Probiotics: Principle and Effects, How Do They Work on Skin?

Probiotics: Why Are They Also Drawing Attention for Skin?

Probiotics originally refer to live microorganisms that may help manage the balance of gut microbiota. Recently, as it has become known that the skin also has its own unique microbial ecosystem (the skin microbiome), probiotics have also drawn attention as cosmetic ingredients.

A variety of microorganisms inhabit the surface of the skin and serve as the first line of defense protecting the skin from external stimuli. When this balance is disrupted, skin may feel sensitive or rough in texture, and probiotic-derived or fermented ingredients are introduced as ingredients that may help manage this skin environment.

However, most probiotic-related ingredients used in cosmetics are in the form of lysed bacteria or fermentation filtrates, and it is difficult to assert that live bacteria act directly on the skin to produce immediate efficacy. Since the formulation and purpose differ by product, it is more accurate to understand them as 'ingredients that may help support skin condition care.'

Mechanism: The Relationship Between the Skin Barrier and Microbial Balance

The skin barrier is known to function stably when the lipid structure of the stratum corneum (ceramides, cholesterol, fatty acids, etc.) and the surface microbial balance are maintained together. When the barrier weakens, moisture can easily escape and external irritants can penetrate more easily, creating a vicious cycle where skin becomes dry and sensitive.

Probiotic-derived ingredients are known to help manage this microbial environment, but the core of actual skin barrier care remains the combination of lipid ingredients and moisturizing ingredients. In other words, a practical home care strategy is to approach probiotics as a supplementary care element while keeping the focus of barrier recovery on proven ingredients like ceramides and panthenol.

How skin condition changes appear over time

In the early period (1-3 days) when skin becomes sensitive or the barrier weakens, redness, tightness, and mild irritation can be prominent. During this period, minimizing irritation and prioritizing soothing-focused care comes first.

Once entering the recovery period (from day 4-7 onward), redness and irritation subside, but signs of dryness such as inner tightness or flaking often remain. From this point, it may help to shift care focus from soothing toward deep hydration and skin texture refinement.

This progression applies not only to post-procedure skin but similarly to general skin condition decline where the barrier has been disrupted by seasonal changes, frequent cleansing, or external irritants.

Step-by-step home care: from soothing irritation to deep hydration

Step 1, in the early period when irritation is felt, low-irritation soothing care that is gently patted in for absorption after cleansing, without stimulating the skin, comes first. During this period, a simply formulated cream focused on soothing and barrier care is more suitable than products with complex ingredient lists.

Step 2, after redness and irritation subside, it is good to switch to a highly moisturizing cream so that internal skin moisture does not become deficient. If inner tightness is left unaddressed during this period, flaking may become prominent or skin texture may appear rough.

Step 3, under the concept of managing microbial balance and barrier condition together during normal times, it is good to consistently use products containing lipid and moisturizing ingredients like ceramides and panthenol to maintain skin condition.

Home care determines recovery after procedures

This step-by-step approach applied to actual post-procedure home care is the 2-STEP composition of ZXQMAGAZINETERM1ZXQ cream. The Ultra Cera-Rich Cream is a product focused on soothing and barrier care for the period of redness and heat sensation felt 1-3 days immediately after a procedure, while the Hydro Re-Boosting Cream is designed to help with deep hydration care during the recovery period (from day 4 onward) when inner tightness, flaking, and skin texture refinement are needed. Both products contain a lipid ingredient composition including 5 types of ceramides to support barrier care, and are each priced at 59,000 won for 50ml, available on the official online store (abijoushop.com). See more → ZXQMAGAZINETERM1ZXQ Cream.