Brazilian Blowout in Singapore's Monsoon: Before and After Review

When the skies opened up over Singapore last November, my hair had already given up. Frizz had taken permanent residence at my crown, my fringe stuck to my forehead within minutes of stepping outside, and I was blow-drying for almost forty minutes every morning just to look presentable for my commute to Raffles Place. The monsoon season here is no joke - it makes the humid arvos in Brisbane feel like a dry heat in the Pilbara. I had been umming and ahing about a Brazilian Blowout for nearly a year, and the constant humidity was the final push I needed to book in.

For anyone unfamiliar, a Brazilian Blowout is a semi-permanent hair smoothing treatment that uses a liquid keratin formula to seal the hair cuticle, reduce frizz, and cut down blow-dry time dramatically. It is not the same as a traditional Japanese hair straightening or a standard keratin treatment, and the difference matters when you live somewhere with 80 to 90 percent humidity for months on end. I had read plenty of hair reviews online, but most of them came from dry climates, so I wanted to document the experience honestly in the kind of weather that would truly test the treatment.

This is a personal, non-sponsored record of the process, the immediate results, the four-week check-in, and what I would tell anyone considering it - whether you are based in Singapore, planning a trip, or just curious how it holds up against the relentless wet season.

Understanding the Brazilian Blowout and How It Stacks Up

The Brazilian Blowout brand itself is a professional in-salon treatment that typically takes between 60 and 90 minutes depending on hair length and thickness. A stylist applies the solution, blow-dries the hair, flat-irons it in small sections, and then rinses it out before a final blow-dry. The big selling point is that you can wash your hair the same day or the next morning, unlike older formaldehyde-heavy keratin treatments that required three or four days of waiting. For someone who is time-poor - and most of us in Singapore are, between work, dinner plans and weekend hikes up at MacRitchie - that is a genuine plus.

The active ingredients vary by salon, but most modern formulas rely on a blend of keratin, amino acids, and mild preservatives rather than the harsh chemicals that gave older treatments a bad name. The effect lasts anywhere from 10 to 16 weeks depending on how often you wash, your hair type, and how well you maintain it. I paid SGD 280 at a mid-range salon in Orchard, which works out to roughly AUD 315 - cheaper than most Brazilian Blowouts I have seen quoted in Sydney or Melbourne, where you can easily fork out AUD 450 to AUD 600 at a decent city salon like those in the QVB or Chadstone.

The numbers above reflect what I was quoted across three different salons during my research. The Japanese option was tempting for longevity, but the 72-hour wait was a deal-breaker when I had meetings booked. The Brazilian Blowout offered the best balance of results, convenience, and price for my circumstances, and the fact that I could wash my hair that night made it the only realistic choice for my schedule.

Choosing a Salon and Sitting Through the Procedure

I ended up booking at a small, well-reviewed studio near Somerset after a friend raved about her experience. The consultation was thorough - the stylist checked my hair porosity, asked about my washing frequency, and warned me honestly that very fine hair sometimes does not hold the treatment as long as thicker textures. She also asked about my usual styling routine, including whether I used anything from Mecca, Sephora, or Priceline that contained sulphates, which would strip the treatment faster. It felt more like a hairdresser in Surry Hills than a transactional chain, and that put me at ease.

The application itself started with a clarifying shampoo to remove any product build-up, which honestly felt like washing my hair with dishwashing liquid - my strands squeaked. The solution was then applied section by section, and the smell was noticeable but not overpowering. Compared to older keratin treatments I had read about, this was far milder. I did not get a headache, my eyes did not water, and I was able to chat normally with the stylist throughout. The flat-iron step took about 25 minutes, with the iron set to around 230 degrees Celsius. I have been to salons where the iron is cranked up to 240 or higher, so this felt considerate of my already heat-damaged ends.

The whole process took just over an hour and a half, and I walked out with hair that felt like silk - genuinely unlike anything I had experienced before. The stylist finished with a sulphate-free shampoo and conditioner from the salon range, gave me a printed aftercare sheet, and sent me on my way with a small travel-sized bottle of their recommended shampoo. The total bill came in slightly under my SGD 280 estimate because she skipped a step she felt my hair did not need, which I appreciated.

My Hair Before the Treatment

To give the before and after some real context, my hair situation was a mixed bag. I have medium-density, shoulder-length hair with a natural wave that sits somewhere between a 2B and 2C curl pattern. The ends were bleached twice in the past year - once for a balayage and once for a slightly brighter money piece - which left them dry and prone to snapping. On a good day in air-conditioning, my hair behaved. On a humid day in Singapore, or worse, a wet day, it turned into a triangular halo that no amount of smoothing serum could tame.

My usual routine involved washing every two to three days, using a sulphate-free shampoo, and finishing with either a leave-in conditioner or a light hair oil on the ends. I blow-dried with a round brush about four times a week and let it air-dry the rest of the time, which was usually a mistake. I had tried everything from the Bondi Boost products everyone raves about at Priceline to a pricey Aesop conditioner that did very little for the frizz. I was not looking for poker-straight hair - I wanted my waves back, just less chaos.

The first photo in my before-and-after series showed me standing outside my office at Raffles Place during a sudden afternoon shower, and my fringe was plastered to my forehead, the rest of my hair had tripled in volume, and I looked like I had been in a wind tunnel. That was the baseline I was working from, and it is the kind of humidity snap that every Brisbane local knows only too well.

The First Two Weeks: Monsoon Humidity Put to the Test

Singapore's monsoon in late 2024 was particularly aggressive, with the Meteorological Service Singapore recording several days of continuous rain and humidity levels regularly sitting between 85 and 95 percent. In other words, ideal testing conditions. The first morning after my treatment, I washed my hair with the salon-provided shampoo, let it air-dry completely, and then took a photo. The waves were still there, but they were defined and soft rather than frizzy and fuzzy. The shine was visible even in my poorly lit bathroom.

Over the next fourteen days, I put the treatment through its paces. I commuted to Raffles Place on the MRT in peak humidity. I attended an outdoor hawker centre dinner that got caught in a sudden downpour - I did not have an umbrella and had to walk 200 metres in the rain. I went to a yoga class that left me dripping with sweat. Through all of it, my hair dried back to its smoothed state within an hour or so, with only minimal puffiness at the roots. For context, the same scenarios would have left me with a frizz halo within ten minutes before the treatment.

I did notice a slight change after day ten, when the very crown of my head started to lose some of the smoothing. This is apparently normal - the crown gets the most handling, the most oil from your scalp, and the most friction from pillows and hats. By day fourteen, the rest of my hair still felt soft and looked glossy, but the roots needed a touch of styling on humid mornings. I have friends in Darwin who deal with year-round humidity, and they told me this was typical - no treatment is immune to that kind of moisture in the air.

The One-Month Mark and an Honest Verdict

I am writing this at the four-week mark, which puts me roughly a third of the way through the expected lifespan of the treatment. The good news is that the ends still feel like silk, the colour from my balayage looks more even than it has in months (probably because the smoothing has reduced the porosity that was making the colour look patchy), and my morning routine has been cut down to about ten minutes. I wash, I add a small amount of argan oil to the ends, and I am out the door. No blow-dry needed on most days, which is unheard of for me in this climate.

The less good news is that the crown is reverting faster than I would like, and I can see the wave pattern starting to return in a soft halo around my face. It is not the triangle of doom I had before, but it is noticeable to me, even if my colleagues have not picked up on it. I am planning to book a follow-up toner treatment at the six-week mark, which the salon offered at a reduced rate, to extend the life of the smoothing. I will keep updating my notes as it progresses.

Would I recommend a Brazilian Blowout in monsoon season? Yes, with caveats. If you are after completely straight hair, this is not the treatment for you - look at Japanese straightening instead. If you want softer waves, dramatically less frizz, and a real reduction in styling time, it is hard to beat. The first two weeks felt genuinely transformative, and even now, a month in, my hair is in better shape than it was before I started. You can find more honest, non-sponsored takes over on my hair reviews page, where I keep a running list of everything I have tried.

Cost, Upkeep, and Whether It Is Worth the Spend

The financial side of things is worth breaking down properly. At SGD 280 (around AUD 315), the treatment is a meaningful expense, but when I spread it across the 12 to 16 weeks it should last, it works out to roughly AUD 20 to AUD 25 per week - less than a couple of flat whites from my local cafe, and certainly cheaper than the cumulative cost of all the anti-frizz products I had been buying at Chemist Warehouse and Priceline. The savings on electricity from not blow-drying every day are a small bonus, and my hair feels healthier, which reduces the need for regular trims to fix split ends.

Upkeep is straightforward: sulphate-free shampoo and conditioner, minimal heat styling, and a once-a-week deep conditioning mask. I bought the recommended products from the salon, but the chemist equivalent from Alpha-H or even the supermarket dupe that some of my friends swear by would work just as well. Swimming in chlorinated pools shortens the life of the treatment, so I have skipped my usual laps at the public pool for now. If you are someone who hits the beach every weekend in Bondi or Surfers Paradise, factor in that you may get closer to 10 weeks than 16.

If you are on the fence, book a consultation first, ask the stylist about their specific formula, and be honest about your hair history. A good salon will talk you out of it if your hair is too damaged. For those curious about how I handle other beauty challenges in Singapore's humidity, I wrote a separate piece about my 30-day waterproof makeup test that might be useful reading too.

If you are in Singapore and weighing up a Brazilian Blowout, send me your hair type and routine on socials and I will do my best to give you an honest take. I will also keep updating this post over the coming months as the treatment gradually washes out, so bookmark the page if you want to follow the full journey through the rest of the wet season.