numbuzin No.1 Pantothenic B5 Active Soothing Serum

What is this product?

Just do not buy the speed pitch: one marketplace title promises soothing in 7 seconds with no test behind it, and the brand publishes no concentrations, no pH and no clinical data for this product.

What makes it different?

Within numbuzin's numbered lineup this is the No.1 soothing entry, and its unusual angle is running calming and brightening in one formula: two forms of its namesake vitamin B5 (panthenol 7th, pantothenic acid 16th of 55) alongside niacinamide and alpha-arbutin with a whitening functional filing, where sibling No.5 targets post-blemish marks and No.9 targets firmness per the brand's own catalog placement. The trade-off is disclosure: every active is undisclosed in amount, and the one timed claim attached to it (7-second soothing) comes from a marketplace title, not a test.

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
• Butylene Glycol
• Niacinamide
• Glycerin
• Dipropylene Glycol
• 1,2-Hexanediol
• Panthenol
• Sophora Angustifolia Root Extract
• Acrylates/C10-30 Alkyl Acrylate Crosspolymer
• Propanediol
• Diethoxyethyl Succinate
• Tromethamine
• Hydrogenated Lecithin
• Ammonium Acryloyldimethyltaurate/VP Copolymer
• Betaine
• Pantothenic Acid
• Trehalose
• Ethylhexylglycerin
• Glyceryl Oleate
• Sodium Phytate
• Allantoin
• Alpha-Arbutin
• Houttuynia Cordata Extract
• Lauryl Glucoside
• Myristyl Glucoside
• Polyglyceryl-6 Laurate
• Zinc PCA
• Melia Azadirachta Leaf Extract
• Tocopherol
• Glycyrrhiza Uralensis (Licorice) Root Extract
• Melia Azadirachta Flower Extract
• Coccinia Indica Fruit Extract
• Centella Asiatica Extract
• Sodium Hyaluronate
• Citric Acid
• Solanum Melongena (Eggplant) Fruit Extract
• Beta-Glucan
• Ocimum Sanctum Leaf Extract
• Hyaluronic Acid
• Decyl Glucoside
• Curcuma Longa (Turmeric) Root Extract
• Corallina Officinalis Extract
• Dipotassium Glycyrrhizate
• Hydrolyzed Hyaluronic Acid
• Simmondsia Chinensis (Jojoba) Seed Oil
• Camellia Sinensis Leaf Extract
• Centella Asiatica Leaf Extract
• Cladosiphon Okamuranus Extract
• Salix Alba (Willow) Bark Extract
• Sodium Acetylated Hyaluronate
• Coffea Arabica (Coffee) Seed Extract
• Beta-Sitosterol
• Polyglyceryl-10 Stearate
• Citrus Aurantium Bergamia (Bergamot) Leaf Extract
• Pinus Densiflora Leaf Extract

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: Glyceryl Oleate

Did the ad claims hold up?

We checked 4 lines this product advertises against the ingredient list and public documents. One of them holds up. The rest are only partly right or have nothing behind them.

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

What else is worth seeing?

Products we read alongside this one.

• numbuzin No.5 Glutathione C Mark AmpouleAnother product in the same category
• numbuzin No.9 NAD Bio Lifting Concentrate EssenceAnother product in the same category

Which articles cover it?

Articles on this site that write about this product.

• Korean products for the marks a breakout leaves behindMarks are a pigment question, not a blemish question. Four Korean products with their disclosed tone actives, including one whose own directions contradict.