Round Lab Vita Niacinamide Dark Spot Serum

What is this product?

Round Lab's Vita Niacinamide Dark Spot Serum (30ml, plus three 1.5ml samples in the bundle) is built on sea buckthorn water as its actual base, not plain water, carrying five percent niacinamide as the real brightening driver. The dark-spot half of the name leans harder than the formula supports: tranexamic acid is present but at an undisclosed amount, and the vitamin C derivative is dosed at roughly 0.01 percent, far below the range usually needed to do real work on its own. No pH, no clinical test and no fragrance are disclosed for this SKU.

What makes it different?

Sea buckthorn water as the literal base, at nearly three quarters of the formula, is the one structural fact that separates this from a typical niacinamide serum built on plain water. Niacinamide at a disclosed five percent gives the brightening claim a genuinely dosed anchor. Where it falls short of its own dark-spot framing is the supporting cast: tranexamic acid carries no disclosed amount, and 3-O-ethyl ascorbic acid sits at roughly 0.01 percent, a trace level next to the doses usually discussed for that ingredient to matter on its own.

What is in it?

The full ingredient list as the brand publishes it, in the printed order. Each name links to what we know about that ingredient.

This brand publishes its ingredient list in Korean only. Names below are the matching INCI names from the Korean Cosmetic Association ingredient dictionary.

Key ingredient

• Hippophae Rhamnoides Water
• Niacinamide
• Propanediol
• Butylene Glycol
• 1,2-Hexanediol
• Isopentyldiol
• Water
• Glycerin
• Panthenol
• Tranexamic Acid
• Hippophae Rhamnoides Fruit Extract
• Centella Asiatica Extract
• Portulaca Oleracea Extract
• Rosmarinus Officinalis (Rosemary) Leaf Extract
• Chamomilla Recutita (Matricaria) Flower Extract
• Ficus Carica (Fig) Fruit Extract
• Hydrogenated Lecithin
• Helianthus Annuus (Sunflower) Seed Oil
• Caprylic/Capric Triglyceride
• Ethylhexylglycerin
• Adenosine
• Glutathione
• 3-O-Ethyl Ascorbic Acid
• Hydroxydecyl Ubiquinone
• Ceramide NP
• Bisabolol
• Carbomer
• Acrylates/C10-30 Alkyl Acrylate Crosspolymer
• Disodium EDTA
• Sodium Polyacrylate
• PVM/MA Copolymer
• Cyamopsis Tetragonoloba (Guar) Gum
• Agar
• Tromethamine
• Xanthan Gum
• Tocopherol
• Xanthophylls

Ingredients with no mark are ones we found nothing notable about, and when marks overlap on one ingredient we show the caution first.

We could not place these in the list above: 해바라기씨오일

Did the ad claims hold up?

We checked 2 lines this product advertises against the ingredient list and public documents. One of them holds up. The rest are only partly right or have nothing behind them.

Claims translated from Korean, originals preserved.

Each line is quoted as the brand published it, and each one was read on its own against the ingredient list and the documents the brand publishes.

How we read these lines