All of my resin pieces contain jewellery grade resin which is set in Sterling Silver. They are suitable for hair, ashes even just colour.
Below are my default colours which can be mixed to give a wide variety of colours and tones.
Note: unless you request a colour the resin will be clear.
Almost any hair works well in resin jewellery. The exception is white hair. Most hair that is white normally contains no pigment and therefore when it is added to resin it turns translucent.