Threonine ●
TL;DR. This ingredient is used mainly as a skin-conditioning humectant, helping bind water in the stratum corneum and support a moisturized feel. It may also be included in amino-acid blends that mimic components of the skin’s natural moisturizing factor.
What does Threonine do in a cosmetic formula?
This ingredient is used mainly as a skin-conditioning humectant, helping bind water in the stratum corneum and support a moisturized feel. It may also be included in amino-acid blends that mimic components of the skin’s natural moisturizing factor.
Is Threonine clean?
From a clean beauty perspective, this ingredient is generally well tolerated, low in sensitization concern, and not a common restricted-list issue. It is a simple skin-identical type molecule rather than a controversial preservative, fragrance allergen, or persistent film former.
Is Threonine sustainable?
This material is commonly produced by fermentation from plant-derived sugars, though sourcing depends on the supplier. It is readily biodegradable and does not raise the persistence or bioaccumulation concerns associated with many synthetic polymers or silicones.
Is Threonine COSMOS-approved?
This ingredient can be compatible with COSMOS-natural and COSMOS-organic formulas when made through approved fermentation or other accepted natural-origin processes. Its profile fits Green Chemistry well, with renewable feedstock potential, water-compatible processing, and good biodegradability.
How does Threonine work chemically?
The molecule is a small polar alpha-amino acid with both amine and carboxyl groups plus a hydroxyl-bearing side chain, so it behaves as a zwitterion in many cosmetic pH ranges. Typical use levels are low, often around 0.01% to 1% in leave-on formulas, and it is generally water soluble and stable under normal cosmetic pH conditions.
Last updated 2026-05-13