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Side-by-side comparison

Nº4 Bond Repair ShampoovsGK

Restores Broken Hair Bonds·HAIR Keratin Shampoo for Color Treated Hair – Sulfate…

Side-by-side look at Nº4 Bond Repair Shampoo Restores Broken Hair Bonds ($55.0) and GK HAIR Keratin Shampoo for Color Treated Hair – Sulfate… ($10.5) in the hair shampoo category.

Dupe Score 92Excellent dupe
95% matchSave 81%
High confidenceShop the dupeAll dupes for this productNº4 Bond Repair Shampoo brand hub

Luxury pick

Restores Broken Hair Bonds

Nº4 Bond Repair Shampoo

Restores Broken Hair Bonds

$55
$0.12 / ml
Shop Nº4 Bond Repair ShampooSearch Amazon

Budget dupe

HAIR Keratin Shampoo for Color Treated Hair – Sulfate…

GK

HAIR Keratin Shampoo for Color Treated Hair – Sulfate…

$10.5
$0.04 / ml
Shop the dupe on AmazonSearch Amazon
SpecNº4 Bond Repair ShampooGK
CategoryHair ShampooHair Shampoo
FinishVariesVaries
CoverageVariesVaries
Volume450 ml (15.2 fl oz)298.69 ml (10.1 fl oz)
Unit Price$0.12 / ml$0.04 / ml
Skin TypeAllAll
TagsLuxuryBudget

Our verdict

For a fair comparison, weigh formula claims, shade/finish, and wear time — not just price. GK HAIR Keratin Shampoo for Color Treated Hair – Sulfate… undercuts Nº4 Bond Repair Shampoo Restores Broken Hair Bonds by about 80%, but the luxury option may still win on texture, longevity, or shade match depending on your priorities. Size-wise, Nº4 Bond Repair Shampoo lists ~450.0 ml vs GK at ~298.69 ml — check unit price before buying.

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We watch GK HAIR Keratin Shampoo for Color Treated Hair – Sulfate… (currently $10.5) and email you when the price drops.

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