I love Mr. Kim! I was so scared to digiperm my hair for the first time ever...or to really just do anything with my hair because I'm obsessed with healthy smooth hair, but honestly this was the best decision I've ever made, hair-wise haha. I repermed my hair after about 6 months, because my hair is naturally super straight. My hair felt slightly dry at first which was suspected due to the chemicals, but after a week or two it was back to it's normal smooth silky self :)! I also washed my hair every day, so maybe for those who do the "every other day washing" routine, it may last longer than 6 months before you are just left with waves instead of bouncy curls. Mr. Kim advised me to blow-dry and twist with your fingers to give it that curling iron curl look...but I personally do not like blow-drying unless really necessary. I simply combed through my hair with my fingers in the shower or a large tooth comb and scrunched it while air-drying. Definitely the only salon I will go to for digital perming.