4 Best Brightening Serums for Dull Skin 2026: CeraVe, Bubble & Good Molecules

These are the stated criteria behind the comparison below.

$23.86, 4.5 stars across 6,708 reviews. 10% L-ascorbic acid; the highest review volume of the four, and the strongest default recommendation. L-ascorbic acid is the most studied and most potent form of vitamin C in skin care, but it's also the least stable, which is why CeraVe's formulation and packaging choices matter as much as the concentration number itself. Opaque, airless packaging is the detail most often cited as the reason this formula holds up better over its shelf life than serums packaged in clear dropper bottles.

$14.97, 4.6 stars across 2,359 reviews. Combines vitamin C with niacinamide in one lower-cost step. Pairing the two actives in a single formula is a convenience choice more than a potency one — it reduces routine steps for readers who'd otherwise be layering two separate serums. Its rating, at 4.6 stars, is actually the highest of the four primary picks, even though its review count is well below CeraVe's.

$8.00, 4.6 stars across 1,200 reviews. The lowest price of the four, with a comparably strong rating. Its review count is the smallest of the four primary picks, but its rating holds up against the pricier options, making it a reasonable low-commitment starting point. At roughly a third of CeraVe's price, it's the pick most often recommended to readers testing whether a brightening serum fits their routine before investing in a pricier option.

$15.99, 4.4 stars across 1,462 reviews. The lowest-rated of the four, though still broadly positive. It's included here rather than dropped because a 4.4-star rating across nearly 1,500 reviews is still a solidly positive signal — it simply doesn't lead the comparison the way CeraVe's volume and rating combination does. It sits in the middle of the price range of the four, which is part of why it doesn't stand out on either the budget or premium end of this comparison.

All four of the Western picks above, and Anua's serum below, are formulated as a treatment step applied after cleansing and toning, before moisturizer. Vitamin C serums are commonly used in the morning specifically because of their antioxidant role in offsetting daytime environmental exposure, though several of the four brands above also market their formula for flexible AM or PM use. Anua's tranexamic-acid-and-arbutin formula doesn't carry the same daytime-antioxidant framing, since its mechanism isn't built around photoprotection the way vitamin C's is.

Anua's Niacinamide 10% + Tranexamic Acid 4% + Arbutin 2% Serum, per the brand's own product page, combines three tone-focused ingredients in one formula rather than centering on vitamin C alone. That's a genuinely different approach from the four Western picks above, all of which lead with vitamin C as the primary active. Tranexamic acid and arbutin are both used in skin care for uneven tone through different mechanisms than vitamin C's antioxidant pathway, so the formula isn't simply a K-beauty version of the same idea — it's a different ingredient strategy aimed at a similar end result.

It's worth being direct about where this serum stands relative to the primary four: it isn't being ranked above CeraVe's higher-review-volume pick here, and neither of the two other sites covering this same comparison lead with Anua on review volume either, because it can't win that specific metric against a 6,708-review incumbent. Its case is the ingredient-combination angle — texture and tone addressed together in one formula — which is a real, sourced reason to consider it, not a forced substitution for the top pick.

Arbutin, in particular, is a tyrosinase-inhibiting ingredient with a somewhat different action profile than vitamin C — it works upstream on melanin production rather than acting primarily as a surface antioxidant, which is one reason a niacinamide-tranexamic-arbutin combination formula reads as a genuinely different approach rather than a reformulated vitamin C serum with different branding.

Whichever of the five serums here a reader picks, patch-testing on a small area for several days before full-face application is a reasonable step for any active-ingredient serum, vitamin-C-led or otherwise. This is particularly relevant for L-ascorbic acid formulas like CeraVe's, which can cause mild tingling on first use for some readers, and it's a sensible habit before introducing tranexamic acid or arbutin as well, even though neither is generally considered a high-irritation ingredient.

Direct answers to the questions this comparison raises most often.