The silk skincare brand Itoguchi, under Kimono Brain Co., Ltd., launches its new line 'Itoguchi f' centered on proprietary 'fermented × green silkworm silk' technology, with the first product, the 'Midori-mayu Fermented Silk Booster,' launching on June 21, 2026.
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Frequently Asked Questions
Q: What is the first product of Itoguchi f?
A: The 'Midori-mayu Fermented Silk Booster,' a pre-serum for skincare enhancement.
Q: What is fermented silk?
A: It's a proprietary ingredient by Itoguchi, fermenting sericin from green silkworms with plant lactic acid bacteria.
Q: Where can I buy it?
A: Available on the official online store, Amazon, Loft stores, and Hankyu Umeda.
Q: When is it released?
A: June 21, 2026.
Q: What are the product's features?
A: A pre-serum that softens the stratum corneum and enhances skincare absorption, 99.7% natural, free from additives.