O21 Black Swan Galactomyces + Vitamin C Glow Gift Set

The lit-from-within glow, in one set

Tired of skin that looks tired? Dull, uneven, a little flat by mid-afternoon? The O21 Black Swan Gift Set is built around the two ingredients K-beauty leans on most for that glassy, lit-from-within look: galactomyces ferment filtrate and vitamin C. Galactomyces is a fermented yeast filtrate prized in Korean skincare for refining texture and leaving skin looking clearer and more luminous. Vitamin C is the classic brightening antioxidant that helps even out the look of tone and adds glow. Put them together across a serum, a rich cream and a sheet mask, and you get a complete glow ritual rather than a set of unrelated single products.

Galactomyces + Vitamin C: the glow duo

These two actives do different jobs that add up to the same result. Galactomyces ferment filtrate works on clarity and moisture: it supports a soft, refined surface so skin looks plumper and more even. Vitamin C works on radiance: as an antioxidant it helps defend against the dullness that comes from daily environmental stress, and it brightens the overall look of the complexion. Used morning and night across the set, the pairing builds a visibly brighter, glowier finish over a few weeks of consistent use — the kind of glow that looks like good skin rather than highlighter.

What's in the set

Key ingredients

Full ingredients (INCI)

The set includes three cosmetic items, each with its own full ingredient list, plus a massage tool that contains no skincare ingredients. Galactomyces ferment filtrate and vitamin C (3-O-ethyl ascorbic acid) appear in all three.

Double Brightening Serum (50 ml)

Galactomyces Ferment Filtrate (48,500 mg), Niacinamide, Dipropylene Glycol, C12-13 Pareth-9, Water, Carbomer, 3-O-Ethyl Ascorbic Acid (Vitamin C, 1,000 ppm), Arginine, Zanthoxylum Piperitum (Japanese Pepper) Fruit Extract, Pulsatilla Koreana Extract, Usnea Barbata (Lichen) Extract, Adenosine, Fragrance (Parfum), Hamamelis Virginiana (Witch Hazel) Leaf Extract, Butylene Glycol, 1,2-Hexanediol, Sodium Hyaluronate

Black Swan Cream (50 g)

Water, Butylene Glycol, Cetearyl Alcohol, Dimethicone, Cetyl Ethylhexanoate, Galactomyces Ferment Filtrate (20,000 ppm), Niacinamide, Hydroxypropyl Starch Phosphate, Butylene Glycol Dicaprylate/Dicaprate, Sodium Methyl Stearoyl Taurate, Glycereth-26, Betaine, Isododecane, Polyglyceryl-3 Methylglucose Distearate, Butyrospermum Parkii (Shea) Butter, Glycerin, Propanediol, 3-O-Ethyl Ascorbic Acid (1,200 ppm), Camellia Sinensis (Green Tea) Leaf Extract, Bacillus/Soybean Ferment Extract, Candida Bombicola/Glucose/Methyl Rapeseedate Ferment, Oryza Sativa (Rice) Bran Oil, 1,2-Hexanediol, Glucose, Glyceryl Stearate, Disodium EDTA, Behenyl Alcohol, Boron Nitride, Cetearyl Glucoside, Stearyl Alcohol, Adenosine, Arachidyl Alcohol, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Arginine, Ethylhexylglycerin, Tocopheryl Acetate, Pentylene Glycol, Hydroxyacetophenone, Fragrance (Parfum)

Black Swan Sheet Mask (25 ml × 10)

Water, Glycerin, Methylpropanediol, Niacinamide, Galactomyces Ferment Filtrate (10,000 ppm), 1,2-Hexanediol, 3-O-Ethyl Ascorbic Acid (100 ppm), Disodium EDTA, Bacillus/Soybean Ferment Extract, Betaine, Butylene Glycol, Adenosine, Arginine, Ethylhexylglycerin, Schizophyllum Commune/Citrus Unshiu Peel Extract Ferment Filtrate, Carbomer, Tocopheryl Acetate, Trehalose, Pentylene Glycol, Polysorbate 80, Propanediol, Hydroxyacetophenone, Hydroxyethyl Cellulose, Fragrance (Parfum)

How to use

1. After cleansing and toning, apply 2–3 drops of the Double Brightening Serum and press gently into damp skin
2. Follow with the Black Swan Cream to seal in the serum, morning and evening
3. In the morning, finish with SPF before makeup
4. Once or twice a week, swap in a Sheet Mask for 15–20 minutes after toning, then pat in the leftover essence
5. Optional: use the massage tool to press products in and give a spa-style finish
6. For best glow, give the vitamin C a few weeks of consistent daily use

Who this is for

• Anyone whose skin looks dull, flat, or uneven and wants that lit-from-within glow back
• Glass-skin fans who want galactomyces and vitamin C in one coordinated routine
• Gift-buyers after a complete, ready-to-wrap K-beauty set rather than a single jar
• Routine-builders who'd rather start with a matched serum-cream-mask trio than guess at separate brands

Specs

Shipping & delivery

Ships from South Korea via express international courier. Estimated delivery: 7–12 business days to Australia. A tracking number is provided within 2 business days of dispatch. The set arrives in protective packaging — all jars, the serum bottle and the masks are sealed and safe for air transport.

Frequently asked questions

Can I use galactomyces and vitamin C together every day?

Yes. This set is designed to be layered morning and night, with the serum first and the cream on top. Galactomyces is gentle and works well with daily use, while vitamin C is best applied consistently to build up its brightening glow. If your skin is new to vitamin C, start once a day for the first week and build up to twice daily as it gets comfortable.

What is the massage tool for?

The set includes a small facial massage / gua-sha tool. It has no skincare ingredients of its own — use it after the serum or cream to press the products in and give a relaxing, spa-style finish. It is entirely optional; the serum, cream and mask work perfectly well on their own.

How long does the set last, and is it good value?

With twice-daily use, the 50 ml serum comfortably lasts a few months and the 50 g cream a similar stretch, while the sheet masks cover roughly 5–10 weekly sessions. Buying the coordinated set usually works out more economical than picking up the serum, cream and masks separately, and the four pieces are formulated to layer cleanly.

Is this set okay for sensitive or combination skin?

The formulas are built for all skin types and lean on hydrating, soothing-feeling ingredients like hyaluronic acid and glycerin alongside the actives. Combination and oily skin can use the lightweight serum all over and apply the cream more sparingly where skin feels drier. As with any new vitamin C product, patch-test on your inner arm first if your skin tends to react.