NUMBUZIN
No.5 Vitamin Concentrated Serum
No.5 Vitamin Concentrated Serum
30 mL
Good to know
- Acne scars
- Arbutin
- Glutathione
- Korean
- Korean skincare
- Niacinamide
- Pigmentation
- Serum
- Tranexamic acid
- Vitamin c
Details
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- Dark spots
- Lightweight texture
- AM + PM
How to usePreferably AM
AM
PM
- After cleansing and toner, apply 2–3 drops to face and neck.
- Gently pat in until absorbed.
- Follow with your moisturiser.
- Use morning and evening; in the morning, always finish with sunscreen.
Who it is suited for
- Dark spots, sun spots and red or brown marks left after pimples.
- Dull, tired-looking or uneven skin tone.
- Normal, oily and combination skin; sensitive skin after a patch test.
Key ingredients
NIACINAMIDE (ABOUT 5%)
Vitamin B3. Supports the skin barrier and helps the skin tone look more even.
TRANEXAMIC ACID (ABOUT 4%)
Helps dark patches and marks look lighter with regular use.
ALPHA-ARBUTIN
A gentle brightening ingredient that helps reduce the look of dark spots.
GLUTATHIONE & VITAMIN C
Antioxidants that help the complexion look brighter and fresher.
PANTHENOL & CERAMIDE NP
Calm the skin and help it hold on to moisture.
INCI
Vaccinium Vitis-Idaea Fruit Extract, Butylene Glycol, Niacinamide, Panthenol, Tranexamic Acid, Water, 1,2-Hexanediol, Neopentyl Glycol Dicaprate, Caprylic/Capric Triglyceride, Sorbitol, Bifida Ferment Lysate, Chondrus Crispus Extract, Butyrospermum Parkii Butter, Saccharum Officinarum Extract, Alpha-Arbutin, Sodium Hyaluronate, Melia Azadirachta Flower Extract, Ocimum Sanctum Leaf Extract, Melia Azadirachta Leaf Extract, Curcuma Longa Root Extract, Corallina Officinalis Extract, Tremella Fuciformis Extract, Pentylene Glycol, Glycerin, 3-O-Ethyl Ascorbic Acid, Bisabolol, Tromethamine, Ethylhexylglycerin, Adenosine, Hydrogenated Lecithin, Allantoin, Glutathione, Ceramide NP, Beta-Glucan, Dipotassium Glycyrrhizate, Tocopherol, Ascorbic Acid, Ascorbyl Glucoside, Tocopheryl Acetate, Hydroxypropyl Cyclodextrin, Ubiquinone, Thioctic Acid, Potassium Hydroxide, Behenyl Alcohol, Carbomer, Xanthan Gum, Disodium EDTA
Ingredient list for the reviewed formula. Formulas can change; check the ingredient list on your packaging, especially if you have an allergy.
Numbuzin No.5 Vitamin Concentrated Serum is a Korean brightening serum for dark spots, post-acne marks and a dull, uneven skin tone. I suggest it if you want one serum that combines several well-known tone-evening ingredients instead of layering three different products.
Its base is lingonberry fruit extract, and it is built around niacinamide, tranexamic acid, alpha-arbutin and glutathione, with stabilised vitamin C (3-O-ethyl ascorbic acid and ascorbyl glucoside), vitamin E, panthenol and a ceramide. Retailers quoting Numbuzin give about 5% niacinamide and 4% tranexamic acid. The texture is light and sinks in quickly, so it fits both morning and evening routines. Its ingredient list contains no fragrance.
🔬 Does tranexamic acid on the skin help with dark patches?
In a randomised study in India, 100 adults with melasma used either a 5% tranexamic acid solution or 3% hydroquinone cream, the classic prescription lightener, for 12 weeks. The melasma score fell by 27% with tranexamic acid and by 26.7% with hydroquinone, so both worked about equally well, and people were more satisfied with tranexamic acid because it caused fewer side effects.1 To be honest, the study was short, only single-blind and tested a 5% solution, not this serum with about 4%. I see tranexamic acid here as a useful, gentle helper for an uneven tone, always together with daily sunscreen, which matters most for pigmentation.
Questions about Numbuzin No.5 Vitamin Concentrated Serum
How long until I see a difference?
Pigment fades slowly. Give it 8 to 12 weeks of daily use. Without sunscreen every morning, new pigment keeps forming and the serum cannot keep up.
Can I use it with retinol?
Yes. Apply this serum first and the retinol afterwards. If your skin is sensitive, use the serum in the morning and retinol in the evening.
Is it suitable for sensitive skin?
Usually yes. It contains no fragrance and no exfoliating acids. With many active ingredients in one bottle, start once a day and test it on a small area first.
To compare, have a look at ANUA Niacinamide 10% + TXA 4% Serum, see my dark spots and pigmentation selection, or all vitamin C products.
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