The Lab by blanc doux Oligo Hyaluronic Acid Boosting Ampoule is a highly concentrated formula designed to deeply hydrate the skin without leaving a sticky residue, thanks to its small molecular size hyaluronic acid that penetrates effectively. Its mild acidic pH level and exclusion of potentially irritating ingredients like artificial fragrances, colors, and salicylic acid make it suitable for sensitive skin, ensuring a smooth and hydrated complexion.