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OLAPLEX

No.4P Blonde Enhancer Toning Shampoo

Purple toning shampoo · 250 ml

$34

on Amazon · $4.02 / fl oz

Amazon price as of Sep 25, 2026, 8:24 PM ET, subject to change: the price on Amazon at checkout is the one that applies.

L'Oréal Paris EverPure Brass Toning Purple Shampoo
1 dupe from $9.97.Compare them →−63%

Available on Amazon. We may earn a commission; the price you pay is the same.

Description

Sulfate-free purple shampoo for blonde, grey and lightened hair: a violet dye cancels yellow and brassy tones, and Olaplex's bond builder works on the hair while it does.

Key ingredients
  • Bis-aminopropyl diglycol dimaleate
  • Acid Violet 43

No.4P Blonde Enhancer Toning Shampoo dupes

Cost per fl oz

OLAPLEX$4.02 / fl oz
L'Oréal Paris$1.47 / fl oz

$24.03 less at checkout than the original.

Size
Original · OLAPLEX250 ml
Dupe · L'Oréal Paris200 ml
Key ingredients
Original · OLAPLEXBis-aminopropyl diglycol dimaleate, Acid Violet 43
Dupe · L'Oréal ParisAmodimethicone, Polyquaternium-10

What matches

Same job: a sulfate-free purple shampoo whose violet dye cancels the yellow and orange in blonde, grey and lightened hair.

What the dupe does worse

Olaplex adds its patented bis-aminopropyl diglycol dimaleate and cleans with an olefin sulfonate, while L'Oréal uses isethionate and sulfosuccinate cleansers plus amodimethicone for slip, with no bond builder.

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$34

$4.02 / fl oz