REJURAN Biome Healer Youth Formula Ampoule

What is this product?

Rejuran's Biome Healer Youth Formula Ampoule, 30ml, suits skin that wants an emollient serum with a real bacterial ferment block and no declared fragrance, and it is the wrong pick for anyone managing malassezia-driven breakouts, because caprylic/capric triglyceride, olive oil and shea butter all sit in its top twenty. Four bacterial ferments run consecutively from tenth to thirteenth of 38 ingredients, which is high placement, but Rejuran publishes no amount, no strain count and no pH.

What makes it different?

It is unusual for an ampoule in two directions at once. The ferment block is the first: four microbiome-derived entries running back to back at positions ten to thirteen is far more than the single ferment token most serums carry, and it comes with ceramide NP, beta-glucan and panthenol behind it. The second is texture load. Squalane sits fourth, olive oil eighth and shea butter eighteenth, so this behaves much closer to a light emulsion than to the watery ampoule the format usually implies, and skin that breaks out on fatty esters should read the list before buying. Its 38-entry statement carries no fragrance, no essential oil and no denatured alcohol, which is what makes the fragrance-free case here a fact off the list rather than a brand promise.

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.

Key ingredient

• Water
• Glycerin
• Caprylic/Capric Triglyceride
• Squalane
• 1,2-Hexanediol
• Behenyl Alcohol
• Niacinamide
• Olea Europaea (Olive) Fruit Oil
• Polyglyceryl-3 Methylglucose Distearate
• Cutibacterium Acnes Ferment Filtrate
• Streptococcus Thermophilus Ferment
• Staphylococcus Epidermidis Ferment Filtrate
• Enhydrobacter Aerosaccus Ferment Extract Filtrate
• Hydrolyzed DNA
• Beta-Glucan
• Tocopherol
• Ceramide NP
• Butyrospermum Parkii (Shea) Butter
• Chondrus Crispus Extract
• Xylitylglucoside
• Chlorella Vulgaris Extract
• Saccharum Officinarum (Sugarcane) Extract
• Xylitol
• Butylene Glycol
• Hydrogenated Lecithin
• Ammonium Acryloyldimethyltaurate/VP Copolymer
• Panthenol
• Glucose
• Anhydroxylitol
• Fructooligosaccharides
• Fructose
• Ethylhexylglycerin
• Adenosine
• Sodium Phytate
• Dipropylene Glycol
• Pentylene Glycol
• Choleth-24
• Cetearyl Alcohol

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: 카프릴릭/카프릭트라이글리세라이드, 올리브오일, 폴리글리세릴-3메틸글루코오스다이스테아레이트, 시어버터, 하이드로제네이티드레시틴, 콜레스-24

Did the ad claims hold up?

We checked 3 lines this product advertises against the ingredient list and public documents. None of them hold up on their own. They are partly right at best.

Claims translated from Korean, originals preserved.

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