Cos De BAHA HB Serum contains hydroquinone and arbutin, which are powerful brightening ingredients,  effectively relieves pigmentation such as blemishes and blemishes and suppresses melanin production.  In addition, niacinamide, which strengthens the skin barrier and has anti-inflammatory properties,  is added to make the skin healthy and gives a uniform skin tone. It also provides a lot of moisture with  sodium hyaluronate to keep the skin moisturized and increase elasticity to make the skin look firm and young.