At a recent event for Kérastase Paris, we previewed their new Fusio-Dose In-Salon Treatments at Butterfly Studio Salon in New York City (click the first link to find a salon near you). The stylist starts the high-tech treatment by taking a 600 times magnified digital photo of your hair— scary, I know!— and uses the image to take a close look at your hair's health, identifying problem areas (when hair is healthy, strands will appear uniform in shade and diameter). Then, the stylist uses the information from the photo to mix a bespoke Fusio-Dose treatment, using a large dose of one concentrate to address your primary need and a smaller dose of another to address your secondary need: either Concentré Pixelist for colored hair, Concentré Oléo-Fusion for dry hair, Concentré Vita-Ciment for damaged hair, or Concentré Substantif for thinning hair. Below are the digital photos taken of my hair at the salon; pre-treatment (left) about half of my strands are dry (the dull brown areas), and post-treatment with the Concentré Oléo-Fusion for dry hair, they are almost uniformly hydrated and shiny. Tell us: Have you ever tried an in-salon hair treatment? If so, what was it and what did you think of the results?