Hyaluronic Acid Can Actually Dehydrate Your Skin (Here's When)
The internet's favorite hydrator has a counterintuitive dark side — in dry air, a humectant with nothing to seal it can pull water out of your skin instead of into it.
Good choice for Dehydration
What Makes This Different
It replaces the usual powder-and-water mixing with a pre-made alginate gel and a calcium sulfate powder, and declares eight hyaluronic acids at parts-per-million and parts-per-billion levels.
Dermatory
Dermatory Hyal Shot Barrier Ampoule Gel Modeling Pack B5 Review
No-Mix Rubber Mask
mask peel dermatologist developed Paraben Free Fungal Acne Safe Not Cruelty Free
A convenient, no-mixing rubber modeling mask that sets from an alginate gel and calcium powder and leaves skin plump, cool and hydrated through occlusion. The eight hyaluronic acids on the label are declared at parts-per-million and parts-per-billion levels, it contains fragrance, and single-use sets are expensive, so treat it as an occasional spa-style treat.
Made in South Korea All-year use
Run it through our tools Clashes with my routine? Pregnancy-safe? Find a cheaper dupe Patch-test it first
Few English-language reviews exist for this newer mask, so its assessment relies on the fully declared two-part formula and established understanding of alginate modeling masks. Real-world satisfaction data are limited.
Verdicts All dehydration products →All dullness products →All dryness products →
How well it fits each concern
Verdict by concern tap a concern for the case
Good choicefor DehydrationIn your profileYou chose · Glycerin is a reference standard by mechanism for dehydration; this peel carries it high in the ingredient list.
The case for it
- Glycerin has trial-supported standing for this concern.
- It is present at an effective concentration, declared or high in the ingredient list.
- The formula carries no trigger this concern is sensitive to, with the cautions noted.
Same rule for everyone. “Good choice” is the verdict on 9,564 of 45,024 concern verdicts across the catalog; rule R5 decided 9,072 of them. As of September 25, 2026, engine 5.1.1.
Brand or formulator? Disclose a concentration or correct a fact →
Show the work
- Rule
- R5 — Trial-supported or guideline-supported active, adequately or plausibly dosed. · the full register
- Carrying active
- Glycerin
- Standing
- supported — its mechanism is established
- Form
- adequate — studied range 20%, from the trials on the row; needs leave-on contact; judge it after ~1 weeks
- Tolerability
- standard
- Row checked
- against its sources on July 17, 2026 (evidence table ev-2026.09-r228)
The studies behind the evidence row
- USP glycerin monograph / Fluhr et al., glycerol and the skin (review) — glycerin is the reference humectant, drawing and holding water in the stratum corneum — reference work
Promisingfor DullnessIn your profileYou chose · Glycerin has trial-level evidence for dullness but no guideline or regulatory standing yet — promising, short of a recommendation; the other actives here are not yet assessed for it.
The case for it
- Glycerin has trial-level evidence for this concern but no guideline or regulatory standing yet.
- It is present at an effective concentration, declared or high in the ingredient list.
- The formula carries no trigger this concern is sensitive to, with the cautions noted.
What would change this: Guideline or regulatory standing for the active on this concern would move this from a promising bet to a recommendation.
Same rule for everyone. “Promising” is the verdict on 7,858 of 45,024 concern verdicts across the catalog; rule R9p decided 7,858 of them. As of September 25, 2026, engine 5.1.1.
Brand or formulator? Disclose a concentration or correct a fact →
Show the work
- Rule
- R9p — 0.5.0: 'Unproven' beside three filled dots read as one question answered twice with opposite words (7,018 rows). The chip measures standing, the dots measure trial volume; where the row carries at least one RCT or a tier-2 source (moderate dots) and the active is present at a working level, the honest word is Promising. Unproven is reserved for plausible-standing rows with limited or weak evidence, or an under-dosed form. Same rank as Unproven — a bet either way; the dots order them. · the full register
- Carrying active
- Glycerin
- Standing
- plausible — trials support it
- Form
- adequate — studied range 2–20%, from the trials on the row; needs leave-on contact; judge it after ~1 weeks
- Tolerability
- standard
- Row checked
- against its sources on July 17, 2026 (evidence table ev-2026.09-r228)
The studies behind the evidence row
- Harry's Cosmeticology / Baran & Maibach Textbook of Cosmetic Dermatology — humectant, emollient and occlusive classification — standard reference text
Good choicefor DrynessIn your profileYou chose · Glycerin is a reference standard by mechanism for dryness; this peel carries it high in the ingredient list.
The case for it
- Glycerin has trial-supported standing for this concern.
- It is present at an effective concentration, declared or high in the ingredient list.
- The formula carries no trigger this concern is sensitive to, with the cautions noted.
Cautions: fragrance.
Same rule for everyone. “Good choice” is the verdict on 9,564 of 45,024 concern verdicts across the catalog; rule R5 decided 9,072 of them. As of September 25, 2026, engine 5.1.1.
Brand or formulator? Disclose a concentration or correct a fact →
Show the work
- Rule
- R5 — Trial-supported or guideline-supported active, adequately or plausibly dosed. · the full register
- Carrying active
- Glycerin
- Standing
- supported — its mechanism is established
- Form
- adequate — studied range 2–20%, from the trials on the row; needs leave-on contact; judge it after ~1 weeks
- Tolerability
- standard — fragrance load
- Row checked
- against its sources on July 17, 2026 (evidence table ev-2026.09-r228)
The studies behind the evidence row
- International Cosmetic Ingredient Dictionary and Handbook — declared function — Personal Care Products Council
- Harry's Cosmeticology / Baran & Maibach Textbook of Cosmetic Dermatology — humectant, emollient and occlusive classification — standard reference text
As a maskNot judged: what a mask is for — works within its wear time, benefit outlasts the mask, comes off cleanly — cannot yet be measured from the ingredient list (only intensity without injury can).
A verdict is DermApproved’s assessment of how well a product’s ingredients fit a concern — never a claim about what the product treats. Evidence dots and collected reviews sit beside it and are never blended in. Rules 0.5.1 · evidence table ev-2026.09-r228 · how we decide
Assessment
Pros & Cons
Pros
- ✓ No water or measuring needed
- ✓ Sets into a flexible mask that peels off in one piece
- ✓ Occlusive seal gives immediate, visible hydration
- ✓ Panthenol and allantoin add soothing
- ✓ Transparent label declares hyaluronic acid levels
- ✓ Boosts any serum applied underneath
Cons
- ✗ Hyaluronic acids are present at very low levels
- ✗ Contains fragrance, linalool and limonene
- ✗ Expensive per single use
- ✗ Messy if not applied thickly enough
Review
Full Review
Rubber modeling masks are a Korean spa staple: a powder is mixed with water into a paste, spread thickly over the face, and within minutes it sets into a flexible, rubbery sheet that peels off in one piece. Dermatory's Hyal Shot Barrier Ampoule Gel Modeling Pack B5 simplifies the ritual. Instead of mixing powder with water, you combine a pre-made gel with a small sachet of powder, so there is no measuring and less mess, which is what the Korean on the front of the box promises: convenient, no water needed. The mask is pleasant and fun to use. The long list of hyaluronic acids on the label, however, deserves a closer look before you pay for it.
The chemistry of a modeling mask is simple and clever. The gel contains algin, a seaweed-derived alginate, and the powder contains calcium sulfate. When they meet, calcium ions cross-link the alginate chains and the mixture sets into a soft rubber. Diatomaceous earth bulks the gel and helps it set evenly. Once on the face, the setting mask forms a snug, occlusive seal. That seal is where most of the benefit comes from: it traps moisture from the gel against the skin, slows evaporation and gives a cooling sensation, so when the mask is peeled away, skin looks plumper, smoother and more hydrated. It is essentially a very effective, temporary occlusive treatment.
The label highlights eight forms of hyaluronic acid, and the Korean ingredient list, admirably, gives their concentrations. Sodium hyaluronate in the gel is declared at 20 parts per million, hydroxypropyltrimonium hyaluronate at 2 ppm, and the remaining six forms at between 200 and 4 parts per billion. For context, 20 ppm is 0.002 percent, and hyaluronic acid serums typically use 0.1 to 1 percent. At these levels, the hyaluronic acids contribute little on their own; the hydration you notice comes from the water, glycerin, erythritol, xylitol and glucose in the gel, held against the skin by the occlusive mask. The B5 in the name refers to panthenol, which appears in both the gel and the powder and adds a gentle soothing effect, alongside allantoin and a lactobacillus ferment.
Two practical points deserve mention. The gel contains fragrance, with linalool and limonene declared, which is a little surprising from a brand that emphasises sensitive skin. And ultramarines give the mask its blue colour. Neither is a problem for most people, but those with fragrance allergies should be aware. Diatomaceous earth and calcium sulfate are safe in this format, but, like all modeling masks, the product should be kept away from the eyes, nostrils and mouth.
Using it is straightforward. After cleansing and applying a light toner or serum, pour the powder into the gel pouch or bowl, stir quickly for about thirty seconds, and spread a thick, even layer over the face, avoiding the eyes and lips. Leave it for fifteen to twenty minutes until it has set, then peel it off from the edges, ideally in one piece, and follow with moisturiser. Because the mask is occlusive, applying a hydrating serum underneath makes the effect noticeably stronger, which is a common spa trick with modeling masks. A few other tips make the experience smoother. Pulling hair back with a band and applying the mask more thickly at the edges makes peeling easier, since thin edges tend to tear and crumble. Working quickly after mixing matters too, because the paste starts to set within a couple of minutes. Some people apply a thin layer of moisturiser to the eyebrows and hairline first so the rubber does not grip fine hairs. And because the mask holds everything underneath it against the skin, it is best not to layer strong acids or retinoids beneath it, which could become more irritating under the occlusive seal than they would be on their own.
The result is immediate, satisfying hydration and a cooled, calm feeling, particularly useful after sun exposure, before an event, or when skin feels tight and dull. The effect lasts through the day or night when sealed with a moisturiser. It will not change skin over the long term, and it is not a treatment for any specific condition.
The main drawback is cost. Each gel and powder set is designed for a single application, and at around fifteen dollars per set from US-facing retailers, it is an occasional treat rather than a weekly habit. Multipacks sold elsewhere lower the cost per mask. For the price, you are paying for the experience and the convenience of a no-mixing modeling mask more than for the hyaluronic acid.
Dermatory is a Korean dermo-cosmetic brand launched in 2018, focused on hypoallergenic products for sensitive skin, and the Hyal Shot Barrier B5 line groups its hydration products. The modeling pack is a newer addition, and English-language reviews are limited.
In short, this is a well-designed, convenient rubber mask that hydrates through occlusion, with a label that honestly declares its tiny hyaluronic acid levels. Enjoy it as an occasional spa-style treatment, pair it with your own serum underneath for the best results, and do not buy it expecting eight types of hyaluronic acid to do the heavy lifting.
Formula
Key Ingredients
The hero actives that drive this product's performance.
| Ingredient | Function | Evidence |
|---|---|---|
| Algin | The seaweed alginate that sets into a rubbery sheet when mixed with the calcium sulfate powder, sealing moisture against the skin. | Not yet assessed |
| Panthenol | The B5 in the name, present in both gel and powder to soothe and hydrate skin under the occlusive mask. | Established mechanism for Dehydration · established mechanism |
| Sodium Hyaluronate (20 ppm (0.002%)) | The highest of eight declared hyaluronic acid forms, at 20 ppm; the others are in parts per billion, so their contribution is small. | Established mechanism for Dehydration · established mechanism |
| Glycerin | With erythritol, xylitol and glucose, provides most of the hydration held against the skin while the mask sets. | Established mechanism for Dehydration · established mechanism |
Ingredient standings describe the active at treatment-level doses and vehicles; this product's own condition grades weigh its actual formula.
Full INCI List
Gel: Water, Diatomaceous Earth, Glycerin, Algin, PEG-75, Butylene Glycol, 1,2-Hexanediol, Tetrasodium Pyrophosphate, Hydroxyacetophenone, Erythritol, Lactobacillus Ferment, Panthenol, Allantoin, Disodium EDTA, Xylitylglucoside, Ultramarines, Anhydroxylitol, Fragrance, Xylitol, Glucose, Linalool, Sodium Hyaluronate (20 ppm), Limonene, Squalane, Aloe Barbadensis Leaf Extract, Laminaria Japonica Extract, Dioscorea Japonica Root Extract, Ulmus Davidiana Root Extract, Viola Mandshurica Flower Extract, Hydroxypropyltrimonium Hyaluronate (2 ppm), Sodium Acetylated Hyaluronate (200 ppb), Hydrolyzed Hyaluronic Acid (200 ppb), Hyaluronic Acid (50 ppb), Sodium Hyaluronate Crosspolymer (20 ppb), Hydrolyzed Sodium Hyaluronate (20 ppb), Potassium Hyaluronate (4 ppb). Powder: Glucose, Calcium Sulfate, Sodium Dehydroacetate, Sodium Benzoate, Allantoin, Panthenol, Water, Lactobacillus Ferment, Squalane, Butylene Glycol, 1,2-Hexanediol, Sodium Hyaluronate (200 ppb), Hydroxypropyltrimonium Hyaluronate (20 ppb)
✓ Pregnancy Safe ✗ Fragrance Free✓ Alcohol Free✗ Oil Free✓ Silicone Free✓ Paraben Free✓ Sulfate Free✗ Cruelty Free✗ Vegan✓ Fungal Acne Safe
FragranceLinaloolLimonene
FragranceLinaloolLimonene
Compatibility
Skin Match
Routine Step
treatment
Time of Day
PM
Layering Tips
Apply a hydrating serum first, spread the mixed mask thickly over it, peel off after 15 to 20 minutes and finish with moisturiser.
Results Timeline
Immediate: plumper, smoother, cooled and hydrated skin after peeling. Effects last through the day or night with moisturiser. No long-term changes are expected.
A hydrating serum underneathA moisturiser afterwards
Planning a combo? Check it against what you already use
Sample AM Routine
- Cleanser
- Toner
- Serum
- Moisturiser
- Sunscreen
Sample PM Routine
- Cleanser
- Toner
- Hydrating serum
- THIS PRODUCT (occasionally)
- Moisturiser
Evidence
Science & Expert Perspective
The Science
Rubber or modeling masks rely on ionic gelation. Alginate, a polysaccharide extracted from brown seaweed, forms a gel when calcium ions cross-link its guluronic acid blocks. In this product, the calcium sulfate in the powder supplies the calcium, tetrasodium pyrophosphate slows the reaction so there is time to apply the mask, and diatomaceous earth provides body. The result is an occlusive, flexible film that reduces transepidermal water loss and holds the hydrating gel against the skin, producing a temporary increase in stratum corneum hydration and a cooling sensation.
The gel's humectants, including glycerin, erythritol, xylitol, xylitylglucoside, anhydroxylitol and glucose, are the main contributors to hydration. The declared hyaluronic acid forms range from 20 ppm to 4 ppb; typical effective concentrations in leave-on hydrating products are around 0.1 to 1 percent, so their contribution here is minimal. Panthenol and allantoin provide soothing and barrier-supporting effects, and a lactobacillus ferment is included as a postbiotic.
Because the mask is occlusive, any serum applied beneath it will remain in contact with the skin longer, which is why layering a hydrating serum underneath is effective. Fragrance, linalool and limonene are potential sensitisers for allergy-prone users.
Dermatologist Perspective
Occlusive masks can provide a temporary boost in hydration and a calming, cooling sensation, which many people find helpful for dry or dull-looking skin. Clinicians generally regard them as cosmetic treats rather than treatments, with no long-term effect on skin conditions. Fragrance-free options are usually recommended for sensitive or allergy-prone skin, and peel-off masks should be kept away from the eyes, nostrils and mouth. Patients with active eczema flares or broken skin may prefer to avoid occlusive masks until the skin has healed.
Guidance
Usage & Recommendations
How to Use
After cleansing and applying a hydrating toner or serum, pour the powder into the gel and stir quickly for about thirty seconds until smooth. Spread a thick, even layer over the face with the spatula, avoiding the eyes, eyebrows, nostrils and lips. Relax for fifteen to twenty minutes until it has set, then peel it off from the edges. Rinse any residue and apply moisturiser. Use no more than once a week.
Value Assessment
At about fifteen dollars per single-use set from a US-facing retailer, the modeling pack is expensive per application, even if multipacks elsewhere reduce the cost. You are paying mainly for convenience and a pleasant, spa-like hydrating experience rather than for active ingredients, since the hyaluronic acids are present at tiny levels. For an occasional treat, the value is acceptable; for regular use, a tub of powder modeling mask or a hydrating sheet mask offers more for less.
Who Should Buy
People with dry, dehydrated or dull skin who enjoy an occasional spa-style rubber mask and want a convenient version that needs no water or measuring.
Who Should Skip
Those sensitive to fragrance, anyone looking for a regular, budget-friendly hydration step, and people expecting high-strength hyaluronic acid.
Ready to try Dermatory Hyal Shot Barrier Ampoule Gel Modeling Pack B5?
Buy at Amazon ♥ Details
Product Details
Texture
A blue gel that thickens when mixed with the powder and sets into a flexible rubber sheet.
Scent
A light added fragrance during application.
Packaging
A single-use set of 60 g gel and 6 g powder in a blue box; multipacks are also sold.
dewynatural
What to Expect on First Use
The mixture feels cool as it sets. After peeling, skin looks plumper and feels deeply hydrated. Sensitive skin may react to the fragrance.
How Long It Lasts
One application per set.
Best Season
All Year
Background
The Story Behind This Product
The modeling pack joined Dermatory's Hyal Shot Barrier B5 hydration line as a simpler, spa-style rubber mask for home use.
About Dermatory Established Brand (5–20 years)
Dermatory, founded in Korea in 2018, markets hypoallergenic dermo-cosmetics for sensitive skin. Independent clinical studies of its masks and treatments have not been published.
Brand founded: 2018
Myth vs. Reality
Common Myths
Myth
Eight types of hyaluronic acid make this mask intensely hydrating.
Reality
The label declares them at 20 ppm or less. The hydration comes mainly from glycerin and sugars held against the skin by the occlusive mask.
Myth
Modeling masks detoxify or pull impurities out of the skin.
Reality
Alginate masks work by occlusion and cooling, trapping moisture rather than drawing anything out.
FAQ
Frequently Asked Questions
How do you use the Dermatory Hyal Shot Barrier Modeling Pack?
Mix the powder into the gel, stir for about thirty seconds, spread thickly over the face avoiding eyes and lips, wait 15 to 20 minutes, then peel it off.
Does the Dermatory modeling pack need water?
No. The gel replaces water, so you only combine the gel and powder.
How much hyaluronic acid is in the Dermatory modeling pack?
The highest form is declared at 20 ppm, and the others at parts-per-billion levels, so the hyaluronic acid content is very low.
Is the Dermatory Hyal Shot Barrier Modeling Pack fragrance-free?
No. The gel contains fragrance, linalool and limonene.
How often should I use the Dermatory modeling pack?
Once a week or less, as an occasional hydrating treatment.
Can I put serum under the Dermatory modeling mask?
Yes. A hydrating serum underneath is enhanced by the mask's occlusive seal.
Reviews
What Reviewers Tend to Say
Recurring themes our editors read across retailer reviews of this product — summaries in our words, not quotations, and not a substitute for your own patch test.
Easy no-water mixing
Peels off in one piece
Skin feels hydrated and cool
Expensive per use
Contains fragrance
Messy if applied too thin