How Olaplex’s New No.4P & No.5P Keep Blondes, Greys, and Lightened Hair Brass-Free

Olaplex Expands Blonde Care Range with No.4P & No.5P: The Ultimate Duo for Bright, Healthy Blondes

Blondes, lightened, and grey-haired beauties know the struggle all too well — unwanted brassiness, dryness, and fragility can dull even the most stunning colour. Now, Olaplex, the #1 Professional Bond-Building Brand, is making it easier than ever to keep your tone bright and your strands strong with the launch of its perfect pairing: No.4P Blonde Enhancer™ Toning Shampoo and No.5P Blonde Enhancer™ Toning Conditioner.

Both are powered by patented OLAPLEX® Bond Building Technology™, delivering science-backed results for all hair types and textures, while targeting the unique needs of blonde, lightened, and grey hair.

Step One: No.4P Blonde Enhancer™ Toning Shampoo

This highly concentrated purple shampoo neutralizes unwanted yellow tones while repairing and strengthening hair from the inside out. The result? Brighter, softer, and more manageable strands after every wash.

Why We Love It:

  • Repairs, tones, and brightens in one step

  • Highly concentrated purple pigments allow customizable toning — the longer it’s left on, the brighter the results

  • Sulfate-free and safe for all blonde, lightened, and grey hair types

How to Use: Apply to wet hair, lather fully, and let process for 1–3 minutes before rinsing. For more intense toning, leave on up to 5 minutes.

Step Two: No.5P Blonde Enhancer™ Toning Conditioner

Inspired by Olaplex’s cult-favourite No.5 Conditioner, the new No.5P offers root-to-tip toning, hydration, and strengthening in one luxurious formula. Its micro-fine pigments reach areas purple shampoos often miss, ensuring even brightness from scalp to ends.

Why We Love It:

  • Locks in brightness and neutralizes brassiness

  • Detangles and softens with weightless hydration

  • Powered by OLAPLEX Bond Building Technology™ to keep even the most fragile hair strong

How to Use: Apply generously to clean, damp hair after shampooing. Leave on for up to 3 minutes, then rinse thoroughly. Use weekly or as needed.

The Science & Results

In clinical and consumer studies, users reported:

  • 87% saw less brassiness after one use

  • 87% noticed a more even tone

  • 81% experienced restored brightness and shine

  • Using No.4P + No.5P together boosted brass-neutralizing results to 91%

The Olaplex Difference

Founded in 2014 by two California chemists, Olaplex revolutionized haircare with its patented bond-building technology — repairing broken bonds caused by chemical treatments, heat styling, and environmental damage. Today, it’s one of the most recognized professional haircare brands worldwide, with over 100 patents and a cult following among stylists and consumers alike.

Pro Tip: Use No.4P and No.5P as a duo for maximum brightness, tone control, and hair health — a match made in blonde heaven.

Available at: Olaplex.com, professional salons, and select retailers.