Expiry dates for products without one

I know about PAO but what about products without an expiry date? I have products from Fresh and Ole Henrikson. Both do not have an expiry date, only the PAO. I usually keep track of all the expiry dates for my skincare products but most western brands don’t have one. How do you know when it will expire? Generally one year after buying it / manufacturing date? One reason why I love using K-beauty products is because they have the expiry dates. Easy to keep track 😬 ❣️❣️❣️UPDATES ❣️❣️❣️ Generally speaking, most UNOPENED products have a lifespan of up to 3 years unless mentioned otherwise. Been looking online for expiry dates using batch codes from the websites below. Not all brands can be found but common ones are available. I’ve also attached a table on general product shelf lifes before and after PAO for easy reference. I can’t remember where I saved it from so if it happens to be yours, let me know ☺️ https://m.checkcosmetic.net https://checkexp.com https://cosmetic.momoko.hk/en For Tata Harper products, it’s so awesome that you can search the manufacturing date from their website itself! Plus, they’ll even show you a picture of who packed your product! From FDA regarding American brands: There are no U.S. laws or regulations that require cosmetics to have specific shelf lives or have expiration dates on their labels. For European brands: Any cosmetic product that has a lifespan of less than 30 months must show a "Best before the end of" date. For products with a lifespan longer than 30 months, cosmetic products must show a "period after opening" time. Got the info from these pages: https://checkcosmetic.net/useful-links/ https://checkcosmetic.net/cosmetic-and-perfume-shelf-life-faq/