Is Hydroxypropyl Guar safe in cosmetics?
Hydroxypropyl Guar has a safety rating of "GOOD" in our database. EU status: permitted. US status: permitted.
Hydroxypropyl Guar
Also known as: Guar, 2-hydroxypropyl-2-hydroxy-3-trimethylammoniopropyl ether chloride, Jaguar C 16
INCI: HYDROXYPROPYL GUAR
Hydroxypropyl Guar (CAS 71329-50-5) is a cosmetic uv filter / sunscreen functioning as UV Filter. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database.
View industrial chemical safety profile for CAS 71329-50-5 →
Auto-generated CPSR Part A draft with source citations
Function
UV Filter
Safety Rating
GOOD
Regulatory Status
EU EU Status
permitted
US US Status
permitted
US Notes
Regulated under FDCA cosmetic provisions
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Hydroxypropyl Guar.
Calculate MoS for your specific formulation with the MoS Calculator.
Additional Ingredient Properties
8 property records from structured ingredient metadata.
biopolymer
{"cas_number": "39421-75-5", "polymer_class": "seed_gum", "botanical_source": "Cyamopsis tetragonoloba (modified)", "molecular_weight_range_kDa": "300-1500", "monosaccharide_composition": "mannose/galactose/hydroxypropyl", "degree_of_branching": "moderately_branched", "charge_type": "nonionic", "viscosity_1pct_solution_mPas": "2000-4000", "pseudoplastic_behavior": "moderate", "thixotropy": "weak",…
emulsion_hlb
{"hlb_required_as_emulsifier": "no", "emulsifier_type": "o_w", "emulsion_stabilization_mechanism": "steric_stabilization", "co_emulsifier_pairs": "none_required", "optimal_oil_phase_pct": "3-15", "optimal_water_phase_pct": "85-97", "electrolyte_tolerance": "high", "pH_emulsion_stability_range": "3.0-10.0", "viscosity_building_contribution": "high", "droplet_size_range_um": "0.3-12", "zeta_potentia…
hair_conditioning
{"cas_number": "39421-75-5", "ingredient_class": "cationic_conditioner", "chemical_type": "cationic_guar", "charge_density_meq_g": "0", "substantivity_to_hair": "good", "deposition_from_shampoo": "no", "deposition_from_conditioner": "moderate", "conditioning_mechanism": "film_forming", "hair_penetration": "surface_only", "molecular_weight_effect_on_penetration": "high_MW_nonionic", "wet_combing_fo…
pediatric_safety
{"safe_for_newborn_0_6m": "yes", "safe_for_infant_6_12m": "yes", "safe_for_toddler_1_3y": "yes", "safe_for_child_3_12y": "yes", "safe_for_teen_12_18y": "yes", "pediatric_max_concentration_pct": "2.0", "adult_max_concentration_pct": "2.0", "pediatric_dermal_absorption_factor": "minimal", "diaper_area_safe": "yes", "pediatric_allergy_prevalence": "low", "banned_in_children_products_eu": "no", "banne…
ph_stability
{"optimal_ph_min": "4.0", "optimal_ph_max": "10.0", "stable_ph_min": "3.5", "stable_ph_max": "11.0", "ph_dependent_function": "Modified guar; better pH tolerance", "formulation_note": "Non-ionic modified gum", "source": "Formulation literature"}
polymer
{"cas_number": "39421-75-5", "ingredient_class": "thickener", "polymer_type": "modified_natural", "chemical_backbone": "guar", "molecular_weight_Da_range": "500000-3000000", "ionic_character": "nonionic", "viscosity_1pct_aqueous_mPas": "2000-5000", "pH_viscosity_sensitivity": "moderate", "salt_tolerance": "moderate", "electrolyte_effect_on_viscosity": "moderate", "temperature_viscosity_sensitivity…
rheology
{"cas_number": "39421-75-5", "rheology_modifier_type": "Natural Polysaccharide - HP Guar Modified", "thickening_mechanism": "Chain entanglement and hydrogen bonding", "viscosity_increase_factor": "5000-25000x", "brookfield_viscosity_typical_cps": "6000-18000", "shear_thinning_behavior": "Excellent", "thixotropic": "Yes", "yield_stress_pa": "15-40", "flow_curve_type": "Highly pseudoplastic with yie…
sensory
{"silky": "gel-like", "smooth, glides easily": "smooth, conditioning", "dry-touch, non-greasy": "soft, conditioned", "instant": "moderate", "low": "high", "w/o": "o/w", "very-high": "moderate", "no": "no", "yes": "yes", "1.40": "1.50", "transparent": "translucent", "colorless": "off-white", "excellent": "fair", "light": "light", "synthetic": "botanical"}
Function Categories & List Membership
Cosmetic/Chemical Function Categories
Anti-static agent
Softener and conditioner
Regulatory List Membership (1)
EU Restricted for Children (Cosmetics)
Expert Verdict
Expert safety assessment and concern-level summary for Hydroxypropyl Guar.
Regulatory Flags
eu_children_restricted
Known Synonyms
Guar, 2-hydroxypropyl-2-hydroxy-3-trimethylammoniopropyl ether chloride
Jaguar C 16
Chemical Function
Anti-static agent
Softener and conditioner
Regulatory Lists
Canada; Personal care; Substances in PCP - Canada (4/2014)
children; Europe; Personal care
Australian Status
AICIS status: listed_with_terms
Specific information requirements: Obligations to provide information apply. These obligations are: 1. If the assessment report about the chemical recommends secondary notification of the chemical in particular circumstances and any of the circumstances occur in relation to the introduction (importation or manufacture) of the chemical by a person, then the...
Frequently Asked Questions
Is Hydroxypropyl Guar allowed in the EU?
Hydroxypropyl Guar EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Hydroxypropyl Guar do in cosmetics?
Hydroxypropyl Guar functions as: UV Filter. It is classified as a UV Filter / Sunscreen in our database. CAS number: 71329-50-5.
Compliance Tools
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Ingredient Decoder
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Substance Compliance
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MoS Calculator
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Heavy Metal Limits
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Antioxidant
(AGARICUS BLAZEI FERMENT + GANODERMA LUCIDUM FERMENT + GANODERMA MULTIPILEUM FERMENT) EXTRACT
Good
Similar safety
Anti-sebum, Antioxidant, Skin Protecting
(ANGELICA ACUTILOBA/PAEONIA LACTIFLORA/REHMANNIA GLUTINOSA) ROOT/CNIDIUM OFFICINALE RHIZOME EXTRACT
Good
Similar safety
Skin Conditioning, Skin Conditioning ...
(ANGELICA ACUTILOBA/PAEONIA LACTIFLORA/REHMANNIA GLUTINOSA/SCUTELLARIA BAICALENSIS) ROOT/(CNIDIUM OFFICINALE/COPTIS CHINENSIS) RHIZOME/GARDENIA JASMINOIDES FRUIT/PHELLODENDRON CHINENSE BARK EXTRACT
Good
Similar safety
(ANGELICA GIGAS/GLYCYRRHIZA URALENSIS/REHMANNIA GLUTINOSA ROOT)/ANGELICA GIGAS STEM/CARTHAMUS TINCTORIUS FLOWER/(CARTHAMUS TINCTORIUS/PRUNUS PERSICA SEED)PORIA COCOS WATER
Good
Similar safety
Humectant, Skin Conditioning, Skin Pr...
(ANGELICA KEISKEI/CHRYSANTHEMUM ZAWADSKII) LEAF/STEM/CINNAMOMUM CASSIA BARK/TRICHOSANTES KIRILOWII FRUIT/ULMUS DAVIDIANA BARK/ROOT/(PAEONIA JAPONICA/BUPLEURUM FALCATUM/POLYGALA TENUIFOLIA ROOT)/VISCUS ALBUM STEM EXTRACT
Good
Similar safety
Anti-seborrheic, Anti-sebum, Antioxid...
(APPLE/CITRUS JUNOS/LENTIL/PEAR/PUMPKIN/STRAWBERRY/TOMATO FRUIT)/CORN KERNEL/(ARCTIUM LAPPA/BRASSICA OLERACEA ACEPHALA/CABBAGE/CAMELLIA SINENSIS/MORINGA OLEIFERA/RADISH/SPINACH LEAF)/(SORGHUM BICOLOR LEAF/STEM)/OAT MEAL/POTATO PULP/(CARROT/NELUMBO NUCIFERA/RADISH/WILD YAM ROOT)/(AMARANTHUS HYPOCHONDRIACUS/CASHEW/CICER ARIETINUM/COIX LACRYMA-JOBI MA-YUEN /MACADAMIA TERNIFOLIA/PHASEOLUS ANGULARIS/PISTACIA VERA/RHYNCHOSIA NULUBILIS/RICE/SESAME/SETARIA ITALICA/SOYBEAN/SWEET ALMOND/WHEAT SEED)/HORDEUM VULGARE SPROUT/CYPERUS ESCULENTUS TUBER/ARTEMISIA PRINCEPS/BROCCOLI/CHENOPODIUM QUINOA/ENTEROMORPHA COMPRESSA/HORDEUM VULGARE/IPOMOEA BATATAS/LAMINARIA JAPONICA/LENTINUS EDODES/PLEUROTUS OSTREATUS/PORPHYRA TENERA/UNDARIA PINNATIFIDA EXTRACT
Good
Similar safety
Antioxidant
Hydroxypropyl Guar Hydroxypropyltrimonium Chloride
Excellent
Chemical family
Antistatic, Hair Conditioning, Film F...
HYDRASTIS CANADENSIS EXTRACT
Good
Browse nearby
Fragrance, Skin Conditioning
HYDRATROPIC ALDEHYDE
Good
Browse nearby
Perfuming
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