Algin is a seaweed extract that hydrates and soothes the skin, all while supporting the skin barrier. Algin is a humectant, meaning hydrates your skin by attracting water to the top layer of your skin, either from the air or from your dermis.

As an anti-inflammatory ingredient, algin can soothe itchiness, stinging, redness, and irritation, making it a good ingredient for people with sensitive, reactive skin.

Algin also thickens the texture of whatever product it's in, allowing for a more smooth, enjoyable application. It has antioxidant properties, meaning it can protect from the free radicals that can age and damage your skin.