Olaplex No.1 Bond Multiplier (525ml)

Regular price €49,99
Sale price €49,99 Regular price €69,99
Unit price
Tax included.

Olaplex No.1 is the professional first step of the salon system: it is mixed into the colour or lightener rather than used on its own, and it is always followed by No.2 at the bowl. If you are not mixing colour or bleach yourself, this is not the Olaplex to buy — No.3 is.

✔️ Mixed into colour or lightener, not applied on its own
✔️ Step 1 of 2 — always followed by No.2 Bond Perfector
✔️ Olaplex states it rebuilds disulfide, hydrogen and ionic bonds
✔️ Free of protein, alcohol and gluten, colour safe, all hair types
✔️ 525 ml professional size — buy No.3 instead if you do not colour hair yourself

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Olaplex No.1 Bond Multiplier (525ml)
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For faster & better results

K18 Leave-In Molecular Repair Hair Mask

Molecular repair for damaged hair in 4 minutes.

K18 AirWash™ Dry Shampoo (118ml)

Refresh your hair between washes.

Olaplex No.1 Bond Multiplier 525ml bottle

Olaplex No.1 Bond Multiplier (525ml)

Regular price €49,99
Sale price €49,99 Regular price €69,99
Unit price

Olaplex No.1 Bond Multiplier

The professional first step of the two-part in-salon system. No.1 is not a treatment you apply on its own — it is mixed into the colour or lightener before the service, and it is always followed by No.2 Bond Perfector at the bowl afterwards. Buying No.1 without No.2 makes little sense.

  • Mixed into colour or lightener rather than used as a standalone treatment
  • Step one of two: No.2 finishes the job at the bowl
  • Olaplex states it rebuilds disulfide, hydrogen and ionic bonds
  • Free of protein, alcohol and gluten, and colour safe on all hair types
  • 525 ml professional bottle, sized for regular salon use rather than the bathroom shelf

Being honest about who this is for

If you are not mixing colour or bleach yourself, this is not the Olaplex to buy — No.3 is. No.1 only does its work inside a chemical service, so without one it has nothing to protect against. Olaplex does publish a diluted standalone protocol for at-home use, but for anyone not colouring or lightening their own hair, No.3 is the simpler and more suitable product, and we would rather say so than take the sale.

The 525 ml size points the same way. It is a professional bottle meant to be worked through across many services, not a retail-sized bottle bought for one person's occasional use.

What Olaplex claims it does

Olaplex states that No.1 rebuilds disulfide, hydrogen and ionic bonds in the hair. Used as a system with No.2, the brand claims it cuts breakage roughly in half during colour or lightening services. That is the brand's claim rather than ours, and it is a claim about hair going through a chemical service — it is a cosmetic product for the condition of the hair, and nothing here treats hair loss or any medical condition.

It is free of protein, alcohol and gluten, colour safe, and suitable for all hair types, so it does not fight with the colour formula it is mixed into.

Where it sits in the range

If this is your first Olaplex purchase and you are not a colourist, start at No.3 rather than here.

Shipping:
We aim to process and ship your order as quickly as possible. Orders are usually dispatched on the same business day after payment is received. Once your order has been shipped, you will receive a shipping confirmation with tracking information so you can follow the status of your package. Please note that delivery times may vary depending on your location and the shipping method you choose.

Returns:
We want you to be completely satisfied with your purchase. If, for any reason, you are not satisfied with a product purchased from us, you have the right to return it within 30 days of receipt for a refund or exchange. Please keep the following points in mind:

  • The returned product must be in the same condition as when you received it, including all original packaging and labels.
  • Returns must be approved in advance. Please contact us to arrange a return and receive the necessary instructions.
  • Return shipping costs are your responsibility, unless the product is defective or does not match the description.
  • Once we have received and inspected the returned product, we will process the refund or ship a replacement product, depending on your preference.

Contact us:
If you have any questions about shipping, returns, or a specific product, please don’t hesitate to contact us. Our customer service team is ready to assist you and answer all your questions.

We appreciate your trust in us and are committed to providing you with the best possible shopping experience.

120-day satisfaction guarantee:
Separately from the 30-day right of return above, every order is covered by our 120-day satisfaction guarantee. Hair regrowth takes 3 to 6 months, so you get time to judge the results properly.

We recommend avoiding the use of this product in the following situations:

  • Allergy or sensitivity: Do not use this product if you are allergic or sensitive to any of the listed ingredients. Discontinue use immediately if irritation, redness, or discomfort occurs.
  • Scalp or skin conditions: Avoid use on broken, irritated, inflamed, or infected skin. If you have existing scalp conditions, consult a healthcare professional before use.
  • Eye sensitivity: Individuals with sensitive eyes should use caution during application and avoid direct contact with the eye area.
  • Pregnancy and breastfeeding: If you are pregnant or breastfeeding, consult a healthcare professional before introducing new cosmetic products into your routine.
  • Medical treatments: Individuals undergoing dermatological or medical scalp treatments should consult a physician before use to ensure compatibility.

When using this product:

  • For external use only.
  • Avoid contact with eyes. In case of contact, rinse immediately with plenty of water.
  • Use only as directed according to product instructions.
  • Do not apply excessively, as concentrated formulas require only small amounts.
  • Keep out of reach of children.

Expected results:

  • Results may vary between individuals depending on hair condition, damage level, and consistency of use.
  • Improvement in hair appearance develops progressively with regular use.
  • Professional results depend on proper routine and hair care practices.

General notice:

  • Olaplex products are cosmetic haircare products designed to improve the appearance and condition of hair.
  • Results are not guaranteed and may differ based on individual hair type and history of chemical treatments.
  • These products do not replace professional medical advice, diagnosis, or treatment.

About this product

Genuine salon stock

Original sealed packaging from official channels.

Bond-building care

Repair-focused formulas used in salons worldwide.

Follow the label

A little goes a long way — dosing and frequency are on the pack.

Pairs with your routine

Healthy hair care sits well alongside any regrowth routine.

Quick answers

Is this genuine?

Yes — we sell only original stock in sealed packaging, backed by our 120-day guarantee.

Will this regrow my hair?

No — bond-building care repairs and protects existing hair. For hereditary thinning, the licensed treatment is minoxidil; our guide explains who it suits.

How fast is shipping?

Order before 23:00 and it is processed the same day — free shipping on orders over €100.

Covered by our 120-day guarantee

Like every Hairdealz order, this product is covered by our 120-day money-back guarantee.

For faster and better results: