Turning Back Time on Skin! Mio Ishii, Beauty Expert at 50, Celebrates Over 100,000 Copies Sold of Her Book 'Your Skin Will Change in One Week: An Adult's Guide to Beautiful Skin'

Mio Ishii, a popular beauty expert, recently celebrated her 50th birthday in June, drawing over 6,400 applicants for a birthday event. Her skincare guide, 'Your Skin Will Change in One Week: An Adult's Guide to Beautiful Skin,' published in April 2020 by Kodansha, has surpassed 100,000 copies in combined print and digital sales, making it an unprecedented long-selling hit in the beauty how-to genre.

At 50, Ishii maintains radiant, translucent skin free of spots, sagging, and visible pores. Her reliable skincare methods and stunning appearance have made her a sought-after figure in women's magazines, including 'VOCE.' Even celebrity Minami Tanaka has praised her, saying, 'I, too, was saved by Mio.' This book reveals the daily skincare fundamentals she practices without fail.

Surprisingly, Ishii shares, 'I was never complimented on my skin until my early 30s.' She used to heavily apply foundation to hide skin concerns. 'To remove that makeup, I scrubbed my face vigorously, which enlarged my pores, worsened dullness, and left my skin painfully dry,' Ishii recalls. The turning point came with the 'friction-free face wash' introduced in this book. Simply changing her face-washing technique led to visibly less dryness and improved radiance within a week.

The book details Ishii’s proven routines: 'friction-free cleansing,' hydration basics, pore care, 'skin ironing' for sagging, and facial muscle training. Since release, readers practicing the 'Ishii Method' have reported dramatic results: 'My breakouts vanished in just one week!' 'Redness faded and my skin tone brightened!' 'I no longer feel dryness!' 'The book only covers part of my routine,' Ishii says with a smile. 'Thanks to consistent facial exercises, my face is basically 'toned'! My skin stays firm at 50 thanks to skin ironing and facial workouts. You don’t need to do a lot—just do it every day. This book compiles those essential basics.'

To celebrate turning 50 and surpassing 100,000 copies sold, a special Amazon-exclusive bonus is now available!

Purchasers of the book on Amazon during the campaign period will receive a 14-page downloadable bonus featuring Mio Ishii’s latest recommended cosmetics. While the book already includes cosmetic recommendations, this updated list features new products released after publication. 'Cosmetic innovation in recent years has been incredible! I’ve carefully selected the latest favorites to maximize results when combined with the book’s methods. Please give them a try,' says Ishii.

▼ Campaign Details

Period: Until December 31, 2026 (Thursday)

Eligibility: All customers who purchase the print or e-book version on Amazon during the period

How to Receive: The digital bonus 'Mio Ishii’s Latest Recommended Cosmetics List' (14 pages) will be sent via email

Amazon Page Here

*This campaign may end without prior notice.

*This promotion applies to orders confirmed on Amazon.co.jp between July 3, 2026 (Friday) 00:00 and December 31, 2026 (Thursday) 23:59.

*The download bonus 'Mio Ishii’s Latest Recommended Cosmetics List' can be downloaded via a URL in a separate email sent after the product release date.

*Download deadline: Wednesday, March 31, 2027, 23:59.

【Book Overview】

Title: Your Skin Will Change in One Week: An Adult's Guide to Beautiful Skin

Author: Mio Ishii

Publisher: Kodansha

Release Date: April 10, 2020

Price: ¥1,485 (tax included)

ISBN: 9784065193907