This is my friend and client from way back to LL Cool J days ..her hair is black. She is philipina. It took a while to make her look natural blond. The secret is that she her hair is now literally salt and pepper…80% white hair. The more white gray hairs you have the more natural your blond hair colors will look because it doesn’t have to fight the red pigment in your hair. The blacker your hair is the more red undertone pigment it will pull up when you go blond. Its not impossible to go from black to blond.. It takes about 6 months for the color to take nicely. You cannot be fickled and want it red one month, black the next then blond. You will have patches. Patience is a virtue when wanting the perfect color for you.