Ceramide NP NS AP

skin-concerns-lv5

Exfoliation / PoresBarrierMoisturizing

INCI: Ceramide NP/NS/AP

Effect

Barrier function repair, TEWL reduction

Mechanism

Major component of the stratum corneum lamellar structure. LPP formation. Ideal ratio with cholesterol and fatty acids is 3:1:1

Typical concentration

0.1-0.5%

Onset

TEWL improvement: 1-2 weeks. Barrier repair: 2-4 weeks

Cautions

Subclass ratio is important

Evidence & references

Bouwstra et al. (2003) [PubMed]

Journal

Related Journal

Skin-Concern SolutionsFor Those Whose Skin Stays Dry No Matter What They Apply -- What You're Missing Isn't Moisture Skin-Concern SolutionsWhy Your Skin Gets Dry Even in Summer -- The Science Behind Why Sweating Doesn't Mean Hydration Skin-Concern SolutionsFor Those Who Feel Cream Alone Isn't Enough -- What Needs to Happen Before You "Seal"Skin-Concern SolutionsFor Those with Sensitive Skin Who Can't Use Anything -- Understanding What "Irritation" Really Means Skin-Concern SolutionsThe Real Cause of Recurring Breakouts -- Why "Keeping Clean" Isn't Enough Skin-Concern SolutionsFor Those Who Can't Feel Their Aging Skin Recovering -- The "Foundation" Your Skin Needs What “Suits Your Skin” MeansTEWL, moisture, sebum—understanding your skin by the numbers What “Suits Your Skin” MeansMicrobiome and skin compatibility—the real reason it "doesn’t suit you"Care Guides by ConcernThe truth about skin concerns — why dark spots, wrinkles, pores, and dryness occur Care Guides by ConcernThe science of sensitive skin — barrier disruption and microbiome restoration

This page is reference information and does not guarantee efficacy. Figures vary by test conditions (in vitro / manufacturer / concentration). It does not indicate pharmaceutical efficacy.

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