Photo Credit: By Вальдемар On Pexels. CC0 License Japanese Hair Straightening, also known as Thermal Reconditioning, is one very popular hair straightening technique you just might want to think twice about before having done. Originating in Japan in the late ’90s. The treatment can take anywhere from 3 to 6 hours and involves numerous steps with costs ranging from $300 to $1,500 depending on the salon. A…