Last updated November 9, 2026
These terms cover buying and using Grace Yoon's book, What Korean Women Know, a digital book (a PDF file) sold at graceyoonbooks.com by Senior Guide Books ("we", "us"). By buying or using it, you agree to these terms. Questions: [email protected].
A digital book only, and nothing is shipped. After you pay, you're taken to a download page with your book. You can come back to that page any time. It's one payment, with no subscription. We don't sell any skin-care products, and the book recommends types of products, not brands.
Stripe handles the checkout and payment, and Stripe's own terms apply to the payment. We never see your full card number. Sales tax is added at checkout where it applies, and prices are in US dollars. The sale price on the page lasts for a set time from your first visit; after that, the regular price applies.
If the book isn't what you hoped, write to us within 7 days of buying and we'll refund what you paid. You can keep the book. If a file won't open, write to us and we'll fix it or send it again.
The book is for your own household. Print as many copies as you like for yourself and your family. Please don't resell it, post it online, or share the file or the download page publicly. The text and design are copyright © 2026 Grace Yoon Books. Each photo belongs to its photographer and is used under the license printed on the book's photo credits page.
The book is general information about caring for your skin, hair and body. It isn't medical advice, and it isn't a substitute for your doctor, dermatologist or pharmacist. Skin and health differ from person to person, so no routine suits everyone, and the book doesn't promise or guarantee any result.
Before you follow it:
The book's facts were researched as of November 2026, from official health sources first. Rules for products and labels change, so check the current ones. Grace's tips and preferences are opinions. We have no ties to any company or product type mentioned in the book; product and company names belong to their owners, who haven't endorsed the book. In an emergency, call 911.
Grace Yoon is a character. Her stories are composites: names, places and details are changed or combined, and none of them describes a real case or a real person.
You use the book at your own risk. As far as the law allows, the book is provided as it is, with no warranties of any kind.
As far as the law allows, we aren't liable for any loss, damage, injury, reaction or cost that comes from using the book or relying on the information in it. Our total liability for anything to do with your purchase is limited to the amount you paid.
Nothing in these terms takes away any right you have under consumer law that can't be excluded.
We may update these terms, and the version that applies is the one on this page when you buy. We also improve the book from time to time, and your download page always has the latest edition.