Is it worth it?

The Inkey List Niacinamide Serum vs Naturium Azelaic Topical Acid 10%

Cheaper
The Inkey ListNiacinamide SerumTreatment
$8.991 oz · $8.99/oz
niacinamide
Buy ↗
Pricier
NaturiumAzelaic Topical Acid 10%Treatment
$20.001 oz · $20.00/oz
azelaic acidniacinamide
Buy ↗
The verdict

Paying $11.01 more for Naturium buys you azelaic acid.

Naturium Azelaic Topical Acid 10% adds azelaic acid (strong evidence) that The Inkey List Niacinamide Serum doesn't have. On consumer consensus, The Inkey List Niacinamide Serum holds 4.3★ across 12,400 reviews vs Naturium Azelaic Topical Acid 10%'s 4.4★ across 5,600 reviews. The extra $11.01 for Naturium Azelaic Topical Acid 10% is defensible for the added azelaic acid.

Not medical advice — consult a dermatologist. Conditions are self-declared and never diagnosed by this app.