Oryza Sativa Lees Extract

Oryza Sativa Lees Extract is derived from sake lees — the sediment left behind during sake (rice wine) fermentation. The fermentation process concentrates beneficial lipids, particularly glucosylceramides and ceramides, which are naturally occurring compounds found in plant and fungal cell membranes.In skincare, this extract functions as a skin conditioner. Ceramides are a key structural component of the skin barrier, helping to bind moisture and maintain the skin's protective layer. The extract brings these barrier-supporting compounds into cosmetic formulations in a concentrated form.

The ceramides and glucosylceramides in sake lees extract work by integrating into the intercellular lipid matrix of the stratum corneum — the outermost layer of skin. This lipid layer is essential for preventing moisture loss and protecting against external irritants.Fermentation appears to increase the concentration of these beneficial lipids compared to unfermented rice, and may introduce fungal-derived sphingoid bases that enhance their biological activity. When applied topically, these compounds help to restore and maintain the skin's natural barrier function.

This ingredient is typically used as part of a broader moisturising formulation rather than as a standalone treatment. It works well in serums, creams, and emulsions. For best results, apply to clean, damp skin and allow it to absorb fully. It can be used daily as part of your regular skincare routine, either morning or evening, or both.

Oryza Sativa Lees Extract is generally well-tolerated and is derived from a food-grade fermentation process. As with any ingredient, patch test if you have known sensitivities to rice or fermented products.