Hyaluronic Acid Principle and Effects: Why It's Good for Your Skin

One of the most frequently seen ingredient names on cosmetic ingredient lists is hyaluronic acid. This component appears consistently in skin booster procedures, fillers, and various hydrating products—but how exactly does it work?

To put it simply, hyaluronic acid acts as a 'moisture-retaining network' that holds water within the skin. Rather than directly creating moisture, it works by capturing existing moisture or moisture entering from outside, preventing it from escaping.

How hyaluronic acid works

Hyaluronic acid (Hyaluronic Acid) is a polysaccharide component naturally present in the dermal layer and extracellular matrix of our body. Due to its molecular structure, it has a strong property of attracting and retaining water molecules, earning it the nickname 'natural moisture sponge.'

When applied to the skin, it forms a moisture barrier on the surface and stratum corneum, providing immediate hydration. Low-molecular-weight hyaluronic acid penetrates deeper layers and helps refine skin texture. However, since hyaluronic acid itself retains moisture rather than preventing evaporation, its moisturizing effects can last longer when used together with barrier-protecting ingredients like ceramides.

As we age or are exposed to UV rays and dry environments, the amount of hyaluronic acid in the skin naturally decreases. For this reason, skin booster treatments work by directly injecting hyaluronic acid into the skin to promote hydrated and elastic skin texture.

Post-treatment progression: How does skin change over several days?

Immediately after hyaluronic acid-based skin booster treatments (such as Rejuran, Juvelook, Revive, and Laetigen Collagen Booster), mild redness, slight swelling, and itching may appear for several days. This occurs because the skin experiences minor irritation during the procedure, and these reactions typically subside naturally.

Days 1-3 post-treatment are the most sensitive period for the skin. It is best to focus on calming redness and heat while soothing the disrupted skin condition. From day 4 onwards, redness gradually subsides and the skin enters a phase where internal dryness becomes more noticeable, manifesting as tightness and fine flaking. During this period, transitioning to hydration-focused care helps refine skin texture.

Home care by phase: How to divide it

During days 1-3 post-treatment, it is important to avoid rubbing sensitized skin and focus on soothing care to reduce redness and heat. Cleanse gently with lukewarm water and minimize skincare steps.

From day 4 onwards, as redness subsides, you may feel tightness and dryness within the skin. During this period, it helps to naturally transition to hydrating care that replenishes and locks in moisture, which supports skin texture refinement.

In other words, post-treatment recovery is most efficient when approached in two phases: 'calming first, then deep hydration' for managing skin condition.

Why manage in 2-STEP phases

The skin's care needs differ between the period when redness remains and the period when redness has subsided but internal dryness becomes prominent. Rather than managing the entire process with a single cream, phased home care tailored to each stage can better support skin condition recovery.

FAQ

Post-treatment recovery is determined by home care

ABG Jou cream is designed in 2-STEP to address these phase-specific differences. Days 1-3 post-treatment call for 'Ultra Sera-Rich Cream' to focus on calming redness and barrier care, while from day 4 onwards when redness has subsided and tightness is felt, 'Hydro Re-Boosting Cream' focuses on deep hydration and skin texture care. Switching to the appropriate cream for each phase can help manage skin condition after hyaluronic acid treatment.