A bond-building primer that saturates dry hair with active repair before Nº.3 Hair Perfector — the step that takes the weekly treatment from good to genuinely intensive.
What It Is
Nº.0 is applied to dry hair as the first step before Nº.3, doubling down on the bond repair that Nº.3 alone delivers. The formula is lightweight and absorbs into dry hair quickly, priming the structure so that Nº.3 can work at a deeper level than it can without the primer step. For clients whose hair is heavily processed, bleached or showing significant damage, Nº.0 + Nº.3 together is the at-home repair protocol, not just the shampoo and conditioner.
OLAPLEX pioneered the bond-building category. Before it existed, there was no at-home option for actually reconnecting broken disulfide bonds — the structural damage from bleaching, colour, heat and chemical services that causes brittleness, breakage and loss of elasticity. Nº.0 and Nº.3 together represent the most intensive version of that repair available for home use.
Why You’ll Love It
- Primes dry hair for deeper bond repair before Nº.3
- Intensifies the Nº.3 treatment result for heavily processed hair
- Applied to dry hair — no shower required for this step
- Absorbs quickly without dripping or feeling heavy
How To Use
- Apply to dry hair section by section until the hair is fully saturated.
- Leave on for 10 minutes.
- Without rinsing, apply Nº.3 Hair Perfector on top of the Nº.0.
- Leave Nº.3 on for a minimum of 10 additional minutes.
- Rinse thoroughly, then shampoo and condition as usual.
Moda Pro Tip
Do not rinse between Nº.0 and Nº.3 — the two are designed to be layered wet on wet. After applying Nº.0 for 10 minutes, apply Nº.3 directly over it. A shower cap between the two steps holds warmth and helps the actives penetrate more deeply in the same processing time.
Key Ingredients + Technology
OLAPLEX Bond Building Technology in a professional-grade primer treatment designed to pre-saturate dry hair for maximum Nº.3 efficacy.
Why Moda Carries This
OLAPLEX is carried at Moda because clients ask for it by name. It was the first brand to make bond repair available at home, and Nº.0 is the product that elevates the at-home treatment for clients whose hair genuinely needs it — heavily bleached, repeatedly colour-processed or chemically treated hair that a shampoo-and-conditioner routine alone cannot maintain.
Perfect For
- Heavily bleached or repeatedly lightened hair
- High-maintenance colour clients wanting stronger at-home repair
- Hair showing significant elasticity loss or brittleness
- Clients already using Nº.3 who want a more intensive result
