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CAMELLIA JAPONICA SEED OIL.

Valuable CAS 223748-13-8 / SKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT

A lightweight, bio-identical lipid traditionally known as Tsubaki oil, characterized by a high concentration of monounsaturated fatty acids. It functions as a high-performance emollient that bridges the gap between traditional botanical oils and modern barrier-repair technology.

Emollient Skin Conditioning Antioxidant Collagen Stimulant Anti-inflammatory

Science

With an oleic acid content ranging from 75% to 90%, it mimics the skin's natural sebum to reinforce the lipid mantle and significantly reduce transepidermal water loss. Beyond surface occlusion, it operates on a cellular level by upregulating filaggrin for barrier integrity, stimulating human type I procollagen synthesis, and inhibiting MMP-1 enzymes to prevent collagen degradation.


Research

High confidence
Effective range 0.1–1%
Optimal

1%

Key findings

  1. 01 Topical application at 1% concentration demonstrated a statistically significant suppression of transepidermal water loss (TEWL) within a 2-hour window.
  2. 02 In vitro analysis at 0.1 mg/mL confirmed induction of type I procollagen and the inhibition of collagenase expression in dermal fibroblasts.
  3. 03 Concentrations between 0.1% and 0.5% showed potent anti-inflammatory activity by inhibiting NF-κB and AP-1 signaling pathways.

Transparency

Not commonly dusted
Min. effective
0.5%
Red flag below
0.1%

While this oil is effective at relatively low concentrations (0.5% for anti-inflammatory benefits), levels below 0.1% are generally insufficient to provide the pro-collagen or barrier-occlusive benefits typical of the ingredient.


The Formula

Solubility
Oil
Optimal pH 5.5 – 6
0 7 14

Stability

Exhibits higher oxidative stability than polyunsaturated oils due to high monounsaturated fat content. Formulations should be stored in UV-protective, airtight packaging.

Synergies

  • Tocopherols
  • Phytosterols
  • Ceramides

Conflicts

  • L-Ascorbic Acid (layering high-oleic oils immediately may hinder penetration of low-pH actives; a 10-minute interval is recommended)

Safety

CIR Status
Safe as used
Max tested
100%
Pregnancy
Safe
Sensitization risk Low

Assessed as non-sensitizing with an EWG Hazard Score of 1. It is exceptionally well-tolerated across all demographics.


Your Skin

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

Our Assessment

Valuable

An exceptionally stable and biocompatible botanical oil that provides dual-action barrier protection and anti-aging signaling.


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