How I Fixed Frizzy Hair After a Keratin Treatment Without a Full Redo

Last month I had a smoothing client come back after her first wash saying the keratin treatment "didn't take." In the chair it was not a total failure. The crown and mid-shaft had shine, but the hairline and nape puffed up as soon as I misted them. If I had promised a full redo right away, I probably would have over-processed the areas that were already sealed. I started with the boring checks…