A sulfur-containing amino acid derivative used as an antioxidant.
What it is
Ergothioneine is a naturally occurring derivative of the amino acid histidine that contains sulfur (a thiourea group within an imidazole ring). It is known for its presence in mushrooms. CosIng lists it as an antioxidant and skin-conditioning ingredient.
Where it is used
Found in serums, creams, eye creams and other skin care products.
Limits of interpretation
The INCI list shows which ingredients are present, not how much of each. Above 1%, ingredients are listed in descending order of weight; below 1% the order is free.
The INCI name does not reveal whether it was obtained by fermentation, extraction or synthesis.
Functions
- Antioxidant
- Inhibiting reactions promoted by oxygen, thus avoiding oxidation and rancidity.
- Skin conditioning – miscellaneous
- Enhancing the appearance of dry and/or damaged skin by reducing flaking and restoring suppleness.
EU regulation
This ingredient is not listed in the annexes of Regulation (EC) No 1223/2009 in the CosIng data.
Products with this ingredient (27)
- Skin Tone Balancing Eye Cream · BABOR
- Skin Tone Balancing Cream · BABOR
- Derma Control Serum · BABOR
- Retinol Refining Serum · BABOR
- Vitamin C-20 Serum · BABOR
- Vitamin B Calming Serum · BABOR
- Overnight Acid Peeling Leave-On · BABOR
- Balancing Ointment Cleanser · BABOR
- Longevity Serum · BABOR
- Exo Youth Serum · BABOR
- Exo Youth Cream · BABOR
- Exfoliating Antioxidant Gel · BABOR