Trehalose

Trehalose is a disaccharide famous in biology for protecting cells of resurrection plants and tardigrades through complete desiccation — a natural anhydrobiotic protectant. In skincare it functions as a humectant that also shields cellular structures from dehydration, heat, and oxidative stress. Research shows it stabilises proteins and lipid membranes, reduces UV- and pollution-induced damage, and keeps skin supple under environmental pressure. At 1–3% it adds a soft, smooth skin feel. Especially useful in products for extreme climates, frequent flyers, and skin stressed by actives. A quiet, elegant protective sugar that does far more than its ingredient-list position suggests.