What Is Ergothioneine?

Ergothioneine is a naturally occurring sulfur-containing amino acid derivative. Unlike many antioxidants that our bodies can produce on their own, ergothioneine is not synthesized by humans or other mammals—we must obtain it from our diet or through topical applications. It was first discovered in 1909 by Tanret, who isolated it from rye grain infected with ergot fungi, giving it its name. Today, we know that ergothioneine is abundant in certain foods, including mushrooms, red and black beans, red meat, liver, and grains, but it can also be produced through microbial fermentation and advanced extraction techniques.

Unlike conventional antioxidants (such as vitamin C or E) that are quickly consumed when they neutralize free radicals, ergothioneine is resistant to auto-oxidation and can be recycled in the body, providing long-lasting protection. It also acts as an "adaptogenic antioxidant," meaning it prioritizes protecting cells that are most damaged by oxidative stress without interfering with the normal function of reactive oxygen species—which are essential for healthy cellular processes.

The Science of Skin Aging: WhyErgothioneine Matters

There are two main types of skin aging: intrinsic (natural aging) and extrinsic (caused by external factors). Intrinsic aging is driven by genetics and the gradual decline of cellular function over time, leading to thinner skin, loss of elasticity, and fine lines. Extrinsic aging—responsible for up to 80% of visible aging signs—is caused by factors like ultraviolet (UV) radiation, pollution, stress, and poor diet, all of which trigger excessive ROS production and inflammation.

ROS are unstable molecules that damage skin cells, break down collagen and elastin, and trigger the production of melanin. They also damage mitochondrial DNA—mitochondria are the "powerhouses" of cells, and when they are damaged, cells lose energy, leading to dull, tired-looking skin. Inflammation, meanwhile, accelerates the breakdown of the skin’s extracellular matrix, worsening wrinkles and sagging.

This is where ergothioneine comes in. Its unique structure and transport mechanism allow it to target and protect the skin cells most affected by aging. It neutralizes ROS, protects mitochondrial integrity, reduces inflammation, and even supports the regeneration of other antioxidants in the skin—creating a synergistic defense against aging factors.

Key Research Studies: Does Ergothioneine Reverse Skin Aging?

1. Reversing UV-Induced Skin Damage (In Vitro Study)

A 2025 study published in Atlas of Science titled "Ergothioneine prevent UVA-induced skin damage through its potent antioxidant property" tested the effects of nanomolar concentrations of ergothioneine on human keratinocytes exposed to UVA radiation—a major cause of photoaging. The researchers found that pretreatment with ergothioneine reversed UVA-induced cell death, reduced ROS generation, and repaired DNA damage in the skin cells. It also prevented the loss of mitochondrial membrane potential and increased intracellular Glutathione levels, restoring the skin' s antioxidant balance.This study suggests that ergothioneine can reverse the damage caused by UV radiation—one of the biggest contributors to visible aging.

2. Improving Skin Aging Parameters in Human Clinical Trials

A 2025 randomized, double-blind, placebo-controlled trial published on medRxiv tested the effects of daily oral supplementation with ergothioneine on 66 healthy women aged 35-59 with signs of skin aging. The results were striking: compared to the placebo group, the ergothioneine group showed significant improvements in melanin reduction, reduced erythema, increased skin glossiness, improved elasticity, and fewer wrinkles and spots—all with a p-value < 0.01, meaning the results were statistically significant.

3. Protecting Collagen and Elastin (Preclinical Study)

A 2025 review published in PMC titled "Safe and Effective Antioxidant: The Biological Mechanism and Potential Pathways of Ergothioneine in the Skin" summarized preclinical studies showing that ergothioneine protects collagen and elastin from degradation. One study included in the review found that ergothioneine inhibits the activity of matrix metalloproteinases—enzymes that break down collagen and elastin in aging skin. By reducing MMP activity, ergothioneine helps preserve the skin' s structure, preventing wrinkles and sagging. The review also noted that ergothioneine inhibits melanin production by suppressing the activity of tyrosinase, which helps fade existing dark spots and even out skin tone.

4. Enhancing Skin Regeneration and Longevity

A 2026 study published in MDPI' s Molecules journal explored ergothioneine' s role in skin cell longevity and regeneration. The study found that ergothioneine accumulates in mitochondria, protecting these organelles from oxidative damage and improving their function. When mitochondria are healthy, skin cells have more energy to repair themselves and regenerate, leading to smoother, more youthful skin. The study also noted that ergothioneine can be efficiently extracted from mushroom by-products using advanced techniques, making it a sustainable and cost-effective ingredient for cosmetics.

Ergothioneine' s Unique Advantages in Anti-Aging Skincare

1. Targeted Cellular Protection

Unlike many antioxidants that are distributed evenly throughout the body, ergothioneine is selectively transported to cells via the OCTN1 transporter, focusing on areas with high oxidative stress. This targeted action means it is more efficient at protecting skin cells without wasting energy on cells that don' t need it.

2. Long-Lasting Antioxidant Activity

Most antioxidants are oxidized and consumed when they neutralize free radicals. Ergothioneine, however, is resistant to auto-oxidation and can be recycled in the body, providing continuous protection against ROS. This means it remains active in the skin for longer, offering sustained anti-aging benefits.

3. Synergistic Effects with Other Ingredients

Ergothioneine works well with other anti-aging ingredients, enhancing their effectiveness. For example, when combined with vitamin C or glutathione, it stabilizes these antioxidants and boosts their ability to neutralize free radicals. It also complements retinol by reducing the irritation often associated with retinol use, making it suitable for sensitive skin.

4. Safe and Gentle for All Skin Types

Clinical studies have shown that ergothioneine is safe and well-tolerated, with no adverse effects even at high concentrations. It is non-irritating, making it suitable for sensitive skin, including skin prone to redness, acne, or rosacea. It is also approved by the European Food Safety Authority (EFSA) and the U.S. Food and Drug Administration (FDA) for use in consumer products, confirming its safety.

Ergothioneine in the Cosmetics Industry: Current Applications

1. Anti-Aging Serums and Creams

The most common application of ergothioneine is in anti-aging serums and creams. These products are formulated to deliver high concentrations of ergothioneine directly to the skin, targeting wrinkles, dark spots, and dullness.

2. Sun Care Products

Given its ability to protect against UV-induced damage, ergothioneine is also used in sunscreens and after-sun products. It complements the UV filters in sunscreens by neutralizing the ROS generated by UV radiation, preventing photoaging and reducing the risk of sunburn. After-sun products containing ergothioneine help repair UV-damaged skin, reducing redness and inflammation.

3. Brightening Products

Ergothioneine' s ability to inhibit melanin production makes it a key ingredient in brightening serums, toners, and masks. These products target dark spots, hyperpigmentation, and uneven skin tone, resulting in a more radiant, even complexion. Unlike some brightening ingredients (such as hydroquinone), ergothioneine is gentle and does not cause irritation, making it suitable for long-term use.

4. Sensitive Skin Products

Due to its gentle nature, ergothioneine is often included in products designed for sensitive skin. It reduces inflammation and soothes irritated skin, making it ideal for products targeting rosacea, eczema, or post-procedure skin (such as after laser or microneedling treatments). It also helps strengthen the skin' s barrier function, reducing sensitivity to environmental triggers.

Conclusion: Can Ergothioneine Really Reverse Skin Aging?

Ergothioneine cannot completely "reverse" skin aging in the literal sense, but it can significantly reverse many of the visible signs of aging caused by oxidative stress and UV damage. Studies show it can fade dark spots, reduce wrinkles, improve skin elasticity, and restore a radiant complexion—all by protecting skin cells, neutralizing free radicals, and supporting cellular regeneration.

As with any anti-aging ingredient, consistency is key. Using products containing ergothioneine regularly, along with a healthy lifestyle, will yield the best results. With ongoing research and advancements in formulation technology, ergothioneine is set to become a game-changer in the fight against skin aging.

Name: Yuki
E-mail: sales02@nahanutri.com
WhatsApp：+8618066950297