OLAPLEX

OLAPLEX No.4 Strengthening Shampoo 250ml

£24at Amazon

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Price checked

Buy now at Amazon

Also at lookfantastic.com £30

Compare ›
  • No SLS or SLES
  • Amino acid and glucoside cleansers

We may earn a commission if you buy through our links. How we choose ›

No SLS or SLES

Size
250ml
Fragrance
yes
Colourants
CI 19140, CI 15985

Where we checked it: lookfantastic.com ›

Compare where to buy

Amazon

£24Buy now

lookfantastic.com

£30Buy now

We may earn a commission if you buy through our links. How we choose ›

Why we picked it

The premium pick: no SLS or SLES, mild amino acid and glucoside cleansers, and OLAPLEX’s patented bond-building ingredient aimed at chemically damaged hair.

Best for

Bleached, coloured or heat-damaged hair

Not for

Anyone wanting a short ingredient list, fragrance-free or dye-free

The details that matter.

  • • No SLS or SLES
  • • Amino acid and glucoside cleansers
  • • Bond-building complex
  • • Contains fragrance and colourants

Specifications

Size
250ml
Fragrance
yes
Colourants
CI 19140, CI 15985
Sulfate free
no SLS/SLES (no explicit claim on page)
Main surfactant
amino acid and glucoside types plus sulfosuccinate
How strong is the research? What our grades mean ›
Strong research
Independent certification or lab data for the specific claim.
Promising research
The material is well supported, but there is no product-level testing.
Early research
Little independent research.
Mixed research
Research findings disagree.
£
Under £20
££
£20 to £79
£££
£80+
How we choose ›

Part of your longer life. Related guides and swaps.

Sources

  1. lookfantastic.com