Shopping for a dark-spot product starts with two questions: do you know what the mark is, and what would this purchase add to the routine you already use? A serum’s name or percentage cannot answer either question by itself.
Editorial correction, 4 October 2026: We removed an unsupported eight-week test, invented product results and claims that higher concentrations work faster without irritation. This is a product-identity comparison, not a ranking based on clinical or hands-on testing.
Affiliate disclosure: We may earn a commission from eligible purchases through Mirai Skin. The pictured bottle is the actual K-SECRET 30 ml serum in the retailer’s photograph.
Separate the shopping decisions
| Your question | Useful next action |
|---|---|
| Is this an active breakout or a remaining mark? | For the breakout-shopping question, use our patch and acne-label guide |
| Do I know the cause of the discoloration? | Get individual assessment if it is unexplained, changing or persistent |
| Am I replacing a serum or adding a cream? | List what you already use; identify the missing role |
| Does a larger percentage mean a better choice? | Check the whole formula and directions; do not rank by the number alone |
The AAD’s guide for darker skin tones emphasizes identifying the cause and avoiding irritation. It recommends tinted, iron-oxide sunscreen with broad-spectrum SPF 30 or higher and water resistance. This guidance does not endorse the products below.
Two exact listings to compare
These are existing Mirai listings, not two products everyone needs. Choose according to the role you are actually shopping for; neither entry is evidence that a particular mark will fade.
| Product | Confirmed identity | Question before buying |
|---|---|---|
| K-SECRET SEOUL 1988 Glow Serum: Niacinamide 15% + Yuja | Serum, 30 ml; 15% appears in the product name | Are you replacing an existing serum, and have you checked the full formula? |
| AXIS-Y TXA 2.5% Intensive Brightening Cream | Cream, 50 ml; 2.5% appears in the product name | Is a cream the missing step, and does the label fit your existing routine? |
The K-SECRET product page also identifies the serum and 30 ml size. We have not independently assayed either formula or compared their performance. “15% niacinamide” and “2.5% TXA” refer to different ingredients, so their numbers are not a head-to-head strength score.
Both retailer listings showed availability on 4 October 2026. Confirm the current ingredients, directions, size, price, delivery and returns. A retailer’s description is useful for identity checks, but its treatment promises are not our clinical evidence. Neither product is presented here as a proven treatment for melasma.
Check sun protection before another serum
Our Korean sunscreen comparison helps distinguish two exact 50 ml formulas. It does not establish that either meets the tinted iron-oxide recommendation above. Verify the actual sunscreen label against your needs; a brightening serum does not replace sun protection.
Make a smaller, clearer shortlist
Save the full product name with our label checklist. Compare total delivered cost only once you are comparing products for the same role. A cheaper cream per millilitre is not automatically a better substitute for a serum.
Do not build a multi-active schedule from this table. If you use prescribed treatment, have a diagnosed condition or are unsure about a new product, take the ingredient list to your clinician. We cannot promise a fading deadline from a listing or prescribe a routine for a particular mark.
AI assisted this rewrite. The sources distinguish general professional guidance, brand identity and retailer availability; no personal test results are claimed.
