GL 'Russian' hair is a joke-I ordered it once just to see if it could be used at all. Verdict: No it can't be used, the color was a 16 and full of black hairs!!! Totally ridiculous. Beautyworks is not Russian hair for sure, it's colored in well though, the blondes have no darker hairs at all.
Tbh, I've never understood this obsession with reusing hair. Whenever I get hair extensions for myself I wear them for about 2.5 months before I find that all I want to do is chuck the hair in the bin and give my scalp a good scrub. It just gets gross after a while, and I'm talking extensions that cost £350+ for the hair alone, and top of the range products used.
When it comes to clients, the ones who want their hair extensions reused are the ones that will never come for maintenance as it might cost them some money to do so (shock, horror!) and wear them until every extension hangs from one single hair so that they get everything they can out of them, and then they want you to remove and refit, all at a cost of £20. Hair extensions are not a necessity but a luxury and if you can't afford them, then don't get them.