The Ordinary Vitamin C Suspension 23% vs TruSkin Vitamin C Super Serum
Paying $4.00 more for TruSkin buys you niacinamide.
TruSkin Vitamin C Super Serum adds niacinamide (moderate evidence) that The Ordinary Vitamin C Suspension 23% doesn't have. On consumer consensus, The Ordinary Vitamin C Suspension 23% holds 4.0★ across 9,100 reviews vs TruSkin Vitamin C Super Serum's 4.5★ across 13,700 reviews. The extra $4.00 for TruSkin Vitamin C Super Serum is defensible for the added niacinamide and stronger reviews.
Not medical advice — consult a dermatologist. Conditions are self-declared and never diagnosed by this app.