1. Korean authentic sample wholesaler: You can search for "Korean authentic sample wholesaler" on relevant platforms or social media, and some information about the merchant or supplier will appear. According to the comprehensive factors such as the reputation, price and quality of the merchants, the suitable suppliers are finally selected.

2. Physical stores or businesses: In some physical stores or businesses in Korea, such as beauty shops and wholesale markets, there will be samples of cosmetics for sale. You can go to a physical store or a merchant to consult and buy.

3. Participate in beauty exhibitions or activities: In beauty exhibitions or activities in South Korea or China, a number of cosmetics manufacturers or suppliers usually get together to provide various trial samples or samples for visitors or participants. You can get samples of cosmetics by participating in these exhibitions or activities.

It should be noted that when selecting suppliers or commodities, the following points should be noted:

1. Confirm the reputation and quality of suppliers or commodities, and avoid buying fake and inferior products.

2. Know the market price and quotation, and avoid being confused by excessive price or unreasonable discount.

3. Check the detailed information and specifications of the goods to ensure that the goods meet their own needs and requirements.

4. Pay attention to the contract terms and transaction details when conducting wholesale transactions to ensure that your rights and interests are protected.