Reishi (Ganoderma lucidim), cordyceps (Cordyceps militaris), and lion's mane (Heracium erinaceus) are being incorporated into cosmetics for their anti-aging and skin-brightening properties, like reducing inflammation and promoting collagen production. A South Korean study of 28 mushroom species found ergothioneine levels ranging from 0.06 to 5.54 mg/g dry weight, with some species containing up to 10.65 mg/g. Research suggests mushroom extracts can potentially reduce hyperpigmentation, while also providing hydration and supporting overall skin health.