TIAM Vita B3 Source, 10% Niacinamide with 2% Arbutin, Daily Tone-Balancing Serum for Radiant-Looking Skin, Uneven-Looking Tone & Pore Care, Korean Skincare, 1.35 fl oz

Customers find the serum effective at brightening skin and lightening dark spots, while also appreciating its gentle texture and value for money. The product receives positive feedback for its quality and compatibility, with one customer noting it layers well with other products. While many customers report it doesn't cause irritation, some mention it can cause breakouts. The consistency receives mixed reviews, with several customers describing it as very sticky.