Redken Color Extend Shampoo

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Product is rated as #85 in category Shampoo Comparisons


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  • Brand: REDKEN
  • Analyzed: 436 reviews. Ranks in top-20% by number of reviews
  • Mentions: 67 positive. Ranks in top-80% by share of positive mentions
  • Amazon rating: 4.7. Ranks in top-5% by Amazon ratings
Redken Color Extend Shampoo photo
Redken Color Extend Shampoo

Price History



Redken Color Extend Shampoo is a popular choice among customers, with an overall rating of 4.1 out of 5.

  • It is highly effective in preserving hair color, with 89% positive mentions, ranking it in the top 5% of shampoos.
  • Customers appreciate the use of natural ingredients, with 100% positive mentions, placing it in the top 20% of shampoos.
  • It effectively cleans the hair, with 88% positive mentions, ranking it in the top 30% of shampoos.
  • Users have noticed an improvement in hair health, with 87% positive mentions, placing it in the top 30% of shampoos.
  • It enhances hair shine, with 92% positive mentions, ranking it in the top 40% of shampoos.
  • The shampoo has a moisturizing effect, with 88% positive mentions, placing it in the top 30% of shampoos.
  • It has received positive feedback for making hair soft and silky, with 97% positive mentions, ranking it in the top 40% of shampoos.
  • Some customers have expressed concerns about it being sulfate-free, with 43% positive mentions, placing it in the bottom 30% of shampoos.
  • It has received mixed reviews regarding frizz control and chemical content, placing it in the bottom 20-30% of shampoos.
Shampoo AttributeBG RatingNumber of MentionsPositive Review PercentageAttribute Ranking
Effectiveness in hair color preservation4.712589%top-5%
Natural Ingredients4.54100%top-20%
Effectiveness in cleaning hair4.53488%top-30%
Improvement of hair health4.34687%top-30%
Effect on shiny hair4.22692%top-40%
Effect on shiny hair4.22692%top-40%
Average performance
Moisturizing effect4.0488%top-30%
Effect on hair softness or silkiness3.94697%top-40%
Effect on hair manageability3.8981%top-40%
Curly or Wavy hair users shampoo experiences3.88100%top-30%
Effectiveness on Damaged hair3.7683%top-30%
Hair dryness reduction after shampooing3.74472%top-40%
Effectiveness in residue or buildup removal3.61369%top-60%
Sulfate-free shampoo2.9743%bottom-30%
Effectiveness on Frizz Control2.81457%bottom-20%
Shampoo chemical content2.71354%bottom-30%
Impact on scalp health2.6944%bottom-30%
Effectiveness on oily hair2.6825%bottom-20%
Effectiveness on hair loss2.630%bottom-20%
Effect on hair tangling2.530%bottom-20%
Effectiveness on dandruff2.5617%top-30%
Effect on blonde hair shades2.57100%top-40%
Purple Shampoo properties2.5367%top-60%
Effect on highlights2.53100%top-50%
Effectiveness on thinning hair2.5333%top-40%
Too few reviews:
Effectiveness on flaky scalpfrew reviews
Degreasing propertiesfrew reviews
Ash color maintenancefrew reviews
Bleached hair maintenancefrew reviews
Effectiveness in providing toning benefitsfrew reviews
Ability to neutralize brassy tonesfrew reviews
Biotin in shampoofrew reviews
Provision of fuller and voluminous hairfrew reviews
Squeaky clean hair feeling after shampoo usefrew reviews
Effectiveness in hair strengtheningfrew reviews
Tinting effect on hair shadesfrew reviews
Effectiveness on fungal infectionsfrew reviews
Effectiveness on psoriasisfrew reviews
Effectiveness on seborrheic dermatitisfrew reviews
Effectiveness on Hair Growthfrew reviews

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How we determined rating score for Redken Color Extend Shampoo

We strongly believe that the best information about a shampoo's performance comes from actual users. This includes details like how well it works for different hair types, health benefits, look and feel, and any side effects. Our analysis and scoring method includes:
  • Using AI to collect shampoo reviews from major online stores. We analyze these reviews to find out what customers care about the most, like how the shampoo works for different hair types, its scent, and its effectiveness in treating scalp and hair issues such as dryness, flakiness, or oiliness. We also look at other factors like how well it moisturizes, adds shine, and affects hair tangling.
  • Once we identify the main topics customers talk about, which we call product attributes, we use special AI algorithms to track every mention of these attributes in each shampoo we study.
  • For each shampoo and attribute, we calculate several metrics, like how often it's mentioned, its percentage of all reviews, and the balance of positive and negative feedback. We then compare these numbers across different shampoos to create a comparative score for each one, done separately for every attribute.