Olaplex
No.4P Hair Brightening & Toning Purple Shampoo
4.2★ · 734 Sephora reviews · #705 Sephora bestseller
- GlowGrails score44/100i
- Reddit signal38/100i
- Evidence4 Reddit discussions
- VerdictLeans negative
- Strongest signalbrightening · toning
Why it scored 44
Leans negative
4 independent Reddit discussions · Moderate evidence
Bottom line
Reddit discussion leans negative, with meaningful reservations. The strongest use-case signal is brightening and toning. The most common watch-out is dryness and breakage.
People mention
brighteningtoningclarificationmaintenance
Watch-outs
drynessbreakagebuildupdamage
Representative discussions
Every summary links back to the source discussion.
Mixedr/HaircareScience · 7 points
Olaplex No.4P Hair Brightening & Toning Purple Shampoo can cause dryness and damage, especially with overuse or on non-damaged hair
Open source →Mixedr/HaircareScience · 6 points
Olaplex shampoo and conditioner may not be suitable for non-damaged hair, causing buildup and weight
Open source →Negativer/Sephora · 5 points
Olaplex No.4P Hair Brightening & Toning Purple Shampoo tones well but can be drying, prompting the search for a gentler alternative
Open source →