保湿
Hyaluronic Acid
INCI: Sodium Hyaluronate · Hyaluronate · Sodium Acetylated Hyaluronate · Hydrolyzed Hyaluronic Acid
The Chinese name for Hyaluronic Acid is 玻尿酸 (pinyin: bō niào suān). Also known as 透明质酸, HA.
Quick Facts
- Chinese
- 玻尿酸 (bō niào suān)
- English
- Hyaluronic Acid
- Also known as
- 透明质酸, HA
- INCI
- Sodium Hyaluronate
- Category
- 保湿
- Effective %
- 0.5% – 3%
- Pregnancy
- Generally OK
Hyaluronic acid is a humectant your skin produces naturally, capable of holding up to 1,000 times its weight in water. It's a top-tier hydrator for dry, sensitive, or barrier-damaged skin, and a safe pick for combination and oily types since it adds water without any greasiness. Nearly every skin type tolerates it.
Key benefits
- Powerful water-binding: forms a hydrating film in the stratum corneum that keeps skin moisturized for 8–12 hours — backed by extensive clinical evidence
- Softens fine lines: well-hydrated skin looks plumper, visibly fading fine and dehydration lines, especially around the eyes and nasolabial folds — consistently reported in practice
- Calms sensitivity: gentle and non-irritating, it actually supports repair of a damaged barrier — safe for sensitive skin and right after cosmetic procedures
- Improves uptake of other actives: hydrated skin lets follow-up ingredients like niacinamide penetrate better — limited evidence
Good for
- Dry skin
- Sensitive or barrier-damaged skin
- Fine and dehydration lines around the eyes
- Hydration for combination skin
- Post-procedure recovery
Use with caution
- Very dry environments (airplane cabins, northern winters): HA can pull water out of the skin instead — seal it with an occlusive right after applying
- Layering too many HA products: more than 3 layers of serum tends to over-draw water, feeling greasy or triggering congestion
- Skipping an occlusive on top: HA adds water but doesn't lock it in — dry and sensitive skin must follow with a cream or facial oil
Pairing notes
✓ Pairs well with
✕ Avoid mixing with
Frequently asked
What is Hyaluronic Acid in Chinese?
Hyaluronic acid is 玻尿酸 (bō niào suān) in Chinese — the same term used in Taiwan — and also appears as 透明质酸 (tòu míng zhì suān) or HA on ingredient labels. It's a humectant naturally present in skin that binds large amounts of water for lasting hydration.
How much hyaluronic acid serum should I use?
3–4 drops per application is plenty. Apply to damp skin (don't fully dry your face after cleansing), then press it in. More than that just feels sticky and can hinder absorption — no need to spread a thick layer over the whole face.
Can I use hyaluronic acid with retinol?
Yes, but keep them separate: HA in the morning for hydration, retinol at night — don't mix them together. HA actually helps buffer retinol's irritation, so they make a good pairing.
I have oily skin — will HA clog pores or cause breakouts?
No. HA is lightweight and adds only water, not oil. The key is a small dose (3–4 drops) and not piling heavy products on top. Plenty of oily-skinned users run it comfortably, even through summer.
Does the molecular weight of hyaluronic acid matter?
Yes. High-molecular-weight HA (1–1.3 million Daltons) stays on the surface to hydrate; low-molecular-weight (50–100k Daltons) reaches deeper. Premium products blend several weights, but real-world differences are small — a well-chosen concentration matters more than molecule size.
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Educational reference only — results vary by person; see a doctor for serious skin issues.