Captioning an Instagram pic of the 37-year-old's envy-inducing ombré hair, Josh wrote:
"One of our most frequently asked Q's: 'How do I get #Gisele's amazing hair colour?!' It's only highlights with 20 volume bleach - which she does 2 or 3 times a year, if I'm lucky! She's so low maintenance! There is no base break, etc. - Here is a #TB view of Gisele's hair in natural daylight, using all of our #harryjoshprotools!"
We don't know about you, but we'll be writing that magic formula down and thrusting it into our hairstylist's hands asap.