Dear Klairs Fundamental Deep Hydration Watery Oil Drop is the water-based serum designed to provide deep hydration to the skin while offering the benefits of a facial oil without the greasy finish. The inclusion of key ingredients like green tea, ferment extracts, ceramides, and peptides indicate a focus on providing antioxidant protection, promoting skin regeneration, and potentially addressing signs of aging. Green tea is known for being a powerful antioxidant. Antioxidants help protect the skin from free radicals, which are unstable molecules that can cause damage to cells. Green tea also has calming properties and can provide moisture to the skin. Ferment extracts are rich in antioxidants and are said to promote luminosity in the skin. They can also help strengthen the skin's natural barrier. The skin's barrier is important as it acts as a defense against external factors and helps maintain hydration. Ceramides are a type of lipid molecule that make up a significant portion of the protective barrier of the skin. They help retain moisture, which is crucial for skin health. With age and various external factors, the production of ceramides can decrease, leading to skin dehydration, dryness, and a weakened barrier. Using skincare products containing ceramides can be beneficial for addressing these concerns. Peptides are short chains of amino acids that play a role in various skin functions. They can assist in the regeneration of the skin and contribute to the production of collagen, a protein that helps maintain skin's elasticity and firmness. This can be particularly helpful in reducing the appearance of expression lines and wrinkles. The Deep Hydration Watery Oil Drop is targeted towards individuals seeking intense hydration and skin improvement without the drawbacks of traditional oil-based products. The use of a non-sticky texture that absorbs well into the skin suggests that the product aims to deliver moisture without leaving a heavy or uncomfortable residue.