Gokujyun Premium Emulsion

A gold-standard humectant that draws water into the skin.

The salt form of hyaluronic acid; penetrates more readily.

A humectant that can hold many times its weight in water.

An acetylated form of sodium hyaluronate with enhanced surface-binding properties that provides long-lasting, film-forming hydration.

A cationic quaternary-ammonium derivative of hyaluronic acid that binds electrostatically to negatively charged skin proteins, delivering sustained surface hydration.

A crosslinked form of sodium hyaluronate that creates a hydrating matrix on skin for enhanced, sustained moisture retention.

A postbiotic lysate of fermented Lactococcus bacteria containing inactivated cells and metabolic byproducts, used to reinforce the skin barrier, soothe irritation, and support microbiome health.

Enzymatically hydrolyzed sodium hyaluronate with very low molecular weight for deeper skin penetration and enhanced hydration.

A high-molecular-weight polysaccharide from Aphanothece sacrum (Suizenji-nori), a rare freshwater cyanobacteria found in specific Japanese springs. Has exceptional water-retention capacity. Used in Hada Labo's premium formulations as a superior humectant.

A gentle soothing and skin-conditioning agent.

A naturally occurring amino acid that acts as a humectant and supports the skin's own moisture-retention system.