Betaine ●
TL;DR. This ingredient is used mainly as a humectant and skin-conditioning agent, helping formulas hold water and feel less tight or dry on skin and hair. It can also soften the feel of surfactant systems in cleansers.
What does Betaine do in a cosmetic formula?
This ingredient is used mainly as a humectant and skin-conditioning agent, helping formulas hold water and feel less tight or dry on skin and hair. It can also soften the feel of surfactant systems in cleansers.
Is Betaine clean?
From a clean-beauty perspective, it is generally well tolerated, low in sensitization concern, and not a common restricted-list issue. It is a straightforward functional ingredient rather than a preservative, fragrance component, or high-allergen material.
Is Betaine sustainable?
This material is commonly sourced from sugar beet or other plant-derived feedstocks, though synthetic routes also exist. It is water soluble and expected to biodegrade readily, with a relatively favorable environmental profile when plant-derived.
Is Betaine COSMOS-approved?
It is permitted under COSMOS-natural and COSMOS-organic frameworks when produced from accepted natural or nature-derived feedstocks and processes. It fits Green Chemistry well when sourced renewably, with good biodegradability and no need for persistent solvent systems in finished formulas.
How does Betaine work chemically?
The molecule is a small zwitterionic amino-acid derivative with a permanent positive center and a carboxylate group, which explains its strong water-binding and compatibility in aqueous formulas. Typical use levels are about 0.5% to 5% in leave-on products and higher in some rinse-off systems, and it is broadly stable across normal cosmetic pH ranges.
Last updated 2026-05-13