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ASTER SPATHULIFOLIUS EXTRACT.

Valuable CAS - / SKIN CONDITIONING

Commonly known as Haeguk or Korean Starwort, this resilient coastal botanical provides a multi-functional approach to skin health. It is highly valued for its dual ability to inhibit hyperpigmentation while significantly reinforcing the skin's moisture barrier through specialized phenolic compounds.

Skin conditioning Soothing Antioxidant Brightening Humectant

Science

This extract suppresses melanogenesis by modulating the MAPK/ERK and AKT/GSK3β signaling pathways, which triggers the ubiquitin-dependent degradation of MITF (Microphthalmia-associated Transcription Factor). Simultaneously, it offers anti-inflammatory benefits by inhibiting nitric oxide production and maintains cellular redox balance by restoring SOD2 levels and scavenging free radicals.


Research

Medium confidence
Effective range 0.0001–10%
Optimal

5%

Key findings

  1. 01 Hwang & Choung (2016) demonstrated significant melanin reduction in UVB-irradiated models and B16F10 cells.
  2. 02 Choi et al. (2021) confirmed a 5% concentration significantly increases skin hydration as measured by corneometry.

Transparency

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

Due to its botanical nature and patent claims covering very low concentrations (0.0001%), it is often used at 'label-claim' levels. However, clinical hydration and significant brightening effects typically require concentrations closer to 5%.


The Formula

Solubility
Water
Optimal pH 4 – 7
0 7 14

Stability

Heat stable and maintains efficacy across typical cosmetic pH ranges; standardized extracts are typically titrated to 1% germacrone content. Should be stored in opaque packaging to prevent phenolic oxidation.

Synergies

  • Niacinamide
  • Ascorbic Acid
  • Glycerin

Conflicts

  • Strong oxidizing agents
  • Formulations with pH > 8.0 (may cause color instability)

Safety

CIR Status
Not reviewed
Max tested
5%
Pregnancy
Safe
Sensitization risk Low

Classified as a safe edible ingredient by the South Korean Ministry of Food and Drug Safety. EpiSkin 3D models categorize it as a non-irritant.


Your Skin

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

Our Assessment

Valuable

A versatile and scientifically backed botanical extract that effectively targets both pigment correction and hydration with an excellent safety profile.


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