How we scored it
How it’s made
Where it comes from
Fermentation-derived phytosphingosine acylated with vegetable stearic acid. Evonik and other suppliers use this biotechnology route.
Ceramide NP (N-stearoyl phytosphingosine) is made from two natural-origin parts. The phytosphingosine backbone is produced by fermentation: the yeast Wickerhamomyces ciferrii (formerly Pichia ciferrii) secretes tetraacetyl phytosphingosine, which is then deacetylated. Stearic acid comes from hydrogenated vegetable oils or animal fats.
The two are joined by an amide bond. The stearic acid is activated, for example as stearoyl chloride, and reacts with the amino group of phytosphingosine under controlled temperature and pH so that the hydroxyl groups are left untouched. The activating reagent leaves no atoms in the product, so every atom of Ceramide NP comes from the fermentation backbone or the fatty acid.
Purification of the final Ceramide NP product is crucial for cosmetic applications. This usually involves crystallization, chromatography, and filtration techniques to remove unreacted starting materials, byproducts, and residual solvents. The purity and physical form (e.g., powder, flakes) are critical for its incorporation into cosmetic formulations.
In plain English
Ceramide NP is a type of lipid, specifically a ceramide, that is a crucial component of the skin's natural barrier. Think of it like the mortar between the bricks (skin cells) in your skin's outer layer, helping to keep moisture in and irritants out. It plays a vital role in maintaining skin hydration, smoothness, and overall health.
In cosmetic products, Ceramide NP is added to help replenish the skin's natural ceramide levels, which can deplete over time due to aging or environmental factors. By incorporating this ingredient, formulations aim to strengthen the skin barrier, reduce dryness and flakiness, and improve the skin's resilience. It's particularly beneficial for dry, sensitive, or mature skin types seeking to restore a healthy and comfortable complexion.
CosIng definition: Ceramide NP is the N-acylated sphingolipid consisting of Phytosphingosine having the D-erythro structure linked to normal saturated or unsaturated fatty acid.
Structure
(Z)-N-[(2S,3S,4R)-1,3,4-trihydroxyoctadecan-2-yl]octadec-9-enamide
References
- 1ISO 16128-1:2016 and ISO 16128-2:2017 — Guidelines on technical definitions and criteria for natural and organic cosmetic ingredients and products. ISO, Geneva.
- 2Ceramide NP. PubChem CID 57378373. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
- 3CERAMIDE NP. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 4CERAMIDE NP. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CERAMIDE%20NP