To purchase products on the American Jeunesse official website, you can follow the steps below:

1. Click to enter the American Jeunesse official website, select the product series you want to purchase, and click to enter.

2. Select the product name below and click the purchase button to enter, confirm the purchase quantity and put it in the shopping cart.

3. Return to the homepage of the website and enter checkout from My Shopping Cart at the top of the website.

4. Finally, settle the bill in US dollars by credit card.

The above steps are for your reference only. For specific operations, please refer to the Jeunesse official website.