What is Trehalose?
Humectant
Trehalose is a humectant that draws water into the skin and helps hold it there.
This ingredient is listed in CosIng, the EU's cosmetic ingredient database. CosIng lists what it's used for as: Humectant, Moisturising.
CosIng function classes are the EU's standard list of the jobs an ingredient does inside a product, such as moisturizing, emulsifying, or preserving.
Which products feature it?
25 of the 2320 products we've checked feature this as a key ingredient. Products that disclose a concentration or list it near the top of the ingredient list come first.
Showing 1 to 12.

퓨로피엘
마이크로핏 액티브 톤업패치 (Korean)This brand publishes no English name for this product. The name above is as printed in Korean.
Key: Trehalose (#2 on the ingredient list), Niacinamide, Adenosine
16 claims, summarized
- Don't count on:
- better hydration
See each claim
claims, checked
1) Tear open the individual packaging and take out one product at a time. 2) Attach to the desired area and press gently for 5 seconds. 3) Remove the patch after at least 4~10 hours.
backed by evidence* Limited to the characteristics of the raw material.
backed by evidence280μm uniform height
plausible, not tested4.5kgf high compressive strength
plausible, not testedThe key is precisely from 'spacing, not quantity'.
plausible, not testedClean region Jeonnam Goheung yuja extract 5,000ppm
partly backed920 high-quality microdots
partly backedLighten dark spots, brighten skin tone / Natural vita energy infused into the skin / Vita C Microfit Active Tone-up Patch
partly backedGoheung yuja, grown in the clean natural environment of Goheung, the best yuja-producing region, has 3 times higher vitamin content than lemon, helping with blemish improvement and whitening care.
overstatedThe polyphenols and minerals in fig extract, a naturally derived moisturizing ingredient, help care for smooth and radiant skin texture.
no supporting source found800μm optimal spacing
no supporting source foundPyuropiel's proprietary method that enhances absorption with high strength and precise spacing design.
no supporting source foundPyuropiel, a high-quality/functional cosmetics brand incorporating Medical Grade manufacturing/quality control know-how.
no supporting source foundPyuropiel | Vita C Microfit Active Tone-up Patch. Complete a clear and radiant skin tone with the vitality of vitamins. A tone-up solution that adheres without lifting with a microfit sheet for easy care anytime, anywhere. Add a glowing mood to your daily life with an MD-curated item.
nothing specific to checkThrough daily care, not a temporary improvement, but an experience of skin becoming clear on its own. We develop perfect and gentle skincare by meticulously incorporating pure natural ingredients and rigorous, scientific expertise.
nothing specific to checkVita C patch, tone-up patch, microfit, skin vitality, vitamin care, daily home care, adherence patch, Pyuropiel recommendation
nothing specific to check
Key: Trehalose (#6 on the ingredient list), Panthenol, Hyaluronic Acid
1 claim checked
claims, checked
A cleansing water that thoroughly cleanses even fine dust based on a mild cleansing ingredient extracted from olive oil.
partly backed

Cell Fusion C
Weakly Acidic Pharrier Cleansing Water
Key: Trehalose (#6 on the ingredient list), Polyglyceryl-4 Caprate, Melissa Officinalis (Lemon Balm) Leaf Extract
5 claims, summarized
- Only partly backed:
- better barrier support
See each claim
claims, checked
Weakly acidic barrier care even after cleansing
plausible, not testedMoist skin texture with no tightness even after washing
plausible, not tested#LowIrritation #NoEyeSting
plausible, not testedA reassuring cleansing water that protects a healthy pH and leaves moisture in full
plausible, not testedLow irritation, reassuring cleansing with over 96% skincare ingredients
no supporting source found

Torriden
DIVE IN Soothing Cream
It's made for calmer skin and better hydration.
Key: Trehalose (#7 on the ingredient list), Hyaluronic Acid, Panthenol
14 claims, summarized
- Only partly backed:
- better hydration · calmer skin
See each claim
claims, checked
A low-irritation soothing gel cream that helps cool and moisturize the face with 5D low-molecular hyaluronic acid.
plausible, not testedSoothing: Calms and helps comfort irritated skin
plausible, not tested30.85% improved skin water content (6)
plausible, not testedCooling: Instantly cools and soothes overheated skin
partly backedSoothes visible redness: Instantly soothes skin redness caused by heat and irritation
partly backedGentle Formula: Suitable even for sensitive skin
partly backedThe human repeat insult patch test(Non-irritant)(1)
partly backed15.55% improved deep skin hydration (internal hydration (2)
partly backed3.46°C reduces immediate skin temperature (cooling)(3)
partly backed101.84% improved temporary redness caused by infrared (heat) irritation. (4) improving
partly backed145.02% improved immediate moisturizing of the skin (5)
partly backed100% agreed feels gentle/moisture/stickyness on the skin.(8)
partly backedHydration Boost: Replenishes surface and inner layers of skin with layered hydration and a fresh, dewy finish
overstated109.77% improved soothing the skin from external irritation(physical).(7)
no supporting source found
Key: Trehalose (#8 on the ingredient list), Aloe Barbadensis Leaf Water, Glycerin

GRAYMELIN
Cabbage Sleeping Pack
It's made for calmer skin and better hydration.
Key: Trehalose (#8 on the ingredient list), Brassica Oleracea Capitata (Cabbage) Leaf Water 65%, Brassica Oleracea Capitata (Cabbage) Leaf Extract
15 claims, summarized
- Only partly backed:
- better hydration · calmer skin · less shine
- Don't count on:
- less visible pores · a smoother skin texture
See each claim
claims, checked
Daily use suggestion - A daily soothing cream alternative that holds only moisture without stickiness, allowing a light and moist application every day like a cream
backed by evidenceHOW TO USE Instructions - Guide on applying to the entire face and absorbing overnight as a sleeping pack, and spreading on as a soothing cream at the last step of skincare
backed by evidenceClear moisture glow overnight
plausible, not testedJust apply and sleep, all-night moisture recharge. A non-sticky sleeping pack that soothes sensitive skin with cabbage extract and fills it with clear vitality.
partly backedFor irritated skin that easily reddens and becomes sensitive due to external stimuli and harmful environments, and for concerns of excessive sebum secretion, this large-capacity sleeping pack contains 65% nutrient-rich cabbage leaf water to cool down skin heat overnight and build a firm moisture barrier.
partly backedThe bouncy, transparent gel cream texture adheres refreshingly without stuffiness and absorbs without needing to be washed off, helping provide intensive cooling and soothing care while you sleep.
partly backedIt can be used in multiple ways, not only as a sleeping pack 2-3 times a week but also as a daily soothing cream applied lightly every day, and with its gentle, low-irritation formula, even sensitive skin can safely achieve a smooth skin texture.
partly backedCabbage sleeping pack key features - Description of a moisture soothing pack containing 65% cabbage leaf water, rich in vitamins and dietary fiber to soothe irritated skin
partly backedSkin concern solution - 4 key points: soothing irritated skin, controlling excessive sebum, skin heat DOWN, and intensive moisture protection care
partly backedPOINT 1 Cabbage leaf water 65% - Ingredients from nature such as mineral-rich cabbage, broccoli, radish seed, and perilla leaves give vitality to rough skin
partly backedPOINT 2 Soothing care effect - Illustration of the principle of calming skin irritated by skin heat and controlling excessive sebum secretion
partly backedProduct formulation and keywords - Depiction of a moist gel texture providing rich moisture and pore cooling effect, and a non-sticky soothing cream formulation
partly backedRecommended target checklist - Suggested for skin stinging and itching, soothing redness from external stimuli, cooling soothing, and when concerned about excessive sebum and dryness
partly backedCabbage ingredients rich in vitamins A, B, C, and U and dietary fiber gently manage dead skin cells and sebum inside pores, while low-molecular-weight sodium hyaluronate adds non-sticky, moist moisture retention.
overstatedPOINT 3 Moisture power with no gap for dryness - Explanation of moisture retention of low-molecular-weight sodium hyaluronate and verification of antioxidant moisturizing power through a comparative test of apple browning
no supporting source found
It's made for better hydration and less visible pores.
Key: Trehalose (#8 on the ingredient list), Silica, Centella Asiatica Extract
24 claims, summarized
- You can expect:
- better hydration
- Only partly backed:
- less visible pores · less shine · calmer skin (amount unknown) · firmer skin
See each claim
claims, checked
Oily combination skin / moisture-deficient oily skin
backed by evidenceExcess sebum becomes the cause of various skin concerns.
plausible, not testedSebum that cannot be expelled becomes blackheads- if pores are clogged, it becomes red, blotchy skin concerns- it can enlarge pores and ruin skin texture.
plausible, not testedBecause even oily skin needs moisture, keep it hydrated with desert resurrection plant power.
plausible, not testedMoisture soothing Naturo JC, essential for oily skin too.
plausible, not testedFast absorption without shine, so even moisture-deficient oily combination skin is OK!
plausible, not testedA refreshing type lotion that helps with sebum care and pore control for oily skin, providing non-drying moisture and a light application feel at the same time.
partly backedTiresome shine - just one use, immediate sebum reduction effect1)
partly backedThe desert resurrection plant trehalose ingredient, which comes back to life when watered even after 50 years of dryness, helps form a moisture barrier on parched skin.
partly backedFive plant ingredients, including centella asiatica extract, help relieve skin irritation and soothe, comforting sensitive skin.
partly backedTest for sebum cut by oil absorption / P&K Skin Clinical Research Center㈜ / 2022.12.22~12.23
partly backedHas sebum control and pore tightening effects, moisture feel is not inferior, but if you have dry skin, we recommend Excellent Lotion with better moisturizing power. If you have redness or sensitive skin, we recommend Sensitive Lotion. ※ Regardless of skin type, for those who want a refreshing feel in hot seasons, or those with a skincare routine that finishes with cream or oil, it is recommended as an intermediate step.
partly backedIn the case of the BR pore line, it manages sebum and dead skin care while also caring for skin elasticity with wrinkle-improving functionality to prevent pores from sagging. / In the case of Refreshing Lotion, it cares for pore expansion caused by excessive sebum secretion through sebum control.
partly backedRestore your oil-moisture balance with Refreshing Lotion and break free from sebum worries!
overstatedThe key to proper sebum care is making sure the skin doesn't feel dry on its own! That's why Refreshing Lotion contains only plant-derived moisture that skin loves.
overstatedZero stickiness! You can also use it with Excellent Lotion depending on the season and skin condition.
overstatedAll skin types (sensitive skin can also use)
overstatedAdded (plant-fermented ethanol) // Not added to Excellent Lotion and Sensitive Lotion // As a lotion suitable for summer use, alcohol is added for a refreshing and cool sensation // The alcohol used in Isoi products is a plant-fermented ingredient, so you can use it with confidence.
overstatedWe asked those who have used it, sebum improvement satisfaction 100%2)
no supporting source foundWorried about excess sebum? A refreshing lotion that's kind down to its ingredients.
nothing specific to checkProper sebum control ingredients from the start!
nothing specific to checkWith just Refreshing Lotion and Excellent Lotion, you're set for all four seasons!
nothing specific to checkRight now, you need Refreshing Lotion!
nothing specific to checkRefreshingly recharge moisture.
nothing specific to check
It's registered in Korea as a functional cosmetic for brightening and wrinkle improvement.
Key: Trehalose (#9 on the ingredient list), Anastatica Hierochuntica Extract, Adenosine
14 claims, summarized
- You can expect:
- less visible dark spots · softer-looking fine lines
- Only partly backed:
- firmer skin
- Don't count on:
- better hydration
- Tests passed:
- skin irritation
See each claim
claims, checked
Dual functional: wrinkle improvement and whitening
backed by evidenceLong and sturdy built-in tweezers for hygienic and convenient use
plausible, not testedDouble packaging with label/cap keeps it moist to the very last sheet.
plausible, not testedOuter firmness improved 8.66%, inner firmness improved 7.80%
partly backedAfter 1 minute of use, firmness improves
partly backedHyaluronic acid, peptides, adenosine
partly backedThis generous 350ml firming essence, packed with firming ingredients, is filled to the very last sheet.
partly backedSensitive skin irritation test completed
partly backedWith a large 30-sheet capacity, try a mask pack that never dries out even to the last sheet to keep your 1 pack per day routine.
partly backedThe 3-layer system stacks moisture not only for skin firmness but deep into the skin, layer by layer.
overstatedTry this gentler and safer care with a vegan sheet made with water instead of chemical adhesives, free from skin irritation.
overstatedMeet a 1 pack per day firming care that is non-irritating even with daily use.
overstatedWith the firming care of resurrection plant extract and trehalose, it builds sagging skin firm and tight.
no supporting source foundWith a 0.3mm ultra-slim fabric, it offers excellent breathability, feels light and comfortable during use, and effectively delivers active ingredients.
no supporting source found

Ttingko
Niacinamide Toner
Key: Trehalose (#9 on the ingredient list), Niacinamide, Hyaluronic Acid
2 claims checked
claims, checked
Fragrance
backed by evidenceNiacinamide Toner
partly backed
Key: Trehalose (#10 on the ingredient list), Panthenol, Allantoin
1 claim checked
claims, checked
A vegan certified formula containing Peucedanum extract grown on clean, natural Ulleungdo, 2 types of hyaluronic acid, etc., cleanses the skin and keeps it moist, a water type toner
partly backed

Torriden
DIVE IN Toner
It's made for better hydration.
Key: Trehalose (#10 on the ingredient list), Hyaluronic Acid, Panthenol
11 claims, summarized
- Only partly backed:
- better hydration
- Don't count on:
- less shine
See each claim
claims, checked
Hydration
backed by evidenceFresh Finish
plausible, not testedThe human repeat insult patch test(Non-irritant)(1)
partly backed112.5% improved internal hydration (moisture in the lower stratum corneum) (3)
partly backed100% agreed feels gentle/moisture/refreshing on the skin.(5)
partly backedGentle Formula
partly backed5D Hyaluronic Acid: Hydrates from surface to deep layers with five molecular sizes
overstated13.24% improved skin smoothness (2)
no supporting source found*80.76% Immediate reduction in sebum (oil) (4)
no supporting source foundTexture Refinement
no supporting source foundOil Control
no supporting source found

numbuzin
No.3 Pore Zero Makeup Grip Pad
Key: Trehalose (#10 on the ingredient list), Bifida Ferment Lysate, Galactomyces Ferment Filtrate
3 claims checked
claims, checked
1) After cleansing, avoiding the eye area, wipe along the skin texture from the inside to the outside.
backed by evidence2) After use, close the lid tightly and store to keep the pads from drying out.
backed by evidence3) If intensive care is needed, avoid the eye area, adhere well to the skin, and apply as a pack for about 3 minutes.
plausible, not tested
Often featured alongside it
Are the claims about it backed up?
We checked each claim that features this ingredient. Open the list below to see the result for each one.
See the results by claim
| Result | Claims |
|---|---|
| plausible, not tested | 2 of 7 |
| partly backed | 2 of 7 |
| overstated | 1 of 7 |
| no supporting source found | 2 of 7 |
These are counts of claims, not products. One product can name the same ingredient in several claims, and we checked each one on its own.



