I don't understand how to choose the right color number for liquid foundation.

Dear Maybelline, the most full-color liquid foundation in history, 8 colors can satisfy all skin colors, and the light texture makes the skin radiant without burden. When applied to the back of the hand, it is easy to push it away, and the concealer effect is equally remarkable. It can easily deal with small flaws and large pores. Sensitive skin can also be used with confidence. P0—B0—O1—Po1—PO3—B2—B3—O3 (from light to dark) P0: Pink No.0, the whitest color is suitable for skin color, and pink and pale create a pink color makeup BO0: Natural healthy color No.0 is suitable for makeup with white skin color or want to be white, and MM makeup feels very white. Brighten skin tone po 1: pink natural color number 1 Suitable for skin tone, popular color and makeup No.3: Natural concealer B2 suitable for natural skin tone or slightly yellowish healthy color No.2: Healthy natural makeup B3 suitable for yellow skin tone No.3: Healthy natural wheat makeup O3 natural color suitable for dark skin tone and dull skin tone No.3: For the darkest color, it is suitable for facial shadow or tanning style. Please go directly to the official flagship store in maybelline new york to get more discounts. PS: To buy genuine products, please log in directly to the official flagship store in maybelline new york, or the online store authorized by Maybelline (Jumeiyoupin) to get more discounts, or you can go to the counters in major cities and choose the products you want. thank you very much for your support！ I hope the opinions can be adopted.