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CALYCANTHUS PRAECOX LEAF EXTRACT.

Valuable CAS - / SKIN CONDITIONING

A sophisticated botanical derivative also known as Wintersweet, this extract offers a multi-dimensional approach to skin health by combining powerful defensive antioxidants with targeted structural support. It is particularly valued in precision skincare for its ability to shield the dermal matrix from environmental stressors while simultaneously calming inflammatory pathways.

Antioxidant MMP Inhibitor Anti-inflammatory Skin Conditioning Brightening

Science

This botanical agent operates through four primary pathways: it inhibits the MMP-1 enzyme to prevent collagen breakdown, neutralizes reactive oxygen species (ROS) via high phenolic content, suppresses pro-inflammatory cytokines like TNF-alpha, and regulates tyrosinase activity to manage pigment distribution.


Research

High confidence
Effective range 1–8%
Optimal

5%

Key findings

  1. 01 In vitro testing at 5.0% demonstrated a 45% inhibition of MMP-1, effectively mitigating photoaging-induced collagen loss.
  2. 02 Studies at 1.0% concentration confirmed significant radical scavenging activity and reduction of lipoxygenase, highlighting its use as a soothing agent.
  3. 03 Concentrations between 2.0% and 8.0% have shown efficacy in inhibiting melanogenesis and providing antibacterial support against S. aureus.

Transparency

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

Because it is a botanically derived patent-linked ingredient, it is often included at negligible levels (below 0.1%) for marketing claims. A minimum of 1.0% is required for antioxidant benefits, while 5.0% is necessary for significant anti-aging collagen protection.


The Formula

Solubility
Water
Optimal pH 4 – 6.5
0 7 14

Stability

Heat-sensitive polyphenol content requires addition during the cool-down phase below 40°C. Formulations exceeding pH 7.5 may experience stability issues or discoloration.

Synergies

  • Vitamin C
  • Broad-spectrum Sunscreens
  • Niacinamide

Conflicts

  • Strong oxidizers
  • Heavy metal ions
  • High pH environments

Safety

CIR Status
Not reviewed
Max tested
8%
Pregnancy
Safe
Sensitization risk Low

While it contains the alkaloid calycanthine (toxic if ingested), it is established as safe for topical cosmetic application within the 0.01% to 5.0% range.


Your Skin

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

Our Assessment

Valuable

A potent, multi-functional botanical that excels at preserving skin structural integrity and neutralizing oxidative stress when formulated at active concentrations.


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