Comparison guide
Keratin treatment vs Brazilian blowout.
They both smooth hair. They both use heat. But they work differently, last different amounts of time, and have different safety profiles. Here is what actually matters.
Side-by-side comparison.
| Keratin Treatment (QIQI) | Brazilian Blowout | |
|---|---|---|
| How it works | Penetrates the hair shaft and restructures disulfide bonds under heat | Coats the hair externally with a smoothing solution sealed by heat |
| Results last | Up to 5 months | 10–12 weeks |
| Frizz control | Dramatic — bonds are restructured from within | Moderate — surface coating reduces frizz |
| Straightening effect | Can range from loose wave to fully straight depending on technique | Mild smoothing — does not straighten significantly |
| Downtime | 48–72 hours before first wash | No downtime — wash same day |
| Formaldehyde | QIQI is verified 0% formaldehyde and methylene glycol | Some products contain formaldehyde despite "formaldehyde-free" claims |
| Salon cost UK | £150–£350 | £150–£300 |
| At-home cost | £119 per pouch (3+ treatments = ~£40 each) | Not typically available for home use |
| Cost per month | ~£24/month (at home) | ~£100/month (salon only) |
| Best for | Lasting frizz elimination, straightening, long-term manageability | Quick smoothing with zero downtime |
How keratin treatment works.
A keratin treatment works by temporarily breaking and reforming the disulfide bonds inside the hair shaft. The treatment is applied to clean hair, processed under heat (either a heated cap or hairdryer), and then sealed with a flat iron at high temperature.
The bonds reset in a new, smoother configuration. Because the change happens inside the hair — not on the surface — the results last much longer. QIQI Hair Controller results last up to 5 months, with the hair gradually returning to its natural state as it grows out.
There are three QIQI formulas for different hair types: Thick & Coarse (for afro and resistant hair), Wavy & Curly (for natural waves and curls), and Thin & Delicate (for fine and colour-treated hair). Using the right formula is critical for best results.
How Brazilian blowout works.
A Brazilian Blowout is a specific branded treatment that coats the outside of the hair with a liquid keratin solution. The solution is blow-dried into the hair and sealed with a flat iron. The coating fills gaps in the cuticle and creates a smooth outer layer.
Because it works on the surface rather than restructuring internal bonds, the results are milder and shorter-lived. The coating gradually washes away over 10–12 weeks. The advantage is zero downtime — you can wash and style your hair immediately after treatment.
Brazilian Blowout is a single-product system with no hair-type-specific formulas. The same product is used on all hair types, with the stylist adjusting technique. This one-size-fits-all approach means results can vary significantly depending on your hair type.
The formaldehyde question.
In 2011, the US Occupational Safety and Health Administration (OSHA) found that some Brazilian Blowout products marketed as “formaldehyde-free” actually released formaldehyde when heated. This led to health alerts and lawsuits.
The issue is that some smoothing products contain methylene glycol — a chemical that converts to formaldehyde gas when heated with a flat iron. This is why “formaldehyde-free” on the label does not always mean the treatment is formaldehyde-free in practice.
QIQI Hair Controller contains zero formaldehyde and zero methylene glycol. It uses a cysteine-based formula that does not produce any aldehyde byproducts during heat processing. No fumes. No eye irritation. Safe for home use without specialist ventilation.
Which should you choose?
Choose keratin treatment if
- You want frizz gone for months, not weeks
- You want significant smoothing or straightening
- You want to reduce daily styling time dramatically
- You want to do it at home and save money
- You want a verified formaldehyde-free formula
Choose Brazilian blowout if
- You want mild smoothing only
- You cannot wait 48–72 hours before washing
- You prefer salon-only application
- You want to test smoothing with a shorter commitment
Keratin vs Brazilian blowout — FAQ
Is a Brazilian blowout a keratin treatment?
Not exactly. "Brazilian Blowout" is a specific brand name, while "keratin treatment" is a broader category. Both use heat to smooth hair, but they work differently. Brazilian Blowout coats the hair externally — keratin treatments like QIQI penetrate and restructure the bonds within the hair shaft. The results, duration, and chemistry are different.
Which lasts longer — keratin treatment or Brazilian blowout?
Keratin treatments last significantly longer. QIQI Hair Controller lasts up to 5 months. A Brazilian Blowout typically lasts 10–12 weeks before fading. Because keratin treatments restructure the internal bonds rather than just coating the surface, the results are more durable.
Which is safer — keratin treatment or Brazilian blowout?
It depends entirely on the specific product. Some Brazilian Blowout products have been cited for containing formaldehyde despite marketing claims. QIQI Hair Controller is independently verified formaldehyde-free and methylene glycol-free. Always check the specific product ingredients rather than relying on category labels.
Can I wash my hair the same day after a Brazilian blowout?
Yes — Brazilian Blowout is marketed as a "no downtime" treatment. With QIQI Hair Controller, you wait 48–72 hours before the first wash. This waiting period is necessary because the bonds are still setting. The longer initial wait is why keratin treatments deliver longer-lasting results.
Which is better for frizzy hair?
Both reduce frizz, but keratin treatments deliver more dramatic and longer-lasting frizz control. If your primary goal is eliminating frizz for months — rather than weeks — a keratin treatment is the better choice. Brazilian Blowout is better suited for people who want mild smoothing with no downtime.
Is a keratin treatment more expensive than a Brazilian blowout?
In a salon, both cost £150–£350 depending on hair length. But per month of results, keratin treatment is significantly cheaper. A £300 keratin treatment lasting 5 months = £60/month. A £250 Brazilian Blowout lasting 10 weeks = £100/month. At home with QIQI, the cost drops to about £24/month.
5 months of smooth. Not 10 weeks.
QIQI Hair Controller. Three formulas for every hair type. Free UK delivery over £80.