−93%per oz

Paula's Choice · $53The Ordinary · $5.40

Shared: Niacinamide
The trade-off: Paula's Choice adds acetyl glucosamine, a vitamin C derivative and licorice for brightening, while The Ordinary adds 1% zinc PCA for oil control and can pill under silicone-heavy products.
Sizes: 20 ml against 30 ml

Paula's Choice 10% Niacinamide Booster dupe

10% Niacinamide Booster costs about $53 for 20 ml ($78.37 / fl oz). The closest match below is The Ordinary Niacinamide 10% + Zinc 1% at $5.40, about 93% less per ounce. Each pair is compared on format, finish and key ingredients, including what the dupe doesn't do.

Concentrated 10% niacinamide serum for enlarged pores, uneven tone and oiliness, with acetyl glucosamine, a vitamin C derivative and licorice. A few drops alone or mixed into a moisturizer.

Original: $53
Cheapest dupe: $5.40
You save: 93%

Amazon prices as of Sep 25, 2026, 7:41 PM ET, subject to change: the price on Amazon at checkout is the one that applies.

Buy the $5.40 dupe See the original

The dupe, side by side

The original

Paula's Choice

10% Niacinamide Booster

$53

$78.37 / fl oz

−93%per oz

Cost per fl oz

Paula's Choice$78.37 / fl oz

The Ordinary$5.32 / fl oz

$47.60 less at checkout than the original.

Size: Original · Paula's Choice20 ml; Dupe · The Ordinary30 ml
Key ingredients: Original · Paula's ChoiceNiacinamide, Acetyl glucosamine, Ascorbyl glucoside; Dupe · The OrdinaryNiacinamide, Zinc PCA

What matches

Same active at the same strength: 10% niacinamide, second on both lists right after water, in a thin serum for pores, oil and uneven tone.

What the dupe does worse

Paula's Choice adds acetyl glucosamine, a vitamin C derivative and licorice for brightening, while The Ordinary adds 1% zinc PCA for oil control and can pill under silicone-heavy products.

Buy the original Buy the dupe

Questions

What is the best dupe for Paula's Choice 10% Niacinamide Booster?

The Ordinary Niacinamide 10% + Zinc 1% at about $5.40. Same active at the same strength: 10% niacinamide, second on both lists right after water, in a thin serum for pores, oil and uneven tone.

How much cheaper is The Ordinary Niacinamide 10% + Zinc 1% than 10% Niacinamide Booster?

10% Niacinamide Booster costs about $53 for 20 ml, or $78.37 / fl oz. The Ordinary Niacinamide 10% + Zinc 1% works out at $5.32 / fl oz, roughly 93% less per ounce.

What does The Ordinary Niacinamide 10% + Zinc 1% do worse than 10% Niacinamide Booster?

Paula's Choice adds acetyl glucosamine, a vitamin C derivative and licorice for brightening, while The Ordinary adds 1% zinc PCA for oil control and can pill under silicone-heavy products.