After Years Of Avoiding Keratin, Will 'Hair Botox' Fix My Frizz?
I was worried it would ruin my natural texture...
The Beauty Ed®’s Note: After 27 years of testing beauty treatments, I have tried many that promise a quick fix. Some work, some don’t. Some are really expensive but worth it (Sofwave - I’m thinking of you) and some are just fueled by hype and headlines rather than results.
So when The Beauty Ed® was offered to test Gustav Fouche’s New Frizz Spritz Treatment, which some marketeers call ‘hair botox’, I was skeptical to see if it delivered. It promises to…
…soften frizz, restore moisture, and make the hair more manageable through heat and humidity.
Being someone with natural waves that are susceptible to frizz - especially because I now live in hot and humid Florida - I wanted to know which category this collagen-infused treatment fell into. Would it live up to the hype and the price tag? Or was it just a waste-of-time? And money?
As the salon is in London, I sent The Beauty Ed® Gen Z THE LAB mentee and fellow frizz-sufferer Gia to try it out. Here’s her honest review:
What Exactly is a ‘Hair Botox’ Treatment?
After the fabulous response to my last visit to Gustav Fouche’s Salon, where I experienced my first 3D dry cut, I returned this week to test the salon’s newest launch: Frizz Spritz, an in-salon de-frizzing treatment.
Positioned as a softer, curl-conscious alternative to keratin, the treatment immediately intrigued me because I have spent years being told to try straightening treatments, yet I have avoided them, fearing that they would compromise my natural texture.
What appealed here was the opposite promise: it is designed not to straighten hair, but to soften frizz, restore moisture, and make it more manageable through heat and humidity.
Frizz Spritz vs. Keratin: Why I Chose a Texture-Safe Alternative
With my annual Italy trip nearing and my hair notoriously reactive to even the faintest suggestion of moisture in the air, the timing was perfect!
Rather than behaving like a straightening service, Frizz Spritz works more as a collagen-infused reparative gloss, borrowing from the technology behind advanced hair botox treatments. The formula is designed to hydrate hair by replenishing lost amino acids, proteins, and moisture, which then help to improve its softness and control without removing the hair’s natural movement.
This is not a keratin treatment! And it’s important to note this is not a miracle cure for 100% of frizz either. Instead, it refines your overall hair texture so curls and waves sit more polished and look more shiny. It’s meant to really help lessen frizz in humid conditions too!
Results are said to last up to three months, which makes it especially appealing as a pre-holiday salon treatment before spring and summer travel.
Starting from £260, it firmly sits in luxury territory, but for hair that struggles with dryness and weather-induced frizz, it offers something far gentler than harsher smoothing alternatives.
Why I Wanted to Try It on My Own Hair
(the before)
My hair is naturally dry, dense, and deeply prone to frizz.
Years of heat styling, bleaching, and colour experimentation have left my curls permanently thirsty, and in humid weather, the situation escalates quickly. The slightest mist, breeze, or shift in temperature can turn it from defined to expansive within minutes.
I love masks and at-home treatments, but I had never tried an in-salon service specifically targeting frizz and hydration.
The Pro Tip: Why Your At-Home Products Might Be Blocking Your Results
The first step is a double detox cleanse, using a clarifying shampoo to strip away oil, residue, styling product, and anything that could block the treatment from penetrating properly.
This was one of the most useful takeaways from the appointment: even if you shampoo regularly, product build-up can still sit stubbornly on the scalp and lengths, especially if, like me, you rotate through oils, creams, leave-ins, and masks.
Once cleansed, the hair is rough-dried. At this point, I could already see my usual halo of frizz beginning to rise, which made the before-and-after contrast feel even more notable.
The Application: Why the Formula is “Violet-Blue”
The treatment itself has a striking violet-blue tone which I was quite shocked about! But after some research, I have learnt that the blue toning pigments help to ramp up the shine on dry, porous and frizzy hair like mine.
It is applied in meticulous small sections from root to end and then left to process for around 30 minutes before being rinsed out with water only. No shampoo nor conditioner follows.
The final stage is where the transformation really begins: a full blow-dry followed by straightening at high heat to seal the treatment into the hair and lock in the smoothing effect.
The Honest Verdict: Why You Might Want To Skip Mascara
One thing worth noting transparently: this is a strong professional treatment.
While nowhere near the intensity of keratin, I did find the formula made my eyes water during processing, and my mascara did not survive the experience entirely intact. That said, I’m unusually sensitive to strong scents and certain formulas, and the team were incredibly thoughtful, offering me a face covering and making sure I was comfortable throughout.
The sensation passed relatively quickly, and once the blow-dry began, all I could focus on was the shine at the root; it was almost lacquered.
The Humidity Test: Does it Work for Naturally Frizz-Prone Hair?
The full appointment lasted closer to three hours on my hair, rather than the suggested 90 minutes, but that extra time spoke more to the salon’s thoroughness and my hair’s length than anything else.
The immediate result was smoother, glossier, and noticeably more controlled hair, without that unnaturally flattened finish I had feared. Importantly, it still looked like my hair, just the most polished version of it yet.
The real test, of course, will come after my first natural wash and during humid weather, which is when my hair usually reveals the truth.
I’ve been advised to leave it untouched for three days before washing, so I’ll be updating on how the curls settle and whether the frizz remains controlled once the treatment has fully lived in.
For now, as a Notting Hill luxury salon treatment for dry, frizz-prone curls ahead of summer, it feels genuinely promising!
Looks fab, I want to try this! My curls definitely need it.