It is strongly recommended that you do not dye synthetic hair because the polymers are blended with various plastics and frankly the dye will not ‘stick’ to the fibre.
The beauty of synthetic hair is that it is low maintenance and will keep its style, but it really is not a good idea to attempt to dye it.
Can you style synthetic hair?
The best part about purchasing a synthetic wig is that it truly holds its style and often wigs are chosen for the style it has.
There are some fibres that can be styled but you will need to discuss this with your wig expert to understand the best option for you.