Olaplex Nº 4P Blonde Enhancer Toning Shampoo 1000ml
Olaplex Nº 4P Blonde Enhancer Toning Shampoo 1000ml is a professional size violet shampoo designed to cleanse, strengthen plus brighten blonde, lightened plus grey hair.
Genuine products · Expert-curated · Fast, tracked UK dispatch
A whole year of free shippingBecome a VIP for unlimited free delivery, plus an exclusive SkinCeuticals welcome gift. Upgrade →How to use
Apply to wet hair.
Massage evenly into scalp plus lengths.
Leave on for 1 to 3 minutes depending on desired toning intensity.
Rinse thoroughly.
Follow with Olaplex No.
5P Blonde Enhancer Toning Conditioner.
Ingredients (INCI)
Water (Aqua/Eau), Sodium C14-16 Olefin Sulfonate, Cocamidopropyl Betaine, Glycerin, Sodium Cocoamphoacetate, Sodium Chloride, Acrylates Copolymer, Betaine, Phenoxyethanol, Fragrance (Parfum), Polyquaternium-7, Bis-Aminopropyl Diglycol Dimaleate, Guar Hydroxypropyltrimonium Chloride, Ethylhexylglycerin, Hexyl Cinnamal, Limonene, Citric Acid, Sodium Benzoate, Acid Violet 43 (Cl 60730)
The benefits of NAD+

Toning shampoo neutralises brassy and yellow tones in blonde, bleached and highlighted hair
Bond-building formula strengthens hair while gently cleansing and toning with every wash
Sulphate-free for safe daily use without stripping colour-treated hair
Salon-size 1000ml for professional or frequent use at excellent value
Pairs optimally with the Nº 5P Blonde Enhancer Toning Conditioner


Made to fit your everyday
Simple to use and easy to love. Slot it into your morning or evening routine and let it get to work.
The science of NAD+
Formulated with Olaplex patented bond-building technology, Nº 4P works at a molecular level to strengthen the hair while delivering precise, even toning. The highly concentrated purple pigments counteract brassiness without drying, leaving hair visibly brighter and smoother. The 1000ml size is ideal for salon use or for maintaining blonde results long term at home.


Considered, quality formulation
Carefully formulated and curated by theskinbay for real, visible results.
How to use
Apply to wet hair.
Massage evenly into scalp plus lengths.
Leave on for 1 to 3 minutes depending on desired toning intensity.
Rinse thoroughly.
Follow with Olaplex No.
5P Blonde Enhancer Toning Conditioner.

Every product we stock is one I would happily use myself. Curated skincare, honest advice, and results you can feel.

Olaplex Nº 4P Blonde Enhancer Toning Shampoo 1000ml
+
Olaplex Nº 4P Blonde Enhancer Toning Shampoo 250ml
Expert-selected by The Skin Bay to work alongside Olaplex - both formulated to complement each other for enhanced results.
You may also love
Your questions answered
Are your products genuine?
Yes. Everything we sell is 100% genuine, sourced from the brand or authorised UK suppliers.
How fast is delivery?
Orders are dispatched quickly and tracked across the UK. See our delivery page for full timings.
What is your returns policy?
Unopened items can be returned within our standard returns window. See our returns page for details.
Do you offer rewards?
Yes. Earn Bay Points on every order to redeem against future purchases.
Need help choosing?
Our team can help you build the right routine. Reach out any time and we will point you in the right direction.
















