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Ergothioneine

Antioxidant

Ergothioneine

Antioxidant, protective, soothing

Key Benefits

  • Supports antioxidant defense
  • Helps protect against visible environmental stress
  • Complements photodamage-focused care
  • Supports a calm, resilient appearance

How It Works

Ergothioneine can scavenge reactive species, chelate certain metal ions, and support cellular redox balance. The OCTN1 transporter enables uptake by skin cells in laboratory models.

It complements, rather than replaces, other antioxidants and broad-spectrum sunscreen. Topical effectiveness depends on delivery through the stratum corneum and the complete formulation.

Ingredient Details

INCI Name: Ergothioneine

Ingredient Type: Sulfur-containing amino-acid antioxidant

Best For

All skin types · Environmentally stressed skin · Dull-looking skin · Age-supportive routines

Research

View Skin Cell Ergothioneine Research →

What It Is

A low-molecular-weight, sulfur-containing derivative of the amino acid histidine, often supplied as L-ergothioneine.

It is distinct from glutathione, cysteine, vitamin C, and ordinary mushroom extract.

What It Does

Helps support the skin’s antioxidant network and defend against visible effects of oxidative and environmental stress. It can complement formulas targeting dullness and early signs of aging.

It is supportive rather than a sunscreen or medical treatment, and finished-product testing determines real-world performance.

Ergothioneine FAQs

Common questions about this ingredient in skincare.

What is ergothioneine?
It is a naturally occurring sulfur-containing amino-acid derivative used in skincare for stable antioxidant and cellular-defense support.
Where does ergothioneine come from?
It is produced by certain fungi and microorganisms and is abundant in some mushrooms. Cosmetic-grade material may be produced through controlled biotechnology.
How does skin use it?
Skin cells express the OCTN1 transporter, which can take up ergothioneine and concentrate it within cells in laboratory studies.
Can it replace vitamin C?
No. They are different antioxidants with complementary properties, and a formula may use both.
Does it replace sunscreen?
No. Antioxidant support does not provide tested SPF protection. Broad-spectrum sunscreen remains essential for UV protection.
Is it suitable for sensitive skin?
It is generally positioned as a gentle antioxidant, but individual sensitivity and the complete formula determine tolerability.
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Products Featuring Ergothioneine

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