Precautions for 5-Type Ceramide Products: Why Careful Checking Matters

Ceramide is one of the lipid components that make up the stratum corneum of the skin, acting as the 'cement between bricks' that forms the skin barrier. As more products combine 5 types of ceramide—NP, NS, AS, AP, and EOP—the label '5-type ceramide' has come to function as a kind of trust signal. In reality, however, there are other points that deserve more attention than simply the number of types.

5-Type Ceramide: Why It Deserves Careful Attention

Ceramide is important on its own, but the skin's lipid barrier is not made up of ceramide alone. It is known that ceramide forms a structure similar to natural skin lipids when it exists together with cholesterol and fatty acids in a specific ratio. In other words, even if a product contains 5 types of ceramide, if the cholesterol-fatty acid combination is missing or the ratio is off, the barrier care effect may not be as noticeable as expected.

Also, ceramide content is often labeled in varying 'ppm' units, but it's difficult to gauge the actual perceived moisturizing power or barrier care ability just from the order of ingredients listed or the numbers alone. How stably the ceramide is emulsified within the formulation and whether it is in a particle form that absorbs well into the skin are also factors that affect the outcome.

Sensitized skin, especially right after a procedure or when the stratum corneum has become thin, may actually feel irritated by high concentrations of active ingredients, which is something to watch out for. Ceramides themselves are known to have a relatively low potential to cause irritation, but how it feels can vary depending on the combination with fragrances, alcohols, and other active ingredients included in the product, so it's necessary to develop a habit of checking the full ingredient list together.

What happens when the skin barrier becomes weakened

In the early stage of barrier damage, tightness, redness, and slight stinging often appear first. This period is usually between 1 to 3 days after the damage, a phase in which the skin reacts particularly sensitively to external stimuli.

Afterward, around day 4 to about a week later, acute irritation subsides but it often transitions into a 'recovery phase' where inner tightness and fine flaking appear. During this period, irritation has decreased but water retention capacity has not yet fully returned, so consistent deep moisturizing care becomes more important than lightweight formulas.

Around 2 weeks, it has been reported that skin texture and barrier indicators tend to gradually return to levels close to before the irritation, but the speed and degree of this recovery can vary greatly between individuals depending on the composition of the products used and whether consistent care is maintained.

How should home care be done at each stage

In the early sensitive period of the barrier (1-3 days), it's good to apply thin, layered formulas focused on low irritation and soothing. Patting to absorb rather than rubbing helps reduce friction-related irritation.

Once moving into the recovery phase (after day 4), switching to a formula with higher moisturizing power to care for inner tightness and flaking can help with how the skin feels. During this period, using a product that combines ceramides with moisturizing and texture-smoothing ingredients like panthenol and niacinamide can also help refine skin texture.

Common to both periods, avoiding UV exposure and excessive exfoliation, and continuing with a moisturizing step as quickly as possible after cleansing, are considered the basics of barrier care.

Post-procedure recovery is determined by home care

For this reason, ZXQMAGAZINETERM Aviju Cream ZXQ was designed with 5 types of ceramides together with cholesterol and fatty acids in a ratio similar to skin lipids, divided into 2 products. The Ultra Cera-Rich Cream is designed for use during the early period when irritation is concentrated (1-3 days right after a procedure, or when the barrier becomes suddenly sensitized), while the Hydro Re-Boosting Cream is designed for use during the recovery phase (after day 4) when inner tightness and flaking are a concern, enabling home care suited to the skin condition that changes depending on the stage.