# K-Secret SEOUL 1988 GLOW SERUM : NIACINAMIDE 15% + YUJA 30ml

A 30ml brightening serum for uneven, dull looking skin, stocked in the Original Korean Formula.

- Brand: K-Secret
- Product: SEOUL 1988 GLOW SERUM : NIACINAMIDE 15% + YUJA 30ml
- Price: $50.00
- Availability: In stock
- Size: 30 ml
- Market: Korean market, the version sold in Korea
- Made in: Republic of Korea
- EAN (barcode): 8809695240621
- Category: Serums & Ampoules

## Key benefits

- What it is: a 30ml serum from K-Secret, for the serum step.
- On the ingredient list: Niacinamide, Butylene Glycol, Glycerin, confirmed on this product's own manufacturer list rather than assumed from the category.
- Fits into the routine: delivers a targeted dose of its lead ingredients to the areas that need it most.
- Original Korean Formula: the version sold on Korean shelves, not a US reformulation.

## How it works

This is a thin serum rather than a cream, which is the right shape for tone work: a flat even layer over the whole face is what produces an even result. It goes between the toner and the cream, morning and night, because tone is built by consistency rather than by intensity in any one sitting. The finish is light enough to sit under sunscreen, which matters more here than for most steps, since tone work without that last layer is undone faster than it is built. That is the difference from a strong overnight tone treatment, which does more per use but has to be rationed to a few nights. What you can judge is whether the overall colour reads more even in the same light after a month.

## How to use

1. Apply after the toner while the skin is still damp so a thin layer covers the face in one pass.
2. Press it over the whole face rather than only the darker patches, since even tone needs full coverage.
3. Follow with a cream to hold it in place, and with sunscreen as the final morning step.
4. Do not skip the morning sunscreen, since tone work without that last layer is undone faster than it is built.

## Ingredients

Water, Niacinamide, Butylene Glycol, Glycerin, Glycereth-26, 1,2-Hexanediol, Caprylic/Capric Triglyceride, Pentylene Glycol, Macadamia Ternifolia Seed Oil, Ammonium Acryloyldimethyltaurate/VP Copolymer, Polyglyceryl-10 Laurate, Squalane, Panthenol, Hydrogenated Polydecene, Carbomer, Tromethamine, Hydrogenated Lecithin, Polyglyceryl-3 Methylglucose Distearate, Ethylhexylglycerin, Butyrospermum Parkii (Shea) Butter, Adenosine, Sodium Hyaluronate, Gellan Gum, Agar, Sodium Phytate, Beta-Glucan, Citrus Junos Fruit Oil, Glutathione, Helianthus Annuus (Sunflower) Seed Oil, Hydroxydecyl Ubiquinone, Melia Azadirachta Flower Extract, Ocimum Sanctum Leaf Extract, Melia Azadirachta Leaf Extract, Curcuma Longa (Turmeric) Root Extract, Corallina Officinalis Extract, Tranexamic Acid, Xanthan Gum, Tocopherol, Sodium Ascorbyl Phosphate

## FAQ

### What is this serum for?

Uneven tone and dullness, worked on together in a twice daily step rather than an occasional strong one. It is a thin serum over the whole face. You judge it on whether your overall colour reads more even in the same light after about a month of steady use.

### Where does it go in my routine?

After cleansing and toning, before moisturizer, morning and night. It lands on damp skin and the cream seals it in. In the morning sunscreen is the last layer, and with any tone product that layer matters more than the rest of the routine combined.

### Will it pill under sunscreen?

Rarely, since it is thin, and when it does the cause is usually too much product or not enough settling time. Use a small amount, wait thirty seconds, then the cream, then sunscreen. If it still balls up, cut the dose rather than dropping a layer.

### Can I use it with an exfoliating step?

Yes, if you stagger them. Keep this twice daily and give any exfoliating product its own separate evening, so you are not stacking two demanding steps in one sitting. If the skin starts feeling tight, drop this back to once a day for a week.

### Is this the Korean-market formula?

Yes. This is the Original Korean Formula 30ml bottle, the same one sold on Korean shelves.

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Page: https://korean-pharmacy.com/products/k-secret-seoul-1988-glow-serum-niacinamide-15-yuja-30ml