GlowGrails
Olaplex No.4 Bond Maintenance® Strengthening, Hydrating Hair Repair Shampoo for Medium Hair
Olaplex

No.4 Bond Maintenance® Strengthening, Hydrating Hair Repair Shampoo for Medium Hair

4.1★ · 3,394 Sephora reviews · #77 Sephora bestseller

  • GlowGrails score53/100i
  • Reddit signal58/100i
  • Evidence3 Reddit discussions
  • VerdictLeans positive
  • Strongest signalhair repair · strengthening
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Why it scored 53

Leans positive

3 independent Reddit discussions · Moderate evidence

0 positive3 mixed0 negative0 neutral
Bottom line

Reddit discussion leans favorable, but it is not unanimous. The strongest use-case signal is hair repair and strengthening. The most common watch-out is hair breakage and limit of repair.

People mention
hair repairstrengthening
Watch-outs
hair breakagelimit of repairlimited effectivenessoveruse

Representative discussions

Every summary links back to the source discussion.

Mixedr/HaircareScience · 104 points

Olaplex No.4 Bond Maintenance Shampoo can help repair and strengthen damaged hair, but its effectiveness may be limited and temporary, and it may not be suitable for all hair types or needs.

Open source →
Mixedr/HaircareScience · 65 points

Olaplex may not be able to fully repair severely damaged hair, and its effectiveness may be limited by the extent of the damage.

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Mixedr/HaircareScience · 58 points

Olaplex has a limit to how much repair it can do, and it may not be able to bring severely damaged hair back to a healthy state.

Open source →