Keratin Complex NKST
in Boston.

I'm Franny Flynn, and smoothing treatments are the only thing I do at Brazilian Blowout Boston in Quincy, MA. After more than 10,000 treatments since 2009, I know exactly which systems work for which hair types. Keratin Complex NKST is one I reach for regularly.

Keratin Complex NKST is a professional-grade keratin smoothing treatment. It reduces frizz, adds shine, and makes your hair significantly easier to manage and style, and if you want to know exactly how it works, what the 72-hour rule is actually about, and whether it's right for your hair, you're in the right place.

What Keratin Complex NKST actually is.

It's a strong choice if you're dealing with frizz that gets worse every time Boston decides to be humid, hair that takes too long to blow-dry, texture that feels rough or unpredictable, or a general sense that your hair is fighting you every morning.

Results last up to 5 months, depending on your hair type, how often you wash, and how you maintain it.

Why keratin treatments sometimes disappoint.

Not all keratin treatments are the same, and not all salons treat them the same way.

Results depend on whether your stylist actually assessed your hair beforehand and clearly explained what results would look like for your specific hair. A fine-haired client and a thick curly-haired client getting the same treatment should not be told to expect the same outcome. When those things get skipped, you end up with results that don't last or don't match what you expected.

Internal vs. coating-based treatments.

This is the part most salons skip, and it's actually really useful to understand.

Some keratin treatments work primarily inside the hair shaft. They can be lighter and more subtle or stronger and long-lasting. We offer a lighter, more subtle approach with our internal-based treatment. If you're curious about how that approach works, read about Keratin Revolution.

Keratin Complex NKST is coating-based. The keratin wraps around the hair strand, seals the cuticle, and that's what gives the big improvements in frizz control, shine, and daily manageability. It's also why the 72-hour rule matters: the coating needs time to fully set.

Neither approach is better. They're just different tools for different hair.

The 72-hour no-wash rule.

NKST has a 72-hour no-wash policy. This is non-negotiable, and it's also the thing that makes it work.

Yes, 72 hours. Yes, it's a commitment. No, you can't just wash it once quickly.

If your hair accidentally gets wet, rain, humidity, a rogue splash, dry it fully and go over it with a flat iron. You'll be fine.

This curing window is part of why NKST lasts as long as it does. The clients who follow it carefully consistently get better results.

What to expect from the results.

Keratin Complex NKST will give you smoother texture, reduced frizz, easier blow-drying, added shine, and hair that just behaves. This treatment focuses on improving texture and manageability rather than dramatic curl reduction. We talk through this before we start so you know exactly what to expect.

Keratin Complex vs. Brazilian Blowout.

Here's the clear comparison clients ask for most.

That's the difference. If you want to go deeper on how Brazilian Blowout works, read the full guide.

Color-treated hair and timing.

Yes. Keratin Complex NKST is safe for color-treated hair. Timing matters, and the order of services is important.

• Highlights, balayage, or any bleach services should be done first.
• Single-process color should be done after the keratin treatment to balance out a slight color shift that may occur.
• We'll plan the order during consultation so results stay consistent.

Appointment length and pricing.

Plan for 2.5 - 4 hours depending on hair length, density, and texture. NKST is never rushed, technique and timing matter.

Pricing generally ranges from $350 to $600+, based on hair length and density. Final pricing is always confirmed before the service begins.