This is an auto-rotating announcements carousel. Use the pause button to stop rotation, or use the left and right arrow keys to navigate between slides.
Free 4-Piece Repair Set with a $75+ order. Code REPAIR
This is a carousel of product images. Use the thumbnail buttons to navigate between slides, or swipe to navigate on touch devices. Activate the zoom button on any slide to view the image in a larger modal.
This is a carousel of product images. Use the thumbnail buttons to navigate between slides, or swipe to navigate on touch devices. Activate the zoom button on any slide to view the image in a larger modal.
A purple toning shampoo for blondes and greys that neutralizes brassiness and repairs everyday damage to reveal bright, evenly toned, shiny, and strong hair in 1 wash.
One-click checkout with
Complimentary Samples
Free Shipping on $50+
Key Benefits
Brightens hair color and enhances shine
Neutralizes unwanted yellow tones & brassiness
Repairs everyday damage and defends against future breakage
Strengthens and reinforces bonds for more resilient hair
Gently cleanses without stripping
Dermatologist tested, vegan, color-safe, and suitable for chemically treated hair.
A little goes a long way with this highly concentrated formula.
250mL: Up to 100 applications*
1000mL: Up to 400 applications*
*Based on the average application size of 2.5mL
1. Apply a generous amount to wet hair.
2. Lather. Allow to process for 2 minutes.
3. Rinse.
For best results, follow with N°.5P Blonde Enhancer™ Toning Conditioner.
This product contains ingredients that may cause skin irritation on certain individuals, and a preliminary test according to the accompanying directions should first be made. This product may not be used for dyeing of eyelashes or eyebrows; to do so may cause blindness. Avoid contact with eyes. In case of contact with eyes, rinse immediately.
Patch test: apply a small amount of the product on the inside of your elbow or behind the ear and wait for 48 hours. Do not use if irritation occurs. Wear gloves.
Clinically proven to deliver 3X brighter hair*
This ultra-concentrated purple shampoo evens the tone of natural or color-treated blondes, or greys– neutralising unwanted yellow tones and brassiness to reveal bright, shiny hair.
The hydrating lather gently cleanses hair and enhances softness while repairing everyday damage for stronger, more resilient hair in 1 wash*
Formulated for straight, wavy, curly, or coily hair with fine texture– plus all porosity levels.
Dermatologist Tested. Vegan. Color-safe and suitable for chemically treated hair.
*When used as a system with N°.5P Blonde Enhancer™ Toning Conditioner.
Violet Toning Agents Seal in brightness and balance tone to reduce brassiness and yellow tones.
Gentle Blend of Coconut Oil-Derived Surfactants Provides easy lather and leaves the scalp and hair feeling hydrated
**Based on an independent consumer perception study of 60 women with bleached/color-treated blonde hair.
Powerful Results
***After 1 use when used as a system, clinically tested.
This is a carousel displaying clinical results. Use the Next and Previous buttons to navigate between slides.
3X
brighter hair*
90%
agree hair was less brassy**
52%
less breakage after one use***
Results With One Use
BEFOREAFTER
Unretouched Images*
*Results may vary.
Results achieved by cleansing with N°.4P Blonde Enhancer™ Toning Shampoo, conditioning with N°.5P Blonde Enhancer™ Toning Conditioner, and applying N°.9 Bond Protector Nourishing Hair Serum to damp hair before styling.
BEFOREAFTER
Unretouched Images*
*Results may vary.
Results achieved by cleansing with N°.4P Blonde Enhancer™ Toning Shampoo, conditioning with N°.5P Blonde Enhancer™ Toning Conditioner, and applying N°.9 Bond Protector Nourishing Hair Serum to damp hair before styling.
BEFOREAFTER
Unretouched Images*
*Results may vary.
Results achieved by cleansing with N°.4P Blonde Enhancer™ Toning Shampoo, conditioning with N°.5P Blonde Enhancer™ Toning Conditioner, and applying N°.9 Bond Protector Nourishing Hair Serum to damp hair before styling.
Recommended Routine
This is a product carousel. Use the Previous and Next buttons to navigate between products, or swipe left and right on touch devices.
Common Questions
OLAPLEX recommends using Nº.4P Blonde Enhancer™ Toning Shampoo 1-2x per week, or as needed.
Yes. Nº.4P Blonde Enhancer™ Toning Shampoo is highly concentrated with purple pigment and will neutralize any unwanted yellow or brassy tones in the hair.
Nº.4P Blonde Enhancer™ Toning Shampoo is formulated with conditioning surfactants and will not dry out the hair.
Nº.4P Blonde Enhancer™ Toning Shampoo should be added to a haircare routine as an alternative when needed. During wash cycles, using Nº.4P Blonde Enhancer™ Toning Shampoo it is not necessary to also use regular shampoo.
Yes. Using Nº.4P Blonde Enhancer™ Toning Shampoo and No.5P Blonde Enhancer™ Toning Conditioner together as a system will provide maximum toning and brightening results.
Recently Viewed
Back to top
Choosing a selection results in a full page refresh.
One or more of the items in your cart is a recurring or deferred purchase. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted.