The at-home bond repair treatment that started the category — a weekly pre-wash treatment that reconnects broken disulfide bonds for stronger, healthier-looking hair between salon visits.
What It Is
Nº.3 is OLAPLEX’s original retail product and still the one most clients recognise by name. Applied to damp hair before shampooing, it works on the disulfide bonds that bleaching, colour, heat and chemical services break down over time. Most conditioners and treatments work on the surface of the hair. OLAPLEX Nº.3 works internally — it is not a conditioning treatment, it is a bond repair treatment that happens to also leave hair feeling softer.
Used consistently — once a week is the recommendation for most clients — the results build cumulatively. Hair that has been through repeated colour services, balayage or keratin treatments starts to hold its structure better between appointments. The elasticity that indicates a healthy hair fibre (stretch without snap) returns progressively over weeks of consistent use.
Why You’ll Love It
- Reconnects broken disulfide bonds caused by colour, bleach and heat
- Reduces breakage and visibly improves strength over time
- Works before shampoo — no changes to the rest of the routine
- Results build cumulatively with weekly use
How To Use
- Apply a generous amount to damp, towel-blotted hair.
- Leave on for a minimum of 10 minutes. For very damaged hair, leave on longer — up to 90 minutes is fine.
- Rinse out, then shampoo and condition as usual.
- Use weekly for ongoing repair and maintenance.
Moda Pro Tip
The longer Nº.3 is on the hair, the more opportunity the bond-building technology has to work. OLAPLEX confirms that leaving it on longer (up to 90 minutes) is fine and beneficial for very damaged hair. Put it on before a bath, before a workout, before a film — whatever gets you consistent weekly use is the right approach.
Key Ingredients + Technology
OLAPLEX patented Bond Building Technology (Bis-Aminopropyl Diglycol Dimaleate) — the active that works on disulfide bonds within the cortex of the hair, reconnecting bonds broken by chemical and heat damage.
Why Moda Carries This
OLAPLEX pioneered bond building and clients ask for it by name. Nº.3 is the product most of them come in knowing about — it is the foundation of the OLAPLEX retail range and the most impactful single product for clients maintaining colour or bleach at home.
Perfect For
- Colour-treated, bleached and chemically processed hair
- Hair showing breakage, brittleness or elasticity loss
- Weekly repair maintenance between colour appointments
- Clients who have never used a bond treatment before
