Hyaluronic acid serums are designed to draw water into the upper layers of the skin for a fresher, more cushioned look. The most elegant formulas pair that hydration with a texture you will happily use every day.
By Peony Seoul · Editorial update · Our research method
Which Korean hyaluronic acid serum should you compare?
Start with Torriden DIVE-IN if you want a straightforward hydration comparison, WELLAGE if bottle size is your main buying question, or Anua if you specifically want to compare a PDRN-containing formula. These are three different purchase decisions. We have not measured their hydration performance against one another.
| Option | Useful distinction | Trade-off to consider |
|---|---|---|
| Torriden DIVE-IN Serum | The US brand page lists 50 ml, several forms of hyaluronic acid, panthenol and allantoin. | The number of hyaluronic acid forms does not establish that it hydrates better than the other two finished formulas. |
| WELLAGE Real Hyaluronic Blue 100 Ampoule | The referenced Olive Young listing is a 100 ml bottle with a separate 4 ml kit. | Separate the main bottle from promotional extras when comparing sizes. A larger pack is only useful if you will use it. |
| Anua PDRN Hyaluronic Capsule 100 Serum | The referenced listing contains 30 ml. “100” is part of the product name, not the bottle volume. | Decide whether you want this combination formula before paying for another serum; the PDRN name alone cannot establish a better result. |
References: Torriden’s formula and directions, WELLAGE pack listing and Anua pack listing.
Dry, oily or sensitive skin: what changes?
For dry-feeling skin, first decide whether your moisturizer is doing its job. A serum adds a layer, so it is worth comparing only if the rest of the routine feels comfortable and you still want one. For oily skin, compare a small amount with your usual moisturizer and sunscreen, rather than assuming a watery texture guarantees a matte finish.
For sensitive skin, check the complete ingredient list against anything you already know you react to. “Hyaluronic,” “soothing” and “gentle” cannot guarantee tolerance. Introduce one product at a time using the small-area testing and introduction worksheet.
Serum, ampoule or toner: do you need all three?
No. Those names describe how a brand positions its product; they are not a standardized strength scale. An ampoule is not automatically more concentrated than a serum. Compare the formula and directions, and choose one optional hydration step before buying an entire matching range.
DermNet explains that humectants attract and retain water in the outer skin layer, while occlusive ingredients reduce evaporative water loss. This helps explain why a hydrating layer and a moisturizer can have different roles. It does not prove one of these three serums is superior.
Where to put it, and what to do if it pills
Use the product’s directions. A simple order is cleanser, optional toner, serum, moisturizer, then sunscreen in the morning. Torriden directs users to apply an appropriate amount and pat lightly; there is no universal pump count for every dropper, bottle or face.
If your layers roll up, first simplify the optional steps and compare one change at a time. Keep the sunscreen amount required by its directions. Our pilling worksheet helps distinguish a routine problem from a reason to buy another product.
Compare the cost of the bottle you will receive
Use price ÷ milliliters × 100. As an illustration, $18 for 30 ml is $60 per 100 ml, while $24 for 50 ml is $48 per 100 ml. These are examples, not current offers. Compare the same currency, include delivery, and check the seller’s country and exact variant. Stylevana links on this site currently open its US storefront.
Torriden, Anua or WELLAGE: the direct comparisons
We compare published product details and buying trade-offs. We have not tested these serums against one another.
Torriden DIVE-IN vs Anua PDRN
Torriden’s referenced bottle is 50 ml; Anua’s is 30 ml. Anua is the PDRN-named option. If PDRN is not something you specifically want, the extra ingredient claim alone is not a reason to pay more for your hydration step.
Torriden DIVE-IN vs WELLAGE Blue Ampoule
WELLAGE’s main bottle has twice the volume. Excluding delivery, its cost per ml is lower only when it costs less than twice as much. Exclude the separate 4 ml promotional kit from this calculation. A larger bottle is useful only if you expect to use it.
Anua PDRN vs WELLAGE Blue Ampoule
Both names include “100”, but their referenced main bottles are 30 ml and 100 ml respectively. The number in a name is not a standardized concentration or performance score. Compare the exact formula, pack and delivered cost; neither listing proves which will suit your skin better.
Pack references checked 12 September 2026: Torriden 50 ml · Anua 30 ml · WELLAGE 100 ml + 4 ml.
Compare your prices and delivery costs in the bottle-value calculator →
Compare the delivered cost per 100 mL
Enter two current offers in the same currency, using the bottle size printed on each pack. Prices are not fetched automatically. Include tax in the pack price and allocate delivery once; leave out gifts and samples unless they are the same product and size.
A number in a product name may describe a product line, not bottle size. For example, check the actual volume on an Anua PDRN Hyaluronic Acid Capsule 100 Serum pack. Compare complete formulas and routine fit alongside price.
Formula: (pack price + allocated delivery and fees) ÷ total mL × 100. Use whole bottles and a volume greater than zero.
This compares unit cost. It does not rank effectiveness or predict how long a pack lasts.
Who this guide is for
Dehydrated skin
Fine dehydration lines
Lightweight routines
Layering under moisturiser
A simple routine
Start on slightly damp skin
A light layer of toner or a touch of water gives the serum moisture to bind.
Use a small amount
Follow the amount and application directions on the specific serum; dropper and pump sizes vary.
Follow with cream
Seal the hydrating layer with a moisturiser suited to your skin type.
Compare fit and trade-offs
| Product | Format | Consider it for | What to check |
|---|---|---|---|
| Torriden DIVE-IN Low Molecular Hyaluronic Acid Serum | Watery gel serum | Comparing a 50 ml hydration serum | Check your regional ingredient list. Published ingredients do not establish tolerance or pilling with your existing routine. |
| WELLAGE Real Hyaluronic Blue Ampoule 100 | Ampoule; skin feel has not been independently tested | Comparing a larger hydration-serum bottle | Match the main bottle and any promotional extras. Check the current full formula and directions; size alone says nothing about skin tolerance. |
| Anua PDRN Hyaluronic Acid Capsule 100 Serum | Serum; finish has not been independently tested | Comparing a PDRN-named hydration serum | “100” is part of the name, not a 100 ml size or an independent performance score. Match the full product listing. |
Peony Seoul shortlist
Research-based options selected for their different formats and routine roles. We have not tested these products hands-on. Shop links on product pages may earn us a commission; see our affiliate disclosure.
Torriden
DIVE-IN Low Molecular Hyaluronic Acid Serum
Comparing a 50 ml hydration serumA hyaluronic-acid serum with a published 50 ml pack and ingredient list. A practical reference for comparing bottle value and an optional hydration step.
Read the full review →
WELLAGE
Real Hyaluronic Blue Ampoule 100
Comparing a larger hydration-serum bottleA 100 ml main ampoule in the referenced retailer set, which also includes a separate 4 ml kit. Keep those contents separate when comparing bottle value.
Read the full review →
Anua
PDRN Hyaluronic Acid Capsule 100 Serum
Comparing a PDRN-named hydration serumA PDRN-named hyaluronic serum in a 30 ml referenced pack. Compare the exact product and formula; the “100” in its name is not its bottle volume.
Read the full review →How we compared these products
We compared purpose, texture, skin-type fit, routine compatibility, published formula details, brand standing and access through reputable retailers. The shortlist is organised around useful differences. We do not use commission rates as a selection criterion or treat brand claims as our own test results.
Frequently asked
What does a hyaluronic acid serum achieve?
It supports surface hydration and can make dehydrated skin look smoother and more comfortably plumped.
Can oily skin use a hyaluronic acid serum?
Yes. Many have a light, water-gel texture that suits oily skin, though a separate moisturiser may still help reduce water loss.
When should hyaluronic acid serum be applied?
Use it after cleansing and toner, if you use one, and before moisturiser. Apply sunscreen as the final morning step.
Product references and further reading
- Torriden DIVE-IN Low Molecular Hyaluronic Acid Serum: brand or retailer product reference
- WELLAGE Real Hyaluronic Blue Ampoule 100: brand or retailer product reference
- Anua PDRN Hyaluronic Acid Capsule 100 Serum: brand or retailer product reference
References identify the product or product line; check the exact regional formula and current pack. Our comparison is an editorial interpretation, not a clinical or laboratory result. Send a correction with the page and source.