"Encyclopedia of Beautiful Skin Ingredients" Kazu no Suké / Minoru Shirano Price: ¥1600 This book is by YouTuber Kazu no Suké. It provides detailed information on cosmetic ingredients, including additives. It is recommended for those who love beauty, those who have skin problems, and those looking for basic skincare products that suit them. There is some dirt on the cover. Please check the images. I have only read the beginning, so the inside is clean.