Science behind this face serum: Niacinamide, or vitamin B3, is an essential nutrient for living cells. It is a well-researched molecule of importance as it builds an epidermal barrier that acts as the first line of defense against oxidative stress. Niacinamide is involved in the biosynthesis of ceramides in keratinocytes and as a result the increased rate of ceramide synthesis influences the barrier effect of the stratum corneum (outer most layer of skin). Niacinamide further has anti-inflammatory and anti-microbial benefits. We have formulated this product for people with dry, sensitive skin and with primary objective on reducing trans epidermal water loss, hence the inclusion of 1% Hyaluronic acid. While Niacinamide influences the barrier effects, Hyaluronic further seals the moisture inside so your skin remains hydrated for long. Ideal for people with dry, sensitive skin & those who find Niacinamide 10% a little strong