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AVERRHOA CARAMBOLA LEAF EXTRACT.

Valuable CAS 97675-54-2 / HUMECTANT, SKIN CONDITIONING

Derived from the nutrient-dense leaves of the Star Fruit tree, this botanical powerhouse offers a sophisticated approach to anti-aging and skin resilience. It blends high-potency antioxidants with structural support mechanisms to defend the skin against environmental stressors while promoting a firmer, more youthful appearance.

Antioxidant Skin conditioning Humectant Anti-inflammatory

Science

This extract functions through a dual-action pathway: it utilizes a rich profile of flavonoids like apigenin and quercetin to neutralize oxidative stress and inhibit pro-inflammatory cytokines such as TNF-α and IL-6. Simultaneously, it stimulates the synthesis of Type I pro-collagen in dermal fibroblasts and acts as a natural humectant to optimize moisture levels within the stratum corneum.


Research

High confidence
Effective range 0.01–1%
Optimal

0.1%

Key findings

  1. 01 In vitro testing demonstrated that a 0.1% concentration significantly elevated the production of pro-collagen I, suggesting a direct impact on skin density.
  2. 02 In vivo research recorded a 73% reduction in inflammatory edema, highlighting its potent soothing capabilities.
  3. 03 Comparative assays identified an IC50 of 80.35 μg/mL for lipid peroxidation inhibition, placing its antioxidant capacity on par with pure quercetin.

Transparency

Commonly dusted
Min. effective
0.05%
Red flag below
0.01%

While this ingredient is effective at low concentrations, many formulas include it at 'trace' levels (below 0.01%) purely for marketing claims. To achieve measurable collagen-boosting and anti-inflammatory results, look for concentrations between 0.1% and 1.0%.


The Formula

Solubility
Both
Optimal pH 4.5 – 6.5
0 7 14

Stability

Highly stable at room temperature in water or polyol-based systems (Glycerin/Butylene Glycol). It is sensitive to thermal degradation and should be added during the cooling phase of production.

Synergies

  • Vitamin C
  • Hyaluronic Acid
  • Peptides

Conflicts

  • Strong oxidizing agents
  • Extreme pH levels (can cause flavonoid-induced color shifts)

Safety

CIR Status
Not reviewed
Max tested
1%
Pregnancy
Safe
Sensitization risk Low

Recognized as safe for use in international cosmetic markets, including the IECIC. It is generally regarded as non-irritating even in sensitive skin applications.


Your Skin

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Valuable

A high-performance botanical that bridges the gap between soothing hydration and structural anti-aging, provided it is used at clinically relevant concentrations.


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