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The 1st Customized Skincare System that Adapts to YOUR Changing Needs


INCI: Ergothioneine

What is Ergothioneine?

Ergothioneine is an amino acid with a thiol/thione group. It is usually synthesized by some fungi and bacteria. Also, it is found in many nuts, legumes, green leaves, mushrooms, and seafood. It is located in mushrooms in higher concentration than any other source. It is a metabolite of glutathione as well. It is usually white crystalline solid, but also comes as a tasteless, colorless solution form.

Use & Benefits:

Because of its structural specialty of a Sulphur atom, it is a stable and powerful antioxidant. It not only prevents oxidation but also a free radical scavenger, especially -OH radical. Any antioxidant serves a dual purpose in the formula, firstly, it prevents skin’s degeneration by climatic factors such as pollution, harmful UV rays, exposure to chemical fumes, etc. By preventing important fatty acids or such molecules of skin, it helps retain their reservoir for skin longer, which in turn prevents skin from becoming prematurely aged. As a result, the appearance of fine lines, wrinkles, or sagging can be avoided. Secondly, it stabilizes the formulation in which it is being used. It prevents the otherwise detrimental effects of oxygen to the product such as discoloration, separation, foul smell, etc. It is used in antiaging products i.e. creams and serums.

How to create your own Personalized Skincare with Lesielle?

Icons of the lesielle custom skin care system

Step 1: Select a nourishing base compatible with your skin, and your desired moisturization level

Step 2: Complete your treatment with up to four active ingredients for consistent and occasional use.

Step 3: Insert your base and up to four actives ingredients into your Lesielle device to produce a fresh single dose of face cream on demand when you need it.

Complete your routine with a cleanser and other complimentary products and accessories.


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The skincare system for an ever evolving skin, using recognized active ingredients with scientifically proven efficacy to create treatment tailored to each day's State of Skin. 

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