Description
What it is
numbuzin organizes its range by numbers, and the No.3 line is all about fermentation and a soft, smooth skin texture. The No.3 Skin Softening Serum is the line’s serum step: a 50 ml bottle whose first two ingredients are bifida ferment lysate and galactomyces ferment filtrate, two well-known ferments in Korean skincare. They are joined by niacinamide, squalane, sodium hyaluronate, panthenol and adenosine.
The brand presents it as a serum that hydrates deeply, helps skin feel softer and more elastic, and supports a brighter, more radiant look, with added care for the look of fine lines. The texture is a light, slightly milky emulsion that spreads easily and leaves a soft, moist finish rather than an oily one.
Key ingredients
- Bifida Ferment Lysate: a probiotic-derived ferment that leads the formula, used to support a resilient, comfortable skin barrier.
- Galactomyces Ferment Filtrate: a yeast ferment associated with hydration, smoother texture and a more radiant tone.
- Niacinamide: vitamin B3, used for a brighter, more even-looking complexion and barrier support.
- Squalane: a light, stable emollient that softens the skin and limits moisture loss.
- Sodium Hyaluronate and Panthenol: humectants that draw in water and comfort dry areas.
- Adenosine: commonly included in Korean formulas for the look of smoother, less lined skin.
Product details
| Brand | numbuzin (South Korea) |
|---|---|
| Line | No.3 line (fermentation, softness) |
| Size | 50 ml |
| Format | Emulsion-style serum |
| Main concerns | Rough texture, dehydration, dullness, early fine lines |
| Skin types | Most skin types, especially normal, dry and dehydrated skin |
| When to use | Morning and evening, after toner |
| Fragrance | No added fragrance on the published ingredient list |
| Amazon ASIN | B0GBW9SPCX |
How to use
- Cleanse and apply a toner.
- Take one or two pumps or drops of serum.
- Spread over the whole face and pat gently until absorbed.
- Finish with moisturizer, and sunscreen in the morning.
Tip: on dry days, pressing a second thin layer onto the cheeks gives extra softness without the weight of a heavier cream.
Who it suits
This serum suits people whose skin feels rough, tight or dull and who like the idea of fermented ingredients without strong actives. It also works as a gentle hydrating serum for dry or dehydrated combination skin. For dry-skin routines, see our guide to the best Korean skincare for dry skin. It pairs naturally with numbuzin No.3 Super Glowing Essence Toner from the same line.
Who should be careful
The formula contains goat milk extract and silk extract, so it is not vegan and may not suit people who avoid animal-derived ingredients or have a milk protein allergy. Some people prone to fungal acne avoid yeast ferments such as galactomyces. Anyone who reacts to niacinamide with flushing should introduce it slowly.
Patch test first. Apply a small amount to the inner forearm or behind the ear and wait 24 to 48 hours before using it on the face.
Full ingredient list
Bifida Ferment Lysate, Galactomyces Ferment Filtrate, Butylene Glycol, Methyl Gluceth-20, Water, Niacinamide, PEG-90, 1,2-Hexanediol, Glycerin, Squalane, Alteromonas Ferment Extract, Silk Extract, Goat Milk Extract, Sodium Hyaluronate, Panthenol, Adenosine, Glycereth-26, Xanthan Gum, Polyglyceryl-3 Distearate, Glyceryl Stearate SE, Glyceryl Stearate Citrate, Polyglyceryl-3 Methylglucose Distearate, Carbomer, Tromethamine, Caprylyl Glycol, Tropolone, Disodium EDTA
Notes: no fragrance, essential oils or drying alcohol are listed. Animal-derived ingredients: goat milk extract and silk extract. No nut-derived ingredients are listed.
Frequently asked questions
What does the No.3 Skin Softening Serum do?
It is designed mainly to hydrate and soften skin, with fermented ingredients and niacinamide for a brighter, smoother look. Think of it as a comfort and texture serum rather than a strong treatment.
Can I use it with retinol or vitamin C?
Yes, the formula has no strong acids, so it layers easily. Apply it before or after a vitamin C serum, and use it on retinol nights as a cushioning layer if your skin is sensitive.
Is numbuzin No.3 serum good for acne-prone skin?
It contains no heavy oils, so many acne-prone users tolerate it. People who react to yeast ferments should test it on a small area first.
Is it vegan?
No. It contains goat milk extract and silk extract.
Learn more
Building a routine around a serum? Read our Korean skincare routine for beginners.
Ingredient lists can change between batches and markets. Always check the box you receive. This page is an independent guide; melaxin.ca does not sell products directly.
