What it is
This ingredient is the watery sap (juice) collected from the Japanese white birch, Betula platyphylla japonica. It is often used in place of or alongside water as a botanical base that provides hydration and a light, fresh skin feel. It contributes naturally occurring sugars and minerals and supports a plant-forward, hydrating positioning.
Safety & warnings
Birch juice is generally well tolerated and is used as a gentle, water-like base. People with known birch pollen allergy may wish to patch test, though the sap is distinct from pollen. It is not associated with comedogenicity.
Origin & sourcing
Natural, collected as sap from the Japanese white birch (Betula platyphylla japonica) tree.
History
Birch sap has a long tradition of use as a drink and folk remedy in parts of Northern Europe and East Asia, and it has been adopted more recently as a botanical base in skincare.
Questions everyone asks
What is birch juice in skincare?
It is the watery sap of the Japanese white birch tree, used as a hydrating, skin-conditioning base in place of or alongside water.
Why do brands use birch sap instead of water?
It provides hydration with naturally occurring sugars and minerals and supports a botanical, plant-forward formula positioning.