I've been using this serum consistently, and I've noticed my skin looks brighter and more even. It feels lightweight, absorbs quickly, and doesn't leave a sticky finish. My skin feels hydrated, and I like that it contains Vitamin C, Panthenol, and peptides.
It takes time to see visible improvement in dark spots, so patience is needed. I also make sure to wear sunscreen during the day while using it. Other than that, I haven't experienced any major issues.