Enhances skin hydration and barrier function: Ectoin binds water strongly, increasing moisture retention in skin. It also stabilizes cell membranes and proteins, protecting skin from heat, UV, and pollution stress. Clinical use of creams with ectoin showed improved symptoms of atopic dermatitis – skin hydration increased and barrier integrity improved, with reduction in inflammation. Ectoin can visibly calm irritation and help the skin resist environmental damage, making it smoother and less reactive.