Citrus Iyo Peel Extract

Citrus Iyo peel extract is derived from the rind of the Iyo citrus fruit, a Japanese variety known for its high water content and polysaccharide composition. In skincare formulations, it functions primarily as a humectant—a substance that attracts and binds water molecules to the skin's surface and upper layers.The extract contains natural sugars and other hydrophilic compounds that help the skin retain moisture. Unlike some botanical extracts used for their antioxidant or anti-inflammatory properties, Citrus Iyo peel extract is valued specifically for its moisture-binding capacity, making …

Humectants work by absorbing water from both the air and deeper skin layers, then holding that moisture in place. Citrus Iyo peel extract achieves this through its natural sugar and polysaccharide content, which have a hygroscopic nature—meaning they attract water molecules.When applied to the skin, these compounds sit in the stratum corneum (the outermost layer) and bind water, preventing it from evaporating. This is why humectants are most effective when applied to damp skin or used alongside an occlusive ingredient, which seals in the moisture the humectant has drawn in.

For best results, apply Citrus Iyo peel extract to damp skin and follow with a moisturiser or occlusive product to lock in the hydration it draws in. It works well in serums, essences, and lightweight lotions. There is no upper limit on daily use, though it is most beneficial when layered as part of a complete hydration routine rather than relied upon alone.

Citrus Iyo peel extract is generally well-tolerated. As with any citrus-derived ingredient, those with known sensitivity to citrus or fragrance should patch test first, as some formulations may contain residual citrus oils.