assessment of galactomannans as used in cosmetics (including guar hydroxypropyltrimonium chloride). International Journal of Toxicology, 34(1 Suppl), 35S–65S. https://doi.org/10.1177/1091581815586798
  - What it shows: CIR safety assessment of galactomannans.

2. Composition and Production

Claim: It is made by reacting guar gum (from guar beans) with a quaternary compound. Grades differ in charge; higher charge gives more conditioning.

Verification: Supported. Its chemistry is documented in the CIR report.

Citations:

- Johnson, W., Jr., et al. (2015). Safety assessment of galactomannans as used in cosmetics (including guar hydroxypropyltrimonium chloride). International Journal of Toxicology, 34(1 Suppl), 35S–65S. https://doi.org/10.1177/1091581815586798
  - What it shows: Describes chemistry.

3. Skin Type Suitability

Claim: Cationic guar suits all skin types in rinse-off products.

Verification: Supported. It is a formulation ingredient that improves cleanser feel.

Citations:

- Johnson, W., Jr., et al. (2015). Safety assessment of galactomannans as used in cosmetics (including guar hydroxypropyltrimonium chloride). International Journal of Toxicology, 34(1 Suppl), 35S–65S. https://doi.org/10.1177/1091581815586798
  - What it shows: Safety data.

4. Hair and Scalp Suitability

Claim: In haircare, cationic guar helps hair detangle and feel soft and smooth after shampooing.

Verification: Supported. In shampoos, cationic polymers and surfactants form a complex (coacervate) that deposits on hair as the product is diluted during rinsing.

Citations:

- Hössel, P., Dieing, R., Nörenberg, R., Pfau, A., & Sander, R. (2000). Conditioning polymers in today’s shampoo formulations – efficacy, mechanism and test methods. International Journal of Cosmetic Science, 22(1), 1–10. https://doi.org/10.1046/j.1467-2494.2000.00003.x
  - What it shows: Review of conditioning polymers.
- Goddard, E. D. (2002). Polymer/surfactant interaction: Interfacial aspects. Journal of Colloid and Interface Science, 256(1), 228–235. https://doi.org/10.1006/jcis.2001.8066
  - What it shows: Polymer–surfactant interaction.
- Robbins, C. R. (2012). Chemical and physical behavior of human hair (5th ed.). Springer (reference book). https://doi.org/10.1007/978-3-642-25611-0
  - What it shows: Reference text.

5. Benefits

Claim: Cationic guar improves wet combing and leaves hair and skin feeling soft.

Verification: Supported. These are cosmetic conditioning and feel effects.

Citations:

- Hössel, P., Dieing, R., Nörenberg, R., Pfau, A., & Sander, R. (2000). Conditioning polymers in today’s shampoo formulations – efficacy, mechanism and test methods. International Journal of Cosmetic Science, 22(1), 1–10. https://doi.org/10.1046/j.1467-2494.2000.00003.x
  - What it shows: Conditioning.
- Gavazzoni Dias, M. F. R. (2015). Hair cosmetics: An overview. International Journal of Trichology, 7(1), 2–15. https://pubmed.ncbi.nlm.nih.gov/25878443/
  - What it shows: Review.

6. Use Across ORY^® Product Lines

Claim: Cationic guar is used in ORY^® Haircare, skin cleansers, cleansing cosmetics, and liquid and syndet soap.

Verification: Supported. It is not used in cold-process soap.

Product line	Typical level	How ORY^® uses it
Skincare	0.1–0.3%	Body washes and facial cleansers.
Haircare	0.1–0.5% shampoo; 0.2–1% conditioner	Shampoos, co-washes, conditioners, and 2-in-1s.
Handmade Soap line	0.2–2%	Liquid soap, syndet bars, and shampoo bars (not cold-process bars).
Cosmetics	0.1–0.5%	Cleansing balms, makeup-removing washes, and mascaras.

Citations:

- Johnson, W., Jr., et al. (2015). Safety assessment of galactomannans as used in cosmetics (including guar hydroxypropyltrimonium chloride). International Journal of Toxicology, 34(1 Suppl), 35S–65S. https://doi.org/10.1177/1091581815586798
  - What it shows: Reported uses.
- U.S. Food and Drug Administration. 21 CFR 701.20 — Definition of “soap” (only true soap, made mainly of alkali salts of fatty acids and sold only as soap, is exempt from cosmetic rules). https://www.ecfr.gov/current/title-21/chapter-I/subchapter-G/part-701/subpart-B/section-701.20
  - What it shows: FDA definition of soap; other bars are cosmetics.

7. Pros

Claim: A plant-derived conditioning polymer with a CIR safety conclusion.

Verification: Supported. Supported by hair science and CIR review.

Citations:

- Johnson, W., Jr., et al. (2015). Safety assessment of galactomannans as used in cosmetics (including guar hydroxypropyltrimonium chloride). International Journal of Toxicology, 34(1 Suppl), 35S–65S. https://doi.org/10.1177/1091581815586798
  - What it shows: Safety conclusion.
- Hössel, P., Dieing, R., Nörenberg, R., Pfau, A., & Sander, R. (2000). Conditioning polymers in today’s shampoo formulations – efficacy, mechanism and test methods. International Journal of Cosmetic Science, 22(1), 1–10. https://doi.org/10.1046/j.1467-2494.2000.00003.x
  - What it shows: Performance.

8. Cons

Claim: Cationic guar can build up and needs careful mixing.

Verification: Supported. We list these limits so you have the full picture:

- Buildup on fine hair with high-charge grades.
- Mixing. Must be dispersed properly to avoid lumps.
- Not for cold-process soap.
- Not with carbomer.

Citations:

- Hössel, P., Dieing, R., Nörenberg, R., Pfau, A., & Sander, R. (2000). Conditioning polymers in today’s shampoo formulations – efficacy, mechanism and test methods. International Journal of Cosmetic Science, 22(1), 1–10. https://doi.org/10.1046/j.1467-2494.2000.00003.x
  - What it shows: Buildup.

9. Safety Notes

Claim: Patch test before use; for external use only.

Verification: Supported. Follow these precautions:

- Patch test any new product on a small area for 24–48 hours before full use.
- Stop use if redness, burning, itching, or rash occurs, and talk to a healthcare provider.
- For external use only. Avoid the eyes unless the product is made for the eye area.
- If you are pregnant, nursing, have a medical condition, or are buying for a child, ask a healthcare provider before use.

Citations:

- Johnson, W., Jr., et al. (2015). Safety assessment of galactomannans as used in cosmetics (including guar hydroxypropyltrimonium chloride). International Journal of Toxicology, 34(1 Suppl), 35S–65S. https://doi.org/10.1177/1091581815586798
  - What it shows: Safety conclusion.

10. Product-line notes

- ORY^® Skincare: For external use only. Not for deep or puncture wounds, animal bites, or serious burns.
- ORY^® Haircare: Designed for the look and feel of hair and scalp comfort. Not intended to treat dandruff or scalp conditions, or to promote hair growth or prevent hair loss.
- ORY^® Handmade Soap line: Cationic guar is used in liquid soap, syndet bars, and shampoo bars, not in cold-process soap. Syndet and shampoo bars are cosmetics under FDA rules.
- ORY^® Cosmetics: Do not share applicators, and replace any product that changes color, smell, or texture.

11. References

Peer-reviewed research

- Gavazzoni Dias, M. F. R. (2015). Hair cosmetics: An overview. International Journal of Trichology, 7(1), 2–15. https://pubmed.ncbi.nlm.nih.gov/25878443/
- Goddard, E. D. (2002). Polymer/surfactant interaction: Interfacial aspects. Journal of Colloid and Interface Science, 256(1), 228–235. https://doi.org/10.1006/jcis.2001.8066
- Hössel, P., Dieing, R., Nörenberg, R., Pfau, A., & Sander, R. (2000). Conditioning polymers in today’s shampoo formulations – efficacy, mechanism and test methods. International Journal of Cosmetic Science, 22(1), 1–10. https://doi.org/10.1046/j.1467-2494.2000.00003.x
- Johnson, W., Jr., et al. (2015). Safety assessment of galactomannans as used in cosmetics (including guar hydroxypropyltrimonium chloride). International Journal of Toxicology, 34(1 Suppl), 35S–65S. https://doi.org/10.1177/1091581815586798
- Robbins, C. R. (2012). Chemical and physical behavior of human hair (5th ed.). Springer (reference book). https://doi.org/10.1007/978-3-642-25611-0

Government and regulatory sources

- U.S. Food and Drug Administration. 21 CFR 701.20 — Definition of “soap” (only true soap, made mainly of alkali salts of fatty acids and sold only as soap, is exempt from cosmetic rules). https://www.ecfr.gov/current/title-21/chapter-I/subchapter-G/part-701/subpart-B/section-701.20

1. General Description and Role

2. Composition and Production

3. Skin Type Suitability

4. Hair and Scalp Suitability

5. Benefits

6. Use Across ORY® Product Lines

7. Pros

8. Cons

9. Safety Notes

10. Product-line notes

11. References

6. Use Across ORY^® Product Lines