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Moumoujus

RHODODENDRON WEYRICHII BRANCH/LEAF EXTRACT.

Valuable / SKIN CONDITIONING

This botanical extract from Rhododendron weyrichii offers multifaceted benefits for skin, demonstrating significant efficacy in calming inflammation and brightening skin tone. It also provides robust antioxidant protection, making it a comprehensive ingredient for various skin concerns.

Summary

Skin conditioning Antioxidant Anti-inflammatory Skin brightening

Science

Mechanism of Action

Rhododendron Weyrichii Branch/Leaf Extract operates through dual mechanisms to improve skin health. Its anti-inflammatory action involves the inhibition of proinflammatory molecules, specifically Interleukin-6 (IL-6) and Tumor Necrosis Factor-alpha (TNF-α), in human keratinocytes exposed to UVB radiation. This protective effect helps mitigate UVB-induced skin inflammation. For skin brightening, the extract actively reduces melanin synthesis and intracellular tyrosinase activity, crucial steps in pigment formation.

Research

Clinical Evidence

Medium confidence
Effective range 100–400%
Optimal

N/A

Key findings

  1. 01 In UVB-irradiated human keratinocytes, concentrations between 100-400 µg/mL demonstrated protective effects by inhibiting proinflammatory molecules (IL-6 and TNF-α), thereby mitigating UVB-induced skin inflammation and enhancing cell viability.
  2. 02 An in vitro study utilizing B16F10 melanoma cells revealed that 200 µg/mL of the extract inhibited α-MSH-induced melanin production by 51.6-52.5% and reduced intracellular tyrosinase activity, indicating a potent skin whitening capability.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Low

Human skin primary irritation tests conducted with Rhododendron weyrichii flower extracts did not provoke adverse reactions. This ingredient has not been specifically reviewed by the Cosmetic Ingredient Review (CIR) or the Scientific Committee on Consumer Safety (SCCS), and the FDA does not pre-approve cosmetic ingredients (except color additives).

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

This versatile botanical extract offers promising benefits for calming inflammation, brightening skin tone, and providing antioxidant protection, making it a valuable addition to many skincare formulations across all skin types.

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