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CITRUS HYSTRIX LEAF OIL.

Valuable CAS 91771-50-5 / PERFUMING

Commonly known as Kaffir Lime, this potent botanical oil is prized for its high concentration of aromatic compounds that provide intense antioxidant protection and microbial defense. It serves as a multifunctional conditioning agent that balances sebum production while revitalizing the skin's natural barrier.

antimicrobial antioxidant astringent skin conditioning perfuming

Science

This oil functions through a multi-pathway approach: it neutralizes oxidative stress to prevent cellular damage, suppresses 5-lipoxygenase to mitigate inflammatory responses, and acts as a natural astringent to refine pore structure. Its high citric acid content facilitates gentle brightening, while its antimicrobial profile effectively inhibits the growth of pathogens like P. acnes and S. aureus.


Research

Medium confidence
Effective range 3.75–10%
Optimal

5%

Key findings

  1. 01 Application of a 10% concentration demonstrated significant reduction in UVB-induced epidermal damage and enhanced tissue regeneration.
  2. 02 Exhibited strong antibacterial efficacy against S. aureus and E. coli with a Minimum Inhibitory Concentration (MIC) of 6.25 μL/mL.

Transparency

Commonly dusted
Min. effective
1%
Red flag below
0.1%

Due to its high potency and potential for irritation at high concentrations, many mass-market formulations include it at 'label-claim' levels (below 0.1%) rather than at the 3-10% concentrations explored in therapeutic research.


The Formula

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Highly stable when formulated in nanoemulsions, maintaining integrity against temperature fluctuations and mechanical centrifugation.

Synergies

  • Carrier oils
  • Vitamin E
  • Glycerin

Safety

CIR Status
Safe with restrictions
Sensitization risk High

Must be properly diluted to avoid skin burning or sensitization. CIR guidelines mandate formulation to be non-irritating, as pure essential oils are highly concentrated.


Your Skin

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

Our Assessment

Valuable

A powerful bioactive oil excellent for clarifying and protecting oily to normal skin types, provided it is used in professional dilutions.


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