Sometimes it can be challenging with a cool undertone such as pink because you have all ranges of this undertone. Light, medium and deep with cool undertones - When selecting a foundation for someone with a skin tone that has a pink undertone, it's important to consider both the undertone and the overtone of the skin. Pink undertones often suggest a cool complexion, and using a foundation with a neutral or golden undertone can help balance out the coolness and create a more harmonious look. Choosing the right foundation shade can indeed be a challenging task, but a professional approach involves considering both the undertone and overtone of the skin. Undertones are the subtle hues beneath the surface of the skin, such as pink, yellow, or neutral, while overtones are the surface tones that are more apparent. By selecting a foundation that matches the undertone of the skin while taking into account the overtone, you can create a seamless and natural-looking finish that complements the client's complexion. One effective method to determine the best foundation shade is to test different options by applying a small amount of product with both pink and neutral or golden undertones. By observing how each foundation blends with the skin and interacts with the client's natural undertones, you can identify the most suitable match that enhances their features and provides a flawless finish. Ultimately, understanding how undertones and overtones work together is essential in achieving a professional and personalized makeup look that enhances the client's natural beauty. By taking a thoughtful and informed approach to selecting foundation shades, you can ensure that your clients feel confident and radiant in their makeup application.