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The science of
a healthy barrier

Healthy skin starts with a healthy barrier. Explore the skin barrier science behind ZEROID's skincare approach — from the skin barrier itself to our proprietary MLE® and Defensamide™ technologies.

Macro visual of lipid and moisture structure
fig. 01 — skin-barrier sciencemle® / defensamide™ / ceramide-9s

01 / 03The Skin Barrier

The stratum corneum & skin lipids

The outermost layer of skin is built like a brick wall: corneocytes form the bricks, while lipids fill the spaces between them like mortar. It helps hold moisture in and keep skin feeling comfortable.

Skin lipids — ceramides, cholesterol and fatty acids — form an ordered, multi-lamellar structure. The healthier the skin, the denser and more orderly this arrangement becomes. When skin is dry or sensitive, ceramides may be reduced. Ceramides and ingredients that resemble skin lipids help keep skin moisturized and comfortable.

Diagram of skin lipid layers

02 / 03MLE®

Multi-Lamellar Emulsion

Built with Neopharm's proprietary Ceramide-9S, MLE® forms a multi-lamellar structure similar to that found in healthy skin. It helps reduce moisture loss and leaves dry, sensitive skin feeling moisturized and comfortable.

step 01

Dry skin may lose moisture more easily

This is often linked to reduced ceramides in the skin's lipid barrier, which can make skin feel drier and more reactive over time.

step 02

MLE® helps reduce moisture loss

The skin-lipid-like complex in ZEROID helps support the skin's natural barrier, helping it stay hydrated and comfortable throughout the day.

step 03

Moisture balance is supported

With a stronger barrier, skin retains moisture more effectively and feels more comfortable.

MLE lamellar structure under microscope

The Maltese-cross pattern

Under a polarized-light microscope, skin lipids dispersed in water reveal a distinctive cross-shaped pattern known as the “Maltese cross.” ZEROID's MLE® formula displays a Maltese-cross pattern consistent with a lamellar (multi-layered) organization.

03 / 03Defensamide™

Supporting the skin's natural resilience

Healthy skin holds up well against daily stress — but as the barrier weakens, so does that resilience. Defensamide™ helps skin stay comfortable, even when faced with everyday wear and tear.

01

Weakened resilience

Dry skin can feel more vulnerable to daily stress.

02

Support from Defensamide™

Defensamide™ helps support the skin's natural resilience.

03

A supported skin barrier

A well-supported barrier helps skin stay calm and comfortable, no matter what the day brings.

Next / Products

Find the right ZEROID line for your skin

ZEROID's skincare portfolio draws on this skin barrier research, with each line designed for a specific skin concern.