Choosing the best hair color for medium skin tone can be a daunting task, but there are many options to choose from. Here are some of the best hair colors for medium skin tone, along with their positive and negative aspects, ingredients, and materials:

1. Dark Brown with Blonde Highlights: This hair color is a great option for medium skin tone as it adds dimension and contrast to the hair. It is also low maintenance and easy to maintain. However, it can be damaging to the hair if not done properly.

2. Caramel: This hair color is a warm and rich shade that complements medium skin tone. It is also a low maintenance color that is easy to maintain. However, it can fade quickly if not properly cared for.

3. Mocha: This hair color is a great option for medium skin tone as it adds depth and dimension to the hair. It is also a low maintenance color that is easy to maintain. However, it can be damaging to the hair if not done properly.

4. Warm Blonde: This hair color is a great option for medium skin tone as it adds warmth and brightness to the hair. It is also a low maintenance color that is easy to maintain. However, it can be damaging to the hair if not done properly.

5. Bronde: This hair color is a combination of brown and blonde and is a great option for medium skin tone as it adds dimension and contrast to the hair. It is also a low maintenance color that is easy to maintain. However, it can be damaging to the hair if not done properly.

6. Silver: This hair color is a trendy option for medium skin tone as it adds a cool and edgy vibe to the hair. It is also a low maintenance color that is easy to maintain. However, it can be damaging to the hair if not done properly.

7. Eggplant: This hair color is a bold and vibrant option for medium skin tone as it adds a pop of color to the hair. It is also a low maintenance color that is easy to maintain. However, it can be damaging to the hair if not done properly.

8. Dark to Light Blonde: This hair color is a great option for medium skin tone as it adds brightness and dimension to the hair. It is also a low maintenance color that is easy to maintain. However, it can be damaging to the hair if not done properly.

When choosing a hair color for medium skin tone, it is important to consider the ingredients and materials used in the hair dye. Look for hair dyes that are free of harsh chemicals and contain natural ingredients like henna, indigo, and amla. It is also important to do a patch test before applying the hair dye to ensure that you are not allergic to any of the ingredients.

In conclusion, the best hair color for medium skin tone depends on personal preference and style. It is important to consider the positive and negative aspects of each hair color, as well as the ingredients and materials used in the hair dye, before making a decision.