INCI Name
Betaine Anhydrous
Functions
3 Roles
Sustainability
8/10
Category
humectants
What It Does
Betaine Anhydrous (trimethylglycine) is a naturally occurring zwitterionic compound originally isolated from sugar beet (Beta vulgaris) molasses, where it accumulates as an osmoprotectant. Its unique zwitterionic structure allows it to attract and retain water molecules exceptionally well while simultaneously acting as a cellular osmolyte, helping skin cells maintain hydration under osmotic stress. Formulators prize it for its ability to improve skin smoothness and moisture retention, enhance the sensory feel of formulations, and boost the mildness of surfactant systems by reducing irritation potential — all while being highly water-soluble, stable across a broad pH range, and compatible with virtually all cosmetic ingredient classes.
Technical Properties
pH Range
5.5-7.5
Optimal working range
Ionic Charge
zwitterionic
Molecular charge type
Viscosity Effect
neutral
Impact on formula thickness
Foaming Ability
none
Lather generation
Ingredient Compatibility
Works Well With
Avoid Combining
Sustainability Profile
Sustainability Score
Biodegradability
readily biodegradable
Source
plant-derived
Feedstock
Sugar beet molasses (Beta vulgaris); also found naturally in wheat, spinach, and shellfish
Related Ingredients
Similar humectants to explore
Quick Reference
- Full INCI Name
- Betaine Anhydrous
- Common Name
- Trimethylglycine (TMG / Betaine Anhydrous)
- Category
- humectants