What it is
Betula Alba Juice is the watery sap collected from white birch trees and used in cosmetics as a botanical water-phase ingredient. It is sometimes used in place of part of the water in a formula to provide a hydrating, conditioning base along with naturally occurring minerals and sugars. In sunscreens it can appear as a higher-position ingredient contributing to a lightweight, watery feel.
Safety & warnings
Birch sap is generally well tolerated in topical use. Sensitization is uncommon but possible, and individuals with known birch-pollen sensitivities may prefer to patch test. As a watery, oil-free ingredient it is not associated with comedogenicity.
Origin & sourcing
Natural; the sap tapped from white birch trees (Betula alba / Betula pendula), in the Betulaceae family, typically harvested in early spring.
History
Birch sap has a long tradition of use as a seasonal drink and folk tonic in parts of Northern and Eastern Europe and East Asia. Its use as a watery base in modern skincare, especially in Korean formulas, draws on that heritage.
Questions everyone asks
Is birch juice the same as water?
No. It is the natural sap of the birch tree, used as a watery base that can partly replace plain water while adding naturally occurring minerals and sugars for a hydrating feel.
Why use it instead of water?
Formulators use it to give a lightweight, conditioning, botanical water phase, often to support a fresh, watery texture in the finished product.