The "Kojic/Clear Intensive Brightening Serum" is a 15ml facial serum designed to brighten skin and reduce the appearance of dark spots and uneven skin tone. It contains kojic acid, which is known for its skin-lightening properties. The serum is typically applied to clean, dry skin, and can be used twice daily for best results. It's important to follow up with sunscreen during the day, especially when using products containing kojic acid. Kojic acid is generally considered safe for daily use, but it's recommended not to use it for more than 3 months continuously.