What the brand claims
In the brand’s own words, quoted as written.
“Prime your hair for deep repair with Nº.0 Intensive Bond Building Treatment, a salon-inspired pre-treatment designed to enhance the effectiveness of N°3 Hair Perfector™. Its highly concentrated formula works to rebuild disulfide bonds, targeting more severe damage and delivering immediate strength when used in combination with N°3.”
Quoted from the Olaplex product page
We quote these claims without judging them here — the verdict above weighs them against the evidence further down this page.
Ingredients4 ingredients
The full INCI list, as published by the brand.
Where to buy
What we've checked so far
We publish what we have while the assessment is still queued, and we're upfront about what's missing.
What we looked at
- Full INCI list, cross-checked against the brand's published formula.
- 90-day price history across 1 retailers, excluding shipping.
What we did not look at
- Our formula assessment — queued, not yet run.
- Shipping costs — not yet in all retailer feeds.
- Corol community reviews — none submitted yet.
What buyers say elsewhere
No external ratings indexed yet, and Corol community reviews haven't started.
Corol community reviews open here — be the first.