Dr. Barbara Sturm Hyaluronic Serum

This is a hydrating serum in a 30 ml bottle with a dropper applicator. The brand says it's the cornerstone of their line, built on low and high molecular weight hyaluronic acid. Hyaluronic acid is a humectant that attracts water to the skin; per the brand, the lower-weight molecules penetrate deeper to enhance elasticity, while the higher-weight ones hydrate the surface for a dewy appearance. The formula also contains purslane extract, which the brand claims calms irritation, protects against environmental stressors, and strengthens the skin barrier.

Per the brand, this serum is suitable for all skin types, including sensitive skin, and is described as lightweight and fast-absorbing for daily use. It's fragrance-free and paraben-free. The brand says the serum addresses dehydration-related fine lines and dryness, though results depend on consistent use and individual skin response. The brand positions it as versatile enough for travel and suitable across different climates.