NINELESS B-Boost 1% Kojic Acid Serum
By Nur → Last verified 10/6/2026
Price checked 10/6/2026
YesStyle price checked 2026-10-06 (promotional price that day). Ingredient list source: https://www.yesstyle.com/en/nineless-b-boost-1-kojic-acid-serum-30ml/info.html/pid.1137882440.
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What we found
Based on how this product compares to others in the serums category, cross-referenced against retailer listings and market data.
Strengths
- + Niacinamide, tranexamic acid, kojic acid and glutathione on the ingredient list
- + Highly rated by shoppers at partner stores
Key ingredients
These are the ingredients NINELESS highlights for this product, cross-checked against general dermatological and cosmetic-chemistry sources, not a full INCI list.
Fragrance: No fragrance or essential oil appears in the published ingredient list; brand confirmation pending.
| Ingredient | What it is | What it does for skin |
|---|---|---|
| Niacinamide | A form of vitamin B3, one of the most studied ingredients in cosmetic dermatology. | Strengthens the skin barrier by boosting ceramide production, helps even out tone by limiting pigment transfer to skin cells, and can reduce the look of enlarged pores. |
| Acetyl hexapeptide-8 | A short synthetic peptide, sold under the trade name Argireline, often marketed as a topical alternative to wrinkle-relaxing injections. | Studied for softening the look of expression lines; effects are modest and mostly shown in short, brand-sponsored studies. |
| Copper tripeptide-1 | A short peptide (GHK) bound to copper, studied in skin-repair and wound-healing research. | Used as a skin-conditioning peptide that supports the look of firmer, smoother skin; most of the evidence comes from small studies. |
| Sodium hyaluronate | The salt form of hyaluronic acid, commonly used for its water solubility and stability in formulas; molecular weight varies by product rather than being uniformly smaller. | Draws and holds moisture the same way hyaluronic acid does; how easily it absorbs depends on the specific molecular weight used, which formulas don't always disclose. |
| Panthenol | Pro-vitamin B5, which converts to pantothenic acid once absorbed into skin. | Hydrates as a humectant, supports wound healing, and has anti-inflammatory, soothing effects on irritated skin. |
| Tranexamic acid | A synthetic amino-acid derivative used medically to reduce bleeding and in skincare for uneven tone. | Used in cosmetics for brightening and to help fade the look of dark spots; results at skincare strengths are modest and build slowly. |
| Glutathione | An antioxidant naturally produced by the body, also used topically in some brightening formulas. | Helps neutralize free radicals and is marketed for brightening, though topical absorption and efficacy are less established than oral or injectable use. |
| Betaine | An amino-acid-derived humectant, naturally found in sugar beets and also present in snail mucin. | Helps draw and hold moisture in the skin, and has mild soothing properties. |
What the brand says
NINELESS's own marketing claims, not our own findings.
- Kojic acid 1% with niacinamide and tranexamic acid
- Brightening for dark spots
Research-Based
Our assessment comes from pricing, ingredients, and published information, not personal use, the same standard we apply across the site. This product hasn't been hands-on tested yet. See our Methodology for what that distinction means.
Price history
Current price is the lowest we've recorded so far.
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Frequently asked
How much does NINELESS B-Boost 1% Kojic Acid Serum cost per mL?
$0.33 per mL (currently $9.80 for 30 mL).
Has NINELESS B-Boost 1% Kojic Acid Serum been hands-on tested?
Not yet. Our assessment for this product comes from pricing, ingredients, and published information, not personal use, the same standard we apply across the site. See our Methodology for what that distinction means.
What are the key ingredients in NINELESS B-Boost 1% Kojic Acid Serum?
The ingredients NINELESS highlights for this product include Niacinamide, Acetyl hexapeptide-8, Copper tripeptide-1, Sodium hyaluronate, Panthenol, Tranexamic acid, Glutathione, Betaine.
Sources
Pricing and availability for this product were verified against the following retailer listings.