Keratin vs Hair Botox vs Nanoplasty: How to Choose

A woman with smooth, healthy hair after a salon smoothing treatment
Photo by Pablo Merchán Montes on Unsplash

Quick answer

Choose keratin if your goal is long-lasting frizz control and smoothing. Choose hair botox if your hair is damaged and needs deep repair and hydration. Choose nanoplasty if you want a genuinely straight, formaldehyde-free finish — especially on curly or Afro hair. All three reduce frizz; they differ mainly in how much they straighten and how much they repair.

Keratin, hair botox and nanoplasty are the three treatments people ask us about most — and they're constantly confused with one another. They overlap (all three leave hair smoother and shinier), but they solve different problems. Here's how to tell which one your hair actually needs.

The one-line difference

  • Keratin — smooths and de-frizzes. Best for managing frizzy, wavy or coloured hair.
  • Hair botox — repairs and hydrates. Best for damaged, dry, over-processed hair.
  • Nanoplasty — straightens, gently. Best for a sleek, formaldehyde-free finish, especially on curly or Afro hair.

Side-by-side comparison

Keratin Hair botox Nanoplasty
Main job Smooth + cut frizz Deep repair + hydrate Straighten + smooth
Best for Frizzy, wavy, coloured hair Damaged, dry, dull hair Curly/Afro hair; sleek finish
Straightening Relaxes, keeps movement Minimal Strongest of the three
Repair Some Most Some
Lasts 3–6 months 2–4 months 3–6 months
Formaldehyde-free? Yes (at OK Beauty) Yes Yes — by design
From (Belfast) £85 £75 £120
A woman with long, smooth, healthy hair after a salon treatment
Photo by Ivan Lapyrin on Unsplash

How to choose, by goal

"I just want my frizz gone." Go for keratin. It's the classic anti-frizz smoothing treatment and keeps natural movement — a longer-lasting blow-dry. New to it? Start with what a keratin treatment is.

"My hair feels fried and straw-like." Your hair needs repair before smoothing. Hair botox rebuilds and rehydrates damaged strands; for severe damage, a reconstruction treatment first is ideal.

"I want it properly straight, and I have curly or Afro hair." Nanoplasty gives the smoothest, most natural straight finish and is formaldehyde-free, which makes it a popular modern alternative to old-style Brazilian smoothing.

What about safety?

All three are safe when a formaldehyde-free product is used. The old safety worries about smoothing treatments come from formaldehyde-releasing formulas, which some products still contain (FDA). We use formaldehyde-free products across all three — read more in is a keratin treatment safe?

Cost

Prices depend on hair length and the treatment. At OK Beauty Hair, hair botox starts from £75, keratin from £85 and nanoplasty from £120 — see the full price list.

Still not sure?

That's normal — the right choice depends on your hair's condition and your goal. Book a consultation in Belfast or Carrickfergus and we'll recommend the treatment (or combination) that suits your hair best.

Sources

  1. U.S. FDA — Hair Smoothing Products That Could Release Formaldehyde

Frequently asked questions

Which lasts the longest?

Keratin and nanoplasty typically last 3–6 months; hair botox lasts around 2–4 months because it's a repair treatment rather than a sealant. Aftercare makes a big difference for all three.

Which is best for very curly or Afro hair?

Nanoplasty tends to give the smoothest, most natural result on curly and Afro-textured hair and is formaldehyde-free. It's priced individually for these hair types.

Which is the safest?

All three are safe when formaldehyde-free products are used. Nanoplasty is formaldehyde-free by design; at OK Beauty Hair our keratin and hair botox are formaldehyde-free too.

Can I combine them?

Yes — many clients have a reconstruction or hair botox treatment to repair the hair, then a keratin or nanoplasty service to smooth it. We'll advise the right order at your consultation.

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