Emulsion (Skincare)

An emulsion is a lightweight, fluid moisturiser in which oil and water are blended into a stable, milky mixture; in a routine it typically sits after essence and serum but before, or in place of, a heavier cream. The word describes both a physical structure and a popular product format, especially in Korean and Japanese skincare.

Structurally, an emulsion holds tiny droplets of oil dispersed in water (or the reverse) with the help of emulsifiers that keep the two phases from separating. Because the oil load is low, the texture is thin and spreads easily, delivering humectants and a little softening oil without a rich or greasy finish. This makes emulsions a lighter alternative to traditional creams while still providing a basic moisture seal.

Emulsions suit normal, combination, and oily skin, and warmer climates where heavy creams feel uncomfortable. They are usually applied to slightly damp skin and can be followed by sunscreen in the morning or a richer cream at night if more occlusion is wanted.

• Often enough on its own for oilier skin types.
• Very dry skin may need a cream layered on top.

As with any product, a new emulsion is best introduced alongside a stable routine so any reaction can be traced.