The best-selling shampoo from Olaplex is now formulated to celebrate the beauty of blonde. Olaplex No.4-P Blonde Enhancer Toning Shampoo strengthens, softens, and neutralizes unwanted yellow tones for brighter, more manageable hair. Olaplex No.4-P maintains all the benefits of the original No.4 and deposits just the right amount of tone to neutralize any unwanted warmth between salon visits.

The sulfate-free, highly concentrated formula allows for customizable toning - The longer you treat, the brighter the results. Whether your blonde comes naturally or from your stylist, root to tip or balayage, and even if you’re proudly grey, Olaplex No.4-P Blonde Enhancer Toning Shampoo will help to keep your colour bright.

Apply to wet hair. Lather fully & let process 1-3 minutes. Rinse. For more intense toning, leave on up to 5 minutes. Follow with Olaplex N°5 Bond Maintenance Conditioner (sold separately).

Tip: If hair has product build-up, cleanse first with Olaplex N°4 Bond Maintenance Shampoo.