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RHODODENDRON BRACHYCARPUM EXTRACT.

Valuable CAS - / SKIN CONDITIONING

Rhododendron Brachycarpum Extract is a botanical active celebrated for its multifaceted benefits, including potent antioxidant, anti-inflammatory, and anti-irritant properties. It effectively calms stressed skin, reduces visible redness, and enhances skin hydration, making it a comprehensive solution for various skin concerns.

Summary

Antioxidant Anti-inflammatory Anti-irritant Soothing Hydrating Anti-aging Skin Protectant

Science

Mechanism of Action

This extract operates through multiple pathways to promote skin health. It robustly inhibits the generation of Nitric Oxide (NO) and Reactive Oxygen Species (ROS), key mediators of inflammation and oxidative stress. Bioactive compounds like Rhododendrin are thought to contribute by downregulating LPS-induced NO production and iNOS protein/mRNA expression. The extract also protects cellular membranes from ROS damage and demonstrates inhibitory effects on tyrosinase and elastase, enzymes implicated in pigmentation and skin degradation. Its anti-inflammatory action extends to inhibiting p38 mitogen-activated protein kinase and nuclear factor-kappa B (NF-κB) activation in keratinocytes, while also reducing parameters associated with atopic dermatitis, such as erythema, skin thickening, immune cell infiltration, and the release of inflammatory cytokines (e.g., IL-12a, IL-1β, IL-4, TSLP), histamine, and immunoglobulins.

Research

Clinical Evidence

High confidence
Effective range 0.5% (in vitro) / 1-10 µg/mL–3% (in vivo) / 100 µg/mL%
Optimal

A 3% concentration in a cream demonstrated significant reduction of SLS-induced erythema in an in vivo clinical study. In vitro, concentrations up to 2% showed a dose-dependent reduction in NO (21.82%) and ROS (26.42%) production.

Key findings

  1. 01 A cream containing 3% Rhododendron Brachycarpum Extract significantly reduced SLS-induced erythema in an in vivo clinical study, indicating strong anti-irritant effects.
  2. 02 In vitro, it inhibited LPS-induced Nitric Oxide (NO) production by 21.82% and Reactive Oxygen Species (ROS) production by 26.42%, showcasing potent anti-inflammatory and antioxidant capabilities.
  3. 03 Increased skin water content by 1-4% within 180 minutes compared to a placebo cream, demonstrating hydrating properties.
  4. 04 Showed a significant protective effect against H2O2 toxicity in keratinocytes, indicating cellular protection against oxidative stress.

Transparency

Dusting Analysis

Not commonly dusted

The available research data does not suggest that Rhododendron Brachycarpum Extract is commonly under-dosed or used merely for label appeal. Its efficacy is observed across various concentrations in both in vitro and in vivo studies.

The Formula

Formulation

Solubility
Both
Optimal pH N/A
0 7 14

Stability

No specific optimal pH range for stability has been identified. The extract is typically obtained using solvents like ethanol and water, and its active components are present in fractions of varying polarity (e.g., n-butanol, ethyl acetate, water), suggesting a versatile chemical profile suitable for diverse formulations.

Safety

Safety Profile

CIR Status
Not reviewed
Max tested
3%%
Sensitization risk Low

In vitro studies indicate that the extract is non-cytotoxic up to 2% and 100 µg/mL (0.01%). A 3% concentration in a cream was successfully used in an in vivo clinical study without any reported adverse effects. INCIDecoder also rates its irritancy as low.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Rhododendron Brachycarpum Extract is a valuable, multi-functional ingredient offering significant antioxidant, anti-inflammatory, and hydrating benefits, supported by robust in vitro and in vivo efficacy data and good skin compatibility.

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