Ergothioneine
Ergothioneine
Also known as: ergothioneine
ERG
1/10
Concern level
Low concern
A naturally occurring amino acid derivative with potent antioxidant properties. Ergothioneine helps protect skin from oxidative stress and supports overall skin health.
Chemical Properties
Molecular Weight
201.26 g/mol pH Range
5.00 - 7.00Typical Concentration
0.10% - 2.00%CAS Number: 497-30-3
Skin Type Compatibility
dry skin7/10
oily skin6/10
sensitive skin5/10
acne prone6/10
mature skin8/10
normal skin7/10
Interactions
incompatible with: No known significant interactions.
Risks & Warnings
Generally considered safe with low risk of irritation.
Vegan Cruelty-Free
Found In Products

The Ordinary
Multi-Antioxidant Radiance Serum with Vitamin C and Ginseng

The Ordinary
Alpha Arbutin 2% + Hyaluronic Acid for Hyperpigmentation

Paula's Choice
C15 Super Booster for Brightening Dullness & Uneven Tone

The Ordinary
Retinal 0.2% Emulsion High-Strength Retinoid Nighttime Treatment

Topicals
Slick Salve Glossy Lip Balm for Soothing + Hydration

Drunk Elephant
Bouncy Brightfacial Brightening Mask with 10% Azelaic Acid + 1% Salicylic Acid

Paula's Choice
25% Vitamin C + Glutathione Clinical Serum for Brightening & Dark Spots

Shiseido

