JAYJUN Real Water Brightening Black Hydro Sleeping Pack

What is this product?

An overnight leave-on sleeping pack in single-use 4ml pouches, built as a humectant stack under a thin silicone and acrylate film: glycerin and three glycols in the first five of 51 entries, hydroxyethyl urea and panthenol at 11 and 12, and eight hyaluronic acid forms in an unbroken run at 22 through 29. Nine peptide entries follow, one more than the eight the brand advertises, and adenosine at 49 is the notified anti-wrinkle active behind the product's only registered function. The evidence on the brand's page splits sharply. Its irritation test (32 subjects) and its single-use application test (22 subjects) both name an institution, a period and signed figures; its skin-depth percentages and its Jeju, France and Italy water origins carry no institution, sample size or period at all. Two things to weigh before buying: fragrance is the final declared entry, and the only barrier lipids are ceramide NP and hydrogenated lecithin near the end of the list, so dry or barrier-impaired skin will still want a lipid cream over this. The product name opens with BRIGHTENING in English, while the statutory panel registers anti-wrinkle only.

What makes it different?

Eight hyaluronic acid forms in one consecutive run plus nine peptide entries, in a single-use pouch format that keeps each dose sealed, from a brand whose own irritation and application testing is attributed while its headline percentages are not.

What is in it?

The full ingredient list as the brand publishes it, in the printed order. Each name links to what we know about that ingredient.

This brand publishes its ingredient list in Korean only. Names below are the matching INCI names from the Korean Cosmetic Association ingredient dictionary, except 6 with no dictionary entry, left in Korean.

Key ingredientWorth a closer look

• Water
• Glycerin
• Butylene Glycol
• 1,2-Hexanediol
• Propanediol
• Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
• Dimethicone
• 피이지-40스테아레이트
• Isohexadecane
• Butylene Glycol Dicaprylate/Dicaprate
• Hydroxyethyl Urea
• Panthenol
• Water
• 탄산수
• Sea Water
• Hexyl Laurate
• Polymethylsilsesquioxane
• Stearyl Dimethicone
• 스테아레스-21
• Caprylyl Glycol
• Glyceryl Caprylate
• Sodium Hyaluronate
• Hydroxypropyltrimonium Hyaluronate
• Hydrolyzed Hyaluronic Acid
• Sodium Acetylated Hyaluronate
• Hyaluronic Acid
• Hydrolyzed Sodium Hyaluronate
• Sodium Hyaluronate Crosspolymer
• Potassium Hyaluronate
• Dipeptide Diaminobutyroyl Benzylamide Diacetate
• Palmitoyl Tripeptide-5
• Copper Tripeptide-1
• Acetyl Hexapeptide-8
• Palmitoyl Pentapeptide-4
• Palmitoyl Tripeptide-1
• Palmitoyl Tetrapeptide-7
• 올리고펩타이드-32
• 올리고펩타이드-29
• Sodium Polyacrylate
• 글루타치온
• Polyglutamic Acid
• Macadamia Ternifolia Seed Oil
• Sorbitan Oleate
• Caprylic/Capric Triglyceride
• Ceramide NP
• Hydrogenated Lecithin
• Ethylhexylglycerin
• Polysorbate 80
• Adenosine
• Disodium EDTA
• Fragrance

Ingredients with no mark are ones we found nothing notable about, and when marks overlap on one ingredient we show the caution first.

We could not place these in the list above: Polysorbate 80, Sorbitan Oleate, PEG-40 Stearate, Steareth-21, Glyceryl Caprylate, Caprylic/Capric Triglyceride, Macadamia Ternifolia Seed Oil, Isohexadecane

Did the ad claims hold up?

We checked 12 lines this product advertises against the ingredient list and public documents. 2 of them hold up. The rest are only partly right or have nothing behind them.

Each line is quoted as the brand published it, and each one was read on its own against the ingredient list and the documents the brand publishes.

How we read these lines

What else is worth seeing?

Products we read alongside this one.

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