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Hair botox vs straightening: what's the difference?

Two treatments, two goals — how to choose in salon

Rédaction ULTRALISS· Équipe éditoriale experte 15 July 2026 6 min read
Hair botox vs straightening: what's the difference? — illustration article Blog ULTRALISS
Key takeaways

Hair botox repairs the fiber without straightening, Brazilian straightening alters the shape. They are complementary and can be combined 15 days apart.

Contents (5)

Two treatments, two approaches

Hair botox is a reconstructive treatment with no permanent straightening effect: it fills the hair fiber with amino acids, hyaluronic acid, and ceramides. Straightening, on the other hand, alters the shape of the hair.

Compared composition

Botox: amino acids, collagen, vegetable oils, formaldehyde-free. Brazilian straightening: hydrolyzed keratin, thermo-activated straightening agents.

Expected result

  • Botox: repaired, shiny hair, curl preserved
  • Straightening: straight hair or very relaxed curl

Can they be combined?

Yes — a botox 15 days before a straightening treatment prepares and strengthens the fiber.

Average salon price

Botox: €90 to €180. Brazilian straightening: €180 to €400 depending on length.

Frequently asked questions

Rédaction ULTRALISS

Équipe éditoriale experte

L'équipe éditoriale d'ULTRALISS réunit coiffeurs experts, formateurs et rédacteurs spécialisés dans les soins capillaires professionnels pour cheveux texturés.

Coiffeurs certifiés
Formateurs ULTRALISS Academy
15+ ans d'expérience
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