Authentic Klairs Freshly Juiced Vitamin Drop, Brightening Vitamin C Face Serum A daily serum that are safe and non-irritating to energize and rejuvenate the skin with the power of Concentrated Vitamin C and key ingredients from nature provides plentiful moisture and nutrition for skin Fade brown spots, Protect the skin from pigmentation from occurring P/S i have tried this serum as one of my favourite and genlte Vitamin C for morning routine compare to others Korean Brand. Its a little bit feeling Hot ( not burning) when you first apply. But after, it quickly absorb to your skin and not feel sticky. It suit with other moisturier cream as well