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CITRUS HYSTRIX LEAF EXTRACT.

Valuable CAS 91771-50-5 / SKIN CONDITIONING

Citrus Hystrix Leaf Extract, derived from the Kaffir lime tree, is a multi-functional botanical ingredient recognized for its potent antioxidant, anti-inflammatory, and antimicrobial properties. It actively contributes to skin clarity and tone, while offering soothing benefits.

Antioxidant Anti-inflammatory Antifungal Antibacterial Astringent Skin Brightening Soothing Perfuming

Science

This extract exerts its dermatological benefits through a rich profile of secondary metabolites, including flavonoids, terpenoids, and phenols. These compounds provide robust antioxidant defense by neutralizing hydroxyl radicals and preventing lipid peroxidation. Anti-inflammatory actions are mediated by attenuating NF-κB signaling and NLRP3 inflammasome activity in macrophages, thereby reducing pro-inflammatory cytokine expression. Furthermore, it demonstrates antibacterial efficacy against strains like Staphylococcus Aureus and antifungal activity, particularly against Pityrosporum ovale. The presence of natural astringents helps refine pores and regulate sebum, while citric acid contributes to skin brightening and enhancing overall complexion uniformity.


Research

Medium confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 Antifungal effectiveness against Pityrosporum ovale.
  2. 02 Excellent antioxidant activity.
  3. 03 Anti-inflammatory activity.

Transparency

Not commonly dusted

The Formula

Solubility
Both
Optimal pH N/A
0 7 14

Stability

Solubility is highly dependent on the extraction solvent; water solubility is generally challenging for most extracts, while hexane extracts show particular resistance. Ethyl acetate and hexane leaf extracts exhibited difficulty dissolving in ethanol. Essential oil components typically demonstrate oil solubility.


Safety

CIR Status
Not reviewed
Sensitization risk Unknown

A preliminary report indicated potential for severe photodermatitis (characterized by erythema and blisters) upon topical application. However, the validity of this allergic reaction is unconfirmed due to a lack of documented dosage or duration, necessitating further robust investigation.


Your Skin

Yes Normal
No Dry
Yes Oily
No Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Valuable

Citrus Hystrix Leaf Extract offers significant antioxidant, anti-inflammatory, and antimicrobial benefits, making it a valuable active for formulations targeting skin clarity, tone, and protection, despite an unvalidated photodermatitis concern.


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