Service Scout: Kérastase Fusio-Dose Treatment and Homelab Tuesday 20 November, 2012

Not only can you right the many wrongs you’ve done to your hair with Kérastase Fusio-Dose In-Salon Treatment, but you can continue the targeted care long after you leave the salon with the stylist-diagnosed Fusio-Dose Homelab. I take my dosage happily.

I can tick off the problems my hair has faster than I can list pretty much anything else. My list:

It’s fried from excessive bleaching.

It falls out in clumps.

It’s lost its luster due to all the heat-styling I put it through.

It seems extremely thin (though I am told otherwise).

The ends are always splitsville and/or breaking.

It never, ever grows. (Probably because it’s too busy breaking.)

My scalp is unusually dry and itchy and now…disgustingly…flaking (but only along the most obvious area: the hairline…for reals).

So when I meet Jill Guzzo, a treatment specialist at Butterfly Studio Salon in Manhattan, and she asks me about my hair issues, I run down my checklist of tress woes like they’re on speed dial. I’m visiting Jill to indulge in Kérastase Fusio-Dose In-Salon Treatment, a customized panacea that promises to rectify your specific strand afflictions. To begin the process, Jill asks me a battery of questions: Where do you apply your products? How much of said products do you apply? What, in fact, are you using? How often do you style your hair? How often do you heat-style? How often do you wash your hair? And even, how do you apply your conditioner?


(After my Kérastase Fusio-Dose In-Salon Treatment, my hair feels shiny and new…and looks shiny and new.)

I feel a little naked divulging all of my bad habits, but, like I said, I believe I know all that is wrong with my hair, and the answers to these questions flow off the tip of my tongue way too easily. After Jill diagnoses my hair hypochondria—a strange blend of growth issues coupled with dehydration proclamations—she sets about tailor-making my personal Fusio-Dose remedy: a “mono-dose“of Concentré Vita-Ciment for strength and a “booster” of Ionium for added moisture.

See, this is how Fusio-Dose works: Your stylist chooses one of four “mono-dose” concentrates—color, dryness, damage or thinning—to address your primary hair concern (mine is growth) and then chooses an added “booster” to target your secondary concern. (Boosters come in the same categories: color, dryness, damage and color.) Your stylist then treats you to a 20-minute treatment: wash, head message, 5-10 minutes of Fusio-Dose (depending on hair thickness), then rinse. During my 20 minutes, I lament all the hair woes I dredged up in our initial assessment. My newest strand snafu: my flaking scalp. “Coconut oil,” Jill says definitively. “You can get it at Trader Joe’s. It’s solid, so run it under hot water until it softens. Then, dab it only on the spots of concern. You don’t need a massive amount. Just a dab will do it.” She recommends I apply the oil 20 minutes before I shower or before bed to be worn overnight.


(My Fusio-Dose Homelab is customized to my exact needs: growth and moisture.)

Then we move on to how I’m applying my conditioner. “Make sure after you shampoo, but before you apply conditioner, to towel-dry your hair,” she says. Wait—really? “Yes. This allows your hair to absorb the maximum benefits of your conditioner. Your hair cuticle is too swollen with water to take in the conditioner’s benefits if you don’t towel-dry first,” she explains. Noted.

Then we chat about my bedraggled ends. “Definitely run your ends under cold water after you shower. Just dip them in the sink if you want,” Jill offers. This will seal the cuticle, at least giving the appearance that my ends are somewhat intact.

After my relaxing treatment (relaxing for me; probably not relaxing for Jill, who I drilled the entire time with questions), Jill prescribes me the new tailor-made Kérastase Fusio-Dose Homelab—a genius way for clients like myself to prolong their treatment results long after they leave the salon. Here’s how it works: After the in-salon treatment, your hairstylist prescribes a Homelab for you that contains three additional customized mini treatments (mono-dose concentrates plus boosters) to be performed at home on specific dates. You receive a box containing the treatments as well as the regimen, handwritten by your stylist, with dates and the corresponding doses and boosters to administer plus a date for a return visit to the salon. For someone like me, this is awesome. I tend to forget dates.


(The back panel of the Homelab kit features a place for your stylist to hand-write your prescription. Cool, ay?)

“The Homelab is perfect for people who don’t have the time to come in for monthly treatments. You just have to be willing to take the time at home,” Jill says. She walks me through how to do it: There’s a sophisticated cap/twist/shake/spray dance you have to do, which “fuses” the mono-dose concentrate with the booster. “After washing your hair, you’ll spray it on your mid-lengths to ends, avoiding your roots. Go section by section and rub in the liquid until your hair seems to de-tangle and you feel that your hair has ‘slip’,” she says. (P.S. “Slip” is an oft-used hairstylist term used when talking about how easily you can move through the hair. More ease = more slip.)


(Remember how I told you to “try before you buy into bangs” with clip-in fringe? The newest rage at salons is “Bang Bars” where you can do just that. Butterfly Studio Salon has one, and we had fun trying a blunt-cut bang on me. Doesn’t look half bad…but it’s not something I’d want permanently.)

Jill writes in my dates and doses, to be applied every two weeks, commencing on December 26. Right away, my hair feels amazingly healthy after my visit, though only time will tell regarding its growth. I’m hoping with a few more Homelabs, I’ll have a much shorter checklist of hair woes to tick off. One can hope, right?

To find a salon that offers Kérastase Fusio-Dose, visit To book a visit with extra-informative Jill at Butterfly Studio Salon, visit

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Karie L. Frost Signature




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  • rachel says:

    hi karie
    I loved your blog about the fusio dose by kerastase. I am trying to grow my hair faster and have it be thicker and less frayed on the ends plus help shedding. can you tell me if the kerastase worked for this? especially the growth part? I was considering have a salon fusio dose done. I hope to hear from ya. thanks so much!

  • admin says:

    Hi Rachel! I’ll be honest; I didn’t notice anything in the way of growth. I believe that I am particularly hard on my hair mechanically (brushing hard, wearing my hair up in a bun with an elastic that breaks my hair, etc.) and chemically (bleach) – but I am also genetically predisposed to not growing long hair. So with all of those factors in mind, I wasn’t expecting some big growth spurt.

    What I did notice was that the quality of my hair greatly improved. It felt softer, smoother – and it looked shinier. So – this treatment could feasibly help you with thickness and less fraying. But it would be a short-term fix.

    If you would like to grow your hair, the only product I’ve ever seen QUICK results with is Viviscal. May not work on everybody, but it worked on me.

    As for shedding – this could be genetic, hormonal, stress, a combo of all of those, or mechanical (wearing hair in tight ponytails or buns). We all tend to lose a good amount of hair daily, but if you notice it is A LOT-A LOT, pay a visit to your doctor. That is always the advice to be followed if something seems “off”!

    Anyway – lots of rambling, but in the end: The Fusio-Dose is a great treatment that will give you very immediate short-term results (shine, smootheness, less visible dead ends).

    Hope this helps!

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