Hyaluronic Acid（玻尿酸）保濕之王｜分子大小點揀先啱

擦極都唔夠潤？可能係你揀錯咗玻尿酸分子大小

「保濕之王」玻尿酸（Hyaluronic Acid）幾乎每個人嘅護膚櫃都有一支，但你有冇發現，明明成分表寫住有玻尿酸，皮膚用完仍然覺得乾？其實問題可能出喺分子大小，而唔係成分本身有冇效。

Hyaluronic Acid, the so-called "king of hydration," sits in almost everyone's skincare cabinet. But have you ever noticed that even with HA listed on the label, your skin still feels dry afterward? The issue may lie in molecular weight, not whether the ingredient itself works.

玻尿酸係咩？皮膚科學入面嘅「儲水海綿」

玻尿酸係一種天然存在於皮膚真皮層嘅多醣體，本身可以吸收比自身重量多達1000倍嘅水分，喺皮膚科學入面扮演「儲水海綿」嘅角色。隨著年齡增長同環境刺激，皮膚天然嘅玻尿酸含量會逐漸下降，令皮膚保水能力減弱，容易出現細紋同暗啞。

Hyaluronic Acid is a naturally occurring polysaccharide found in the skin's dermis, capable of holding up to 1,000 times its weight in water — functioning like a "water-storing sponge" in skin science. As we age and skin faces environmental stress, natural HA levels gradually decline, weakening the skin's water-retention ability and making fine lines and dullness more likely to appear.

研究點講：分子大小點解影響效果

皮膚科研究指出，大分子玻尿酸主要停留喺皮膚表層，形成保濕膜鎖住水分；細分子玻尿酸（或稱水解玻尿酸）就可以滲入更深層嘅角質層，由內而外補水。市面上唔少精華都會混合使用大小分子，目的就係做到表層鎖水同深層補水雙重效果，呢個亦係點解揀選產品時，成分表複合玻尿酸種類多寡值得留意。體外滲透測試顯示，分子量細至5-8 kDa嘅玻尿酸可以穿透角質層屏障，進入表皮同真皮層；臨床研究亦記錄到混合分子量玻尿酸配方喺持續使用12星期後，可以顯著改善皮膚保水度同經皮水分流失（TEWL）。

Dermatological research shows that high-molecular-weight HA mostly sits on the skin's surface, forming a hydrating film to lock in moisture, while low-molecular-weight (hydrolyzed) HA can penetrate deeper into the stratum corneum for hydration from within. Many serums combine multiple molecular weights to achieve both surface-level moisture locking and deeper hydration. In vitro penetration testing shows HA at 5–8 kDa molecular weight can pass through the stratum corneum into the epidermis and dermis, and clinical studies have recorded significant improvements in skin hydration and transepidermal water loss (TEWL) after 12 weeks of consistent use of hybrid molecular-weight HA formulas.

推介：多重玻尿酸保濕組合

Standard Seoul Hydrating Bouncy Booster Serum 採用多重分子玻尿酸配方，質地水潤好推開，適合日常保濕打底，令肌膚由表層到深層都補足水分。

The Standard Seoul Hydrating Bouncy Booster Serum uses a multi-molecular-weight HA formula with a watery, easy-to-spread texture — ideal as a daily hydration base that replenishes moisture from the surface down to deeper layers.

如果想加強保濕同時兼顧提亮同抗老，可以配合 KOPHER Curepair Signature Ampoule，同時攝取玻尿酸同煙醯胺，一步到位。

For extra hydration alongside brightening and anti-aging benefits, pair it with the KOPHER Curepair Signature Ampoule, which delivers both hyaluronic acid and niacinamide in one step.

玻尿酸常見迷思：濃度越高越好？

  • 迷思一：玻尿酸精華濃度越高，補水效果越好。事實：濃度只係其中一個因素，分子大小同配方設計影響更大，過度追求高濃度單一分子玻尿酸，喺乾燥環境下反而可能加劇拔水問題。
  • 迷思二：用咗玻尿酸精華就唔使再用面霜。事實：玻尿酸負責「吸水」，面霜等鎖水產品負責「留住水分」，兩者角色唔同，跳過鎖水步驟好容易前功盡廢。
  • 迷思三：敏感肌唔可以用玻尿酸。事實：玻尿酸本身係人體天然成分，一般耐受度高，敏感肌都適合使用，反而更需要留意配方入面有冇其他刺激性添加物。

Common myths about hyaluronic acid: Myth 1 — the higher the concentration, the better the hydration. Fact: concentration is only one factor; molecular weight and formulation matter just as much, and over-relying on a single high-concentration HA can backfire in dry environments by pulling moisture away. Myth 2 — using an HA serum means you can skip moisturizer. Fact: HA's job is to draw in water, while a moisturizer's job is to seal it in — skipping the sealing step often undoes the benefit. Myth 3 — sensitive skin can't use HA. Fact: HA is naturally found in the body and is generally well-tolerated, even for sensitive skin — it's other additives in a formula that are more worth watching for.

常見問題 FAQ

  • Q: 點解用咗玻尿酸產品仲係覺得乾？
    A: 有可能係環境濕度太低，玻尿酸喺乾燥環境下反而會由深層拉水分去表層蒸發，建議喺潮濕環境使用或配合乳霜鎖水。
    Q: Why does my skin still feel dry after using HA products? A: In very dry environments, HA can pull moisture from deeper layers toward the surface, where it evaporates. It's best used in humid conditions or layered with a moisturizer to lock it in.
  • Q: 油性肌膚都需要用玻尿酸嗎？
    A: 需要，出油同缺水可以同時存在，玻尿酸質地清爽唔會加重出油問題，反而有助平衡水油。
    Q: Does oily skin still need HA? A: Yes — oiliness and dehydration can coexist. HA has a lightweight texture that won't worsen oiliness and can actually help balance water and oil levels.
  • Q: 玻尿酸精華應該點樣使用先啱？
    A: 建議喺潔面後、皮膚仍帶少量水分嘅時候使用，再以乳霜或面霜鎖住水分，效果會更明顯。
    Q: What's the correct way to apply HA serum? A: Apply it after cleansing while skin is still slightly damp, then seal it in with a moisturizer or cream for more noticeable results.

由分子大小開始，重新認識保濕之王

玻尿酸唔係「有用就得」咁簡單，分子大小、使用環境同配搭步驟同樣重要。由 Standard Seoul Hydrating Bouncy Booster Serum 到 KOPHER Curepair Signature Ampoule，by Glowsis 為想真正解決缺水問題嘅你提供合適選擇。

Hyaluronic Acid isn't as simple as "just use it and it works" — molecular weight, environment, and layering all matter. From the Standard Seoul Hydrating Bouncy Booster Serum to the KOPHER Curepair Signature Ampoule, by Glowsis offers suitable options for anyone serious about solving dehydration for good.

Sources

  • European Medical Journal (Dermatology) — "Update on Low-Molecular Weight Hyaluronic Acid in Dermatology: A Scoping Review"
  • PMC — "Efficacy and Tolerability of Stable Hybrid Cooperative Complexes of High- and Low-Molecular Weight Hyaluronic Acid in Asian Patients"
Back to blog