سيروم تفتيح البشرة وشدها — حمض الترانيكساميك 5% + تيتراببتيد

I've been using this for about three weeks, and the serum absorbs quickly without feeling sticky, which I appreciate. I haven't noticed much change in my dark spots yet, though my skin does feel slightly firmer. It's okay for the price, but I was hoping for faster results on hyperpigmentation.