Yes.
Processed human hair wigs. Most human hair is Indian or Asian. Asian hair typically will be used for the lightest colors because it can withstand the processing. Indian hair is usually Remy hair, which is a slower processing technique. It can have a natural wave and body to the hair.
European human hair wigs.  They are the natural cut color from the head, making it softer and silkier. It is typically from European heads. Once it has been processed, even if a shadow of a root color is added to make it look even more natural it’s now considered processed no longer making it true European hair.
Human hair can be styled with heat. Make sure to use a product that protects the hair creating a barrier between the hair and the heat. When coloring human hair, it is always easier to add color than subtract. Not all hair will lighten to any color we want. Most human hair has had some processing and can affect attempts to color it. European hair is easier to highlight and lowlight because the integrity of the hair is still completely intact.
Consider that purchasing a wig is an investment in yourself and how you look. It’s something you will most likely wear 10-12 hours per day. It’s important for you to feel comfortable in your hair as well as to know how to live in it so it becomes part of you.