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Hair Treatment · Leave-In Treatment
No.9 Bond Protector Nourishing Hair Serum
Olaplex
Read our Olaplex brand guide →Olaplex No.9 Bond Protector Nourishing Hair Serum selected for Asian hair needs abroad.
Why Asian Stylists Recommend It
Diaspora hair meets new water, pollution, and climate abroad; a light protective primer shields color-treated Asian hair from that environmental stress and gives the rest of the routine an even base — without the weight that would flatten straight hair at the root.
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Best for
Color-treated or fine-to-medium Asian hair wanting a lightweight protective primer at the start of a routine.
Avoid if
Skip if you want a rich finishing product — this is a first-step primer, not a leave-in for dry ends.
Why we recommend it
No.9 is the primer step — a lightweight serum you put on first, before any other product, on damp hair. It shields against pollution and everyday environmental stress and creates a base coat that helps the rest of the routine and your heat styling work more evenly. On straight, fine-to-medium Asian hair it is light enough not to weigh the root down, which is why it sits at the front of the routine rather than the finish. Smooth a small amount through damp lengths, then layer your cream, oil, or heat protectant on top. Think of it as the primer under makeup: quiet on its own, but it makes everything after it hold better.
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