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C16-26 HYDROXYALKANOYL SPHINGADIENES.

Essential / SKIN CONDITIONING

A high-precision, skin-identical lipid that mirrors the structural complexity of rare natural ceramides found in the human stratum corneum. It utilizes a unique dual-bond sphingadiene base to provide superior flexibility and integration into the skin's protective barrier compared to traditional ceramides.

Skin-identical lipid Barrier architect Keratinocyte signaling modulator Emollient

Science

Acts as a structural mortar that organizes lipids, cholesterol, and fatty acids into a dense, protective lamellar phase. Beyond its architectural role, it functions as a bioactive signaling molecule that promotes keratinocyte differentiation and stimulates the skin's endogenous synthesis of its own ceramides.


Research

High confidence
Effective range 0.05–0.2%
Optimal

0.15%

Key findings

  1. 01 Clinical trials by Kao Corporation (2020/2022) indicate that concentrations as low as 0.1% significantly accelerate barrier recovery and reduce transepidermal water loss (TEWL) in compromised skin.
  2. 02 In-vitro research published in Molecular Biology of the Cell shows that 0.05% concentration triggers keratinocyte maturation and strengthens cellular resilience.

Transparency

Commonly dusted
Min. effective
0.05%
Red flag below
0.01%

Because this is a specialized, high-cost ceramide analog, it is often included in 'ceramide complexes' at negligible levels (below 0.01%) for label claims. For precision efficacy in barrier repair, a minimum of 0.05% is required to trigger biological signaling.


The Formula

Solubility
Oil
Optimal pH 5 – 7.5
0 7 14

Stability

A highly stable lipid that maintains integrity within physiological pH ranges. It is best formulated within a lipid-balanced emulsion to ensure proper micellar integration.

Synergies

  • Ceramide NP
  • Ceramide AP
  • Ceramide EOP
  • Cholesterol
  • Fatty Acids

Conflicts

  • Low pH environments (<3.0)
  • Highly ionic surfactant systems

Safety

CIR Status
Safe as used
Max tested
1%
Pregnancy
Safe
Sensitization risk Low

Classified as a non-sensitizing, skin-identical ingredient that is safe for long-term topical application and during pregnancy.


Your Skin

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

Our Assessment

Essential

An elite, next-generation ceramide that provides the necessary structural and signaling cues required to restore barrier function in aged or atopic skin.


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References