Hyaluronic acid (HA) is a naturally occurring molecule found in the body, particularly in the skin, connective tissues, and eyes. Known for its exceptional ability to retain water, it helps keep tissues well-lubricated and hydrated. In skincare, it is a widely celebrated ingredient for promoting hydration, improving skin elasticity, and reducing the appearance of fine lines and wrinkles. Hyaluronic acid is also used in joint health supplements and eye drops for its lubricating properties.

It is popular in anti-aging skincare products as it enhances skin moisture and creates a plump, youthful appearance. Additionally, HA is used in medical applications such as dermal fillers, wound healing, and osteoarthritis treatments. Its ability to attract and retain moisture makes it a cornerstone ingredient in hydration-focused formulations.