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Most Hairstylists are uneducated, never ask the right questions, are generally lazy, they believe what the salespeople tell them. So please don't blindly trust your stylist ask questions, do research, be a smart consumer.

Me in Brazil doing my research! BKT is basically a service done by the low end salons in Brazil. The nice salons don't touch BKT. as they say in Brazil "es muito mal"