Klairs Midnight Blue Youth Activating Facial Drop focuses on utilizing key ingredients like EGF (sh-Oligopeptide-1) and bFGF (sh-Polypeptide-1) to promote skin health, improve elasticity, and address issues like pigmentation and fine lines. EGF and bFGF are naturally occurring substances in the body that play important roles in maintaining skin firmness, elasticity, and tone. However, as the body ages, the production of these substances decreases, leading to a decrease in skin quality and the onset of wrinkles and other signs of aging. The serum is formulated to address these issues and potentially slow down the aging process by replenishing these lost factors and protecting the skin from external irritants like UV rays. The blue tint in the serum is likely due to the presence of guaiazulene, and the absence of purified water in the formula suggests a focus on concentrated and effective ingredients. It's also worth noting that the serum seems to have undergone primary skin irritation tests and is suitable for sensitive skin. This suggests that the product has been evaluated for its potential to cause irritation or adverse reactions on the skin, which is important for ensuring that it is safe for use. Overall, the Klairs Midnight Blue Youth Activating Facial Drop seems to be formulated to address common skin concerns related to aging and to promote a more youthful and radiant complexion.