It is the thin, serum-soaked counterpart to the line's thick hydrogel mask: a gel-coated fabric sheet carrying a panthenol, allantoin and adenosine serum instead of a carrageenan gel. The label is also unusually candid, printing each collagen's dose in parts per million or parts per billion.
A gentle, fragrance-free serum sheet that leaves skin calm, soft and dewy thanks to panthenol, allantoin and a liquorice-derived soother, with adenosine as a small bonus. The collagen on the packet is present at parts per million and parts per billion, which the brand itself prints. At about $5 a sheet it is a pleasant comfort mask, but not a firming or pore treatment.
This mask reached retailers in 2026 and has a single rating on YesStyle, so there is no meaningful user record of how it performs. The assessment is therefore based on the published ingredient list, including the collagen doses printed on it, and on how simple soothing serum masks behave, rather than on real-world feedback.
The case for it
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 →
The studies behind the evidence row
The case for it
What would change this: A researched evidence row for the lead active would replace this with a verdict.
Same rule for everyone. “Supporting role” is the verdict on 8,197 of 45,024 concern verdicts across the catalog; rule R8 decided 4,250 of them. As of September 25, 2026, engine 5.1.1.
Brand or formulator? Disclose a concentration or correct a fact →
Also listed for Compromised Skin Barrier — the actives here (Panthenol (Vitamin B5) are in our research queue for that concern; there is no verdict until their evidence rows are written. That is a gap in our table, not a mark against the product.
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
Every ingredient list tells a story in order, and this one tells it with unusual candour. On the retailer listing for the Collagen Remodeling Serum Mask, each form of collagen carries its dose in brackets. Collagen and collagen extract: 0.04 parts per million. Soluble collagen: 0.02. Hydrolysed collagen, near the end: 0.01 parts per billion. Collagen amino acids, the last ingredient: 0.000001 parts per billion. Those numbers are a regulatory disclosure rather than a boast, and they settle the question of what this sheet mask is. It is not a collagen treatment. It is a soothing, hydrating serum mask, and read that way, it is a good one.
The useful ingredients cluster at the top. After water, methylpropanediol, glycerin and butylene glycol comes panthenol, sixth on the list, followed by allantoin at ninth and adenosine at fourteenth. That is a meaningful order. Panthenol is provitamin B5, a well-studied humectant that supports the skin barrier and reduces the tight, irritated feel of dry or stressed skin. Allantoin is a classic soothing agent, and dipotassium glycyrrhizate, a liquorice derivative a little further down, adds anti-redness support. Betaine, trehalose and sodium hyaluronate round out the hydration. Placed on the face for fifteen minutes under a sheet that slows evaporation, this is exactly the kind of formula that leaves skin calmer, softer and plumper when the mask comes off.
Adenosine is the one active with a claim beyond comfort. It is recognised in Korea as an anti-wrinkle functional ingredient, and it appears early here compared with the rest of the line's showcase actives. A mask used once or twice a week, however, delivers only a small fraction of the exposure that daily leave-on products give, so its contribution to fine lines will be modest at best.
The Probioderm signature is present too, with lactobacillus ferment and prebiotic sugars, as are ceramide NP and cholesterol near the end of the list. They fit the barrier-support story, though at their positions they are unlikely to change much on their own. The peptides, dipeptide-15 and acetyl hexapeptide-1, are similarly placed well down the list.
The sheet itself is thin and gel-coated, designed to cling to the face better than plain fabric. That matters more than it sounds: a mask that stays in contact with the skin, including around the nose and chin, delivers its serum evenly and does not slide off when someone moves or talks. The brand's instructions suggest ten to twenty minutes, and that is the right window; left on until dry, a sheet mask can pull moisture back from the skin rather than giving it.
For readers comparing it with the line's better-known Serum Gel Mask, the difference is format. The gel mask is a thick, cushiony hydrogel of carrageenan and carob gum worn for up to 45 minutes, more occlusive and more of an event. This serum mask is quicker, lighter and runnier, better suited to a weekday morning before makeup or a short evening treatment. Neither contains collagen in a quantity that matters. Where the serum mask does have an edge is on skin that dislikes weight: the thinner sheet and runnier serum leave less residue, and there is none of the rubbery peel-off of a hydrogel, which makes it easier to fit into a morning routine. It also layers better under makeup, since the finish settles to a soft dewiness rather than a tacky film once the leftover serum has been patted in.
The brand claims a significant improvement in pore area after four weeks of use, based on its own testing. That claim has not been published, and it is hard to see which ingredient in this formula would drive it, given that the pore-focused actives in the rest of the line, such as niacinamide and mild acids, are absent here. Hydrated skin looks smoother and pores less prominent for a few hours after any good sheet mask, which is the likeliest explanation.
The formula has no added fragrance, no essential oils, no acids and no alcohol, which makes it one of the gentlest products in the Probioderm range and a reasonable choice for sensitive skin. The polyglyceryl esters and lecithin mean it is not strictly suited to people avoiding fatty-acid esters for fungal acne, though the amounts are small.
At about $5 for a single sheet from US retailers, the price is typical for a Korean branded mask, neither a bargain nor extravagant. Availability is the bigger problem: it is a 2026 launch, stock outside Korea is patchy, and it has almost no English-language reviews yet, so there is little independent evidence of how people find it over time.
Bioheal BOH is Olive Young's own brand, relaunched in 2021 and very popular in Korea, but this particular mask is new and untested beyond the brand's own claims. The honest summary is that it is a calm, hydrating, fragrance-free sheet mask that happens to have collagen in its name. For tight, dry or irritated skin that wants a quick reset, it does that job well. For firmer skin or smaller pores, the numbers in brackets say to look elsewhere.
The hero actives that drive this product's performance.
| Ingredient | Function | Evidence |
|---|---|---|
| Panthenol | Sixth on the list, directly after the glycols and preservative booster, and the most substantial active in this sheet; soaked into the skin for fifteen minutes under the mask it delivers a real dose of humectant, barrier-calming provitamin B5. | Established mechanism for Dehydration · established mechanism |
| Allantoin | Ninth, just after the carbomer that thickens the serum, and paired with panthenol as the mask's soothing core; it is the reason the sheet suits skin that is tight or irritated after sun or travel. | Not yet assessed |
| Adenosine | Fourteenth, a notably early position for a line whose other actives trail far behind, and the ingredient behind the Korean anti-wrinkle claim; in an occasional mask it adds only a small contribution to fine-line care. | Not yet assessed |
| Dipotassium Glycyrrhizate | A liquorice-derived anti-redness agent placed after betaine, reinforcing the calming effect of panthenol and allantoin so the mask reads as a soothing rather than a firming treatment. | Not yet assessed |
| Collagen, Collagen Extract and Soluble Collagen (0.04, 0.04 and 0.02 ppm (declared by the brand)) | The named ingredient, at the parts-per-million levels the retailer listing prints beside each one, with hydrolysed collagen at 0.01 parts per billion further down; at those doses the four collagens are present in name only. | Not yet assessed |
Ingredient standings describe the active at treatment-level doses and vehicles; this product's own condition grades weigh its actual formula.
Water, Methylpropanediol, Glycerin, Butylene Glycol, Hydroxyacetophenone, Panthenol, Carbomer, Propanediol, Allantoin, Tromethamine, Polyglyceryl-10 Isostearate, Caprylyl Glycol, Ethylhexylglycerin, Adenosine, Xanthan Gum, Polyglyceryl-10 Oleate, Sodium Phytate, 1,2-Hexanediol, Sodium Hyaluronate, Betaine, Dipotassium Glycyrrhizate, Trehalose, Cyanocobalamin, Vincetoxicum Atratum Extract, Lactobacillus Ferment, Althaea Rosea Flower Extract, Tocopherol, Collagen, Collagen Extract, Arginine, Soluble Collagen, Dipeptide-15, Dipropylene Glycol, Fructooligosaccharides, Hydrolyzed Hyaluronic Acid, Hydrolyzed Glycosaminoglycans, Pentylene Glycol, Beta-Glucan, Fructan, Hydrogenated Lecithin, Cholesterol, Hydrolyzed Collagen, Inulin, Ceramide NP, Hydrolyzed Elastin, Acetyl Hexapeptide-1, Collagen Amino Acids
treatment
AM & PM
After cleansing and toner, left on for ten to twenty minutes; pat the leftover serum in, then follow with the usual serum and a moisturiser to hold the hydration in place.
Straight after removal: skin feels softer, calmer and plumper, with a dewy finish that lasts several hours and gives makeup a smoother base. Used once or twice a week, the benefit is cumulative comfort rather than visible change; the brand's four-week pore result is its own and unpublished.
The measurable effect of this mask comes from hydration and soothing agents delivered under occlusion. A sheet mask slows evaporation from the skin's surface for the duration of wear, which increases the water content of the stratum corneum and helps humectants such as glycerin, betaine, trehalose and sodium hyaluronate draw water in. Hydrated corneocytes lie flatter, so skin looks smoother and more even, and fine lines from dehydration temporarily soften. Because this depends on water content, the effect fades over hours unless a moisturiser follows.
Panthenol, which is converted in the skin to pantothenic acid, has good evidence for improving barrier function and reducing transepidermal water loss, and it is widely used to calm irritated or dry skin. Allantoin and dipotassium glycyrrhizate are established soothing agents; the latter has anti-inflammatory activity in laboratory studies and is used to reduce redness. Their early positions in this list suggest they are present at useful levels.
Adenosine is one of the ingredients recognised by Korea's Ministry of Food and Drug Safety for anti-wrinkle functional cosmetics, with modest improvements in fine lines shown over weeks of daily application. In a mask used occasionally, its cumulative exposure is much lower.
The collagens are the ingredient the name promotes and the one the evidence supports least. Intact collagen is a large protein that cannot penetrate the skin, and the declared amounts in this mask, from 0.04 parts per million down to fractions of a part per billion, are far below any level that could act even as a film-former. Ceramide NP and cholesterol are barrier lipids, but placed near the end of the list they are likely present at low concentrations.
Sheet masks are generally regarded in clinical practice as a low-risk way to provide short-term hydration and comfort, rather than as treatments. A formula built around panthenol, allantoin and a liquorice derivative, without fragrance or acids, is the type often considered suitable for sensitive or temporarily irritated skin, for example after sun exposure or during retinoid use. Dermatologists commonly advise removing sheet masks before they dry and sealing the skin with a moisturiser afterwards. Claims that topical collagen firms the skin or shrinks pores are usually viewed sceptically, and for enlarged-looking pores, sunscreen, retinoids and salicylic acid have far better evidence.
After cleansing and toner, open the sachet and unfold the sheet, removing any protective film. Align the eye and mouth openings and smooth the sheet over the face, pressing it into the contours around the nose and chin. Leave it on for ten to twenty minutes, removing it before it starts to dry. Pat the remaining serum into the face and neck until absorbed, and use any extra in the sachet on the neck or hands. Follow with serum and moisturiser, and in the morning, sunscreen. Use once or twice a week, or as needed.
At about $5 per 28 g sheet from US-facing Korean retailers, the Serum Mask is priced like most branded Korean sheet masks. For that, it delivers a gentle, fragrance-free soothing and hydration treatment that works well for its purpose. It does not deliver collagen, which the listing itself declares in parts per million and billion, or proven pore benefits. As a new product from an emerging, retailer-owned brand with almost no independent feedback, it is fairly priced as an occasional comfort mask, but single sheets add up quickly for anyone wanting to use it several times a week.
Anyone with dry, tight or sensitive skin who wants a quick, gentle, fragrance-free sheet mask to calm and hydrate before makeup or after a long day. It is also a good option during retinoid use, when skin often needs extra soothing.
People buying it for collagen, firming or smaller pores, since the collagen doses are negligible and the pore claim is unpublished. Those who want a longer, more occlusive treatment may prefer a hydrogel mask, and anyone on a budget may find single sheets poor value for regular use.
Ready to try Bioheal BOH Probioderm Collagen Remodeling Serum Mask?
Buy at Amazon ♥A thin, softly gelled sheet saturated with a clear, lightly thickened serum that feels cool and slippery and dries down without stickiness once patted in.
No added fragrance; any smell is faint and neutral.
A single-use lilac foil sachet, 28 g, printed with the Probioderm serum bottle, holding one folded face sheet.
The sheet unfolds easily and clings to the contours of the face thanks to its gel coating, with enough serum left in the sachet for the neck. After fifteen minutes the skin feels cool, soft and calmer, and there is no tingle; the dewy finish sits well under makeup once the residue has been patted in.
Single use.
All Year
Olive Young's Collagen Remodeling line built its mask reputation on a cushiony hydrogel sheet. In 2026 it added this lighter serum mask, packaged to echo the line's serum bottle, for shoppers who want a quicker, thinner sheet mask in the same range.
Bioheal BOH is Olive Young's house skincare brand, relaunched under that name in 2021, and its Probioderm collagen range already includes a bestselling hydrogel mask. This thinner, serum-soaked sheet is a 2026 addition whose four-week pore claim comes from the brand's own unpublished test.
A collagen sheet mask adds collagen to the skin.
The collagens in this mask are declared at between 0.04 parts per million and 0.01 parts per billion, and even at far higher doses collagen cannot penetrate intact skin. The softness after use comes from panthenol, glycerin and the occlusive sheet.
The longer a sheet mask stays on, the better it works.
Once the sheet starts to dry, it can draw moisture back out of the skin. Ten to twenty minutes, as the instructions say, captures the hydration benefit; overnight use is not recommended for this type of mask.
The Serum Gel Mask is a thick, cushiony hydrogel worn for up to 45 minutes; the Serum Mask is a thinner, gel-coated fabric sheet soaked in a runnier panthenol and adenosine serum and worn for ten to twenty minutes. The serum mask is quicker and lighter, the gel mask more occlusive.
Ten to twenty minutes, per the brand's instructions. Leaving it on until the sheet dries out can pull moisture back from the skin, so remove it while it is still damp and pat the remaining serum in.
It is one of the gentler options in the range: there is no added fragrance or essential oil, and panthenol, allantoin and dipotassium glycyrrhizate are all soothing. As with any sheet mask, a quick test on the jaw is sensible for very reactive skin.
The retailer listing prints the doses: 0.04 ppm for collagen and collagen extract, 0.02 ppm for soluble collagen and 0.01 ppb for hydrolysed collagen. Those amounts are too small to matter, which is why the mask is better understood as a soothing, hydrating sheet.
Yes, the formula is gentle enough, but most people find once or twice a week enough, or before a special occasion. Daily use is more about comfort than extra results.
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.
Sheet adheres closely and does not slip
Skin feels calm and soft afterwards
Hard to find in stock
No lasting firming effect