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Olaplex · Blonde Enhancer

Nº.5P Blonde Enhancer Purple Toning Conditioner

Conditioner / Light rinse-out, conditioning

  • Conditioner
  • Sulfate-free
  • Silicone-free
  • Protein-free
Size8.5 fl oz
Price$25.88seen at one store · 8.5 oz
Price / oz$3.05/ozat 8.5 oz
Where to buy1 store

Scent:

The ingredient list declares fragrance. What it smells of is not stated, and we do not guess.

Manufacturer page: olaplex.com

Personal fit

Is this right for you?

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Upper-mid price for a conditioner

$3.05/oz at 8.5 oz — more than 74% of the 689 conditioners , which mostly run $0.91–3.10/oz. The cost less.

Price and stores

Great for

Protein-sensitive hairthat stiffens when protein is added
Curly-method routinesno sulfates and no water-insoluble silicones
Fine hairthat flattens under most products
Silicone-free routinesno silicones appear in the list
Very dry hairno fast-drying alcohol in the list
Cuticle-smoothing pHa pH adjuster brings it to the acidic range hair prefers

Maybe skip if

this product carries a scent
Hair that needs proteinthere is none in this list
Dry or very humid airwhere heavy humectants work against you
Coarse, very dry hairthis is a light formula for its category
Tight budgetsit sits in the upper price tiers

Whether this much richness is right for you depends on your strand thickness, porosity, and how easily your hair flattens — that is what the consultation works out.

What the formula actually does

Read from the label, not the marketing

Each row says where it comes from: F means we derived it from this product’s own ingredient list, S means it is a claim the brand makes that the formula neither confirms nor contradicts.

Slip and detangling Moderate

Conditioning agents are present, lower in the list.

Oils and butters None

No oils or butters in the list.

Weight on the hair Light

Water-first and light: unlikely to flatten fine hair.

Water-binding (humectants) High

Humectants near the top — water-binding is a headline mechanism here.

Protein None

No protein or amino acids in the list.

Needs detergent to remove No

Nothing here needs a detergent wash to remove.

Hard-water defence None

No chelating agent in the list.

Fragrance Present

Fragrance is listed; it sits below the working ingredients.

from the formula stated by the brand reported by reviewers Scale: 1 dot low · 5 dots high, within this product type.

Ingredients that matter

The ingredients that change a decision

The workhorse ingredients plus anything lower down that changes a decision. These chips name what an ingredient does — they are not safety scores, and no ingredient here is rated good or bad on its own.

IngredientWhat it doesWhy it mattersChip
WaterAqua (Water, Eau) solvent The base everything else is dissolved in Neutral
Sodium C14-16 Olefin Sulfonate olefin sulfonate cleanser — Cleanses
Cocamidopropyl Betaine amphoteric cleanser — Cleanses
Glycerin humectant Pulls water into the hair Moisturizes
Sodium Chloride salt Thickens the formula Stabilizes
Sodium Cocoamphoacetate amphoteric cleanser — Cleanses
Acrylates Copolymer film former Lays down the film that holds a shape Holds
Bis-Aminopropyl Diglycol Dimaleate conditioning agent Reduces combing force Detangles
FragranceParfum (Fragrance) fragrance The scent Fragrance
Menthol fragrance The scent Fragrance
Citrus Aurantium Peel Oil botanical extract A trace plant extract Fragrance
Limonene fragrance The scent Fragrance
What the list leaves out, and what it carriesNo sulfates, silicones, or drying alcohols. Protein-free: this is built for moisture rather than for strengthening. Contains fragrance.
Full ingredient list (23)

US labelling rules put ingredients above 1% in descending order of amount; below 1% they may be listed in any order. Annotations keep three readings separate: the ingredient's general function, its role in this product type, and what its position can support.

  • 1 Water · Aqua (Water, Eau)
    General function

    The base of almost every rinse-off and cream hair product. It carries everything else and is normally the first ingredient on the label.

    Leading ingredient

    Listed in the first three ingredients, it is likely a structural part of this formula.

    • solvent
  • 2 Sodium C14-16 Olefin Sulfonate
    General function

    A strong non-sulfate detergent used in "sulfate-free" shampoos. It cleans about as thoroughly as a sulfate despite the label difference.

    Leading ingredient

    Listed in the first three ingredients, it is likely a structural part of this formula.

    May suitBuild-up-sensitive routines

    A strong detergent with no sulfate on the label. It removes deposited films about as completely as a sulfate does.

    May not suitVery dry or highly damaged hair

    Sulfate-free on the label is a naming fact, not a mildness one: this is an efficient detergent, and hair short of moisture can feel it.

    PubChem
    • olefin sulfonate cleanser
    • cleanser
  • 3 Cocamidopropyl Betaine
    General function

    A mild coconut-derived co-cleanser that boosts foam and softens the effect of stronger detergents. It appears in most shampoos, gentle or not.

    Leading ingredient

    Listed in the first three ingredients, it is likely a structural part of this formula.

    May suitDry, coarse, or high-porosity hair

    Mild cleansing leaves more surface lubrication in place on hair that dries out quickly.

    May not suitBuild-up-sensitive routines

    The mildest detergents are also the least complete: a routine that deposits films needs something stronger periodically.

    DependsVery dry or highly damaged hair

    Among the mildest detergents in use — it is what baby shampoos are built on — but it is almost always the second detergent in a formula. How much a wash strips is still decided by the primary detergent listed above it.

    Indian Journal of Dermatology
    • amphoteric cleanser
    • secondary cleanser
    • cleanser
  • 4 Glycerin
    General function

    A small water-loving molecule that draws moisture into the hair and holds it there. It is the most common softening ingredient in conditioners and leave-ins.

    Supporting ingredient

    Listed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.

    May suitDry, coarse, or high-porosity hair

    High-porosity hair loses water fast; a humectant holds some of it in place for longer than the wash itself would.

    May suitVery dry or highly damaged hair

    Binds water into the outer layers of the strand, and water is what makes dry hair flexible again rather than brittle.

    DependsClimate-sensitive or frizz-prone hair

    Water moves both ways. Measured across concentrations, glycerin solutions give water up in some conditions and take it from the air in others. What it does for you depends on how much of it is there and on the air around it.

    Scientific Reports
    • humectant
  • 5 Sodium Chloride
    General function

    Table salt. In shampoo it is used to thicken the liquid, not to treat the hair.

    Supporting ingredient

    Listed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.

    PubChem
    • salt
    • thickener
  • 6 Sodium Cocoamphoacetate
    General function

    A very mild cleanser common in baby and sensitive-scalp shampoos.

    Supporting ingredient

    Listed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.

    May suitDry, coarse, or high-porosity hair

    Mild cleansing leaves more surface lubrication in place on hair that dries out quickly.

    May suitVery dry or highly damaged hair

    One of the mildest detergent classes. It is usually there to let a formula lather without a harsher detergent doing the work.

    May not suitBuild-up-sensitive routines

    The mildest detergents are also the least complete: a routine that deposits films needs something stronger periodically.

    • amphoteric cleanser
    • secondary cleanser
    • cleanser
  • 7 Acrylates Copolymer
    General function

    A hold polymer that forms a firm, humidity-resistant film. It is the usual source of a hard cast in gels.

    Supporting ingredient

    Listed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.

    May suitClimate-sensitive or frizz-prone hair

    A set polymer film is a physical barrier to humidity, so a style keeps its shape longer in damp conditions.

    May suitMaximum-hold styling

    Synthetic film formers dry into a continuous film, which is what holds a shape against movement and against humid air.

    DependsBuild-up-sensitive routines

    Some acrylate copolymers rinse with water and some need a detergent; the label alone does not say which one a formula used.

    • film former
    • polymer
  • 8 Bis-Aminopropyl Diglycol Dimaleate
    General function

    A bond-repair ingredient that reacts with sulfur groups in the hair. It is the active in one of the widely marketed bond-building systems.

    Supporting ingredient

    Listed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.

    May suitFrizz-prone, damaged, or high-friction hair

    Deposits a lubricating layer that makes combing easier, which is most of what stops mechanical damage adding to frizz.

    • conditioning agent
  • 9 Betaine
    General function

    A sugar-beet derived humectant that binds water. Despite the name it is not a cleanser like cocamidopropyl betaine.

    Secondary ingredient

    Lower in the ordered portion of the list, it is more likely playing a supporting role than defining the formula.

    May suitDry, coarse, or high-porosity hair

    High-porosity hair loses water fast; a humectant holds some of it in place for longer than the wash itself would.

    May suitVery dry or highly damaged hair

    Binds water into the outer layers of the strand, and water is what makes dry hair flexible again rather than brittle.

    DependsClimate-sensitive or frizz-prone hair

    A humectant moves water in whichever direction the air allows: it holds moisture in humid conditions and can pull it back out of hair in very dry ones.

    PubChem
    • humectant
  • 10 Polyquaternium-7
    General function

    A conditioning polymer that improves wet combing and adds body. Repeated use can build up on fine hair.

    Secondary ingredient

    Lower in the ordered portion of the list, it is more likely playing a supporting role than defining the formula.

    May suitCurls or waves needing flexible hold

    Cationic polymers hold a curl loosely and stay soft, which is why they turn up in definition products rather than firm-hold ones.

    May suitFrizz-prone, damaged, or high-friction hair

    A cationic polymer stays on the hair through rinsing, which is what keeps static and combing friction down after the wash.

    May suitMaximum-hold styling

    Film formers are what hold a style: they dry into a connected film across the strands so the shape resists movement.

    • conditioning agent
    • film former
    • polymer
  • 11 Guar Hydroxypropyltrimonium Chloride
    General function

    A conditioning polymer made from guar bean gum. It deposits during rinsing, which is why sulfate shampoos can still leave hair soft.

    Secondary ingredient

    Lower in the ordered portion of the list, it is more likely playing a supporting role than defining the formula.

    May suitCurls or waves needing flexible hold

    Gums thicken and set soft, which gives definition that bends rather than a rigid cast.

    May suitFrizz-prone, damaged, or high-friction hair

    Cationic conditioners bind to the negatively charged damaged cuticle, laying it flat and cutting the friction that causes combing breakage.

    May suitMaximum-hold styling

    A styling polymer dries into a film across the strands, which is what makes a shape hold instead of relax.

    • conditioning agent
    • polymer
    • gum
  • ▾Below about this point, order stops being meaningful — these are typically used at 1% or less.
  • 12 Ethylhexylglycerin
    General function

    A preservative booster that also adds a little softness. Almost always paired with phenoxyethanol.

    Estimated lower-concentration zone

    It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

    May suitFrizz-prone, damaged, or high-friction hair

    Emollients fill and smooth the surface of the strand, which lowers the friction that lifts the cuticle and reads as roughness.

    PubChem
    • preservative
    • emollient
  • 13 Fragrance · Parfum (Fragrance)
    General function

    An undisclosed blend of scent ingredients. Regulations let it stay unlisted, so a fragrance-free product is the only way to be certain what is not in it.

    Estimated lower-concentration zone

    It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

    May not suitFragrance-sensitive routines

    Declared fragrance. On a fragrance-sensitive routine this is the line that decides it, wherever it sits on the label.

    • fragrance
    • declared fragrance
  • 14 Citric Acid
    General function

    Used to bring the product to a slightly acidic pH, which helps the cuticle lie flat. It is almost always near the end of the list.

    Estimated lower-concentration zone

    It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

    May suitBuild-up-sensitive routines

    Holds hard-water minerals in solution so they rinse away instead of depositing on the hair.

    May suitFrizz-prone, damaged, or high-friction hair

    The acid side of pH adjustment, and the reason it matters is measured: alkaline formulas raise the fibre's surface negative charge, increase friction between strands and lift the scales, while lower-pH ones do the reverse.

    May suitGray, silver, or brass-prone hair

    Where a warm cast comes from water minerals rather than from the hair itself, holding those metals in solution is what removes it.

    International Journal of Trichology
    • pH adjuster
    • hard-water chelator
  • 15 Phenoxyethanol
    • preservative
  • 16 Menthol
    General function

    Produces the cooling, tingling feeling on the scalp. The sensation is real; it is not evidence that anything else is happening.

    Estimated lower-concentration zone

    It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

    May not suitFragrance-sensitive routines

    Declared fragrance. On a fragrance-sensitive routine this is the line that decides it, wherever it sits on the label.

    PubChem
    • fragrance
    • active
  • 17 Citrus Aurantium Peel Oil
    General function

    A cold-pressed orange peel oil used for scent. Citrus oils are naturally high in limonene.

    Estimated lower-concentration zone

    It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

    May not suitFragrance-sensitive routines

    Essential oils are fragrance. Several carry constituents on the EU list of declared fragrance allergens, so a label with no fragrance line can still be a scented product.

    • botanical extract
    • essential oil
    • fragrance
  • 18 Limonene
    General function

    A citrus-smelling fragrance component that EU rules require to be named separately because some people react to it.

    Estimated lower-concentration zone

    It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

    May not suitFragrance-sensitive routines

    One of the 26 scent components the EU requires to be named individually above a threshold. It is named because it is a known contact allergen, not because it is unusual.

    PubChem
    • fragrance
    • named fragrance allergen
  • 19 Hexyl Cinnamal
    General function

    A jasmine-like fragrance component named separately as a recognised allergen.

    Estimated lower-concentration zone

    It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

    May not suitFragrance-sensitive routines

    One of the 26 scent components the EU requires to be named individually above a threshold. It is named because it is a known contact allergen, not because it is unusual.

    PubChem
    • fragrance
    • named fragrance allergen
  • 20 Sodium Benzoate
    • preservative
  • 21 Ext. Violet 2 (CI 60730) · CI 60730 (Ext. Violet 2)
    General function

    A certified colour that tints the product itself. It does not colour hair.

    Estimated lower-concentration zone

    It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

    May suitGray, silver, or brass-prone hair

    A violet or blue colorant sits opposite yellow on the colour wheel, so a trace of it deposited on the surface makes a warm cast read cooler. It washes out over the following few washes.

    • colourant
    • direct dye
    • violet dye
  • 22 Yellow 5 · CI 19140 (Yellow 5)
    General function

    A certified colour added to tint the product itself. It does not colour hair.

    Estimated lower-concentration zone

    It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

    May suitGray, silver, or brass-prone hair

    A violet or blue colorant sits opposite yellow on the colour wheel, so a trace of it deposited on the surface makes a warm cast read cooler. It washes out over the following few washes.

    • colourant
  • 23 Ci 15985 (Yellow 6)
    General function

    A certified colour that tints the product itself. It does not colour hair.

    Estimated lower-concentration zone

    It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

    May suitGray, silver, or brass-prone hair

    A violet or blue colorant sits opposite yellow on the colour wheel, so a trace of it deposited on the surface makes a warm cast read cooler. It washes out over the following few washes.

    • colourant

What the whole list adds up to

  • 5 fragrances
  • 3 cleansers
  • 3 polymers
  • 3 preservatives
  • 3 colourants
  • 2 amphoteric cleansers
  • 2 secondary cleansers
  • 2 humectants
  • 2 film formers
  • 2 conditioning agents
  • 2 named fragrance allergens
  • 1 solvent
  • 1 olefin sulfonate cleanser
  • 1 salt

Ingredient list captured 2026-08-22. Formulas change — check the package in your hand when an ingredient matters to you.

Price · 8.5 oz

Seen at $25.88 1 store · checked Aug 22
Good value under $12 Under $1.43/oz it costs less than three-quarters of the 7 products we score as doing the same job

Priced above the products that do the same job. Stores sell it above the $12 line; products that do this job typically go for about $17 at this size.

Show the price ladder
Where we’ve seen it1 listing · 1 store
  • Target
    $25.88
    8.5 oz · $3.04/oz
    Aug 22Lowest per oz

Sorted by price per ounce. Dated observations from our research, not live prices. Direct store pages, no affiliate links. We don’t sell this product.

How we work this out
  1. 8.5 oz is the size stores list most often; every comparison on this page is made at it. Other sizes are shown in the Sizes row and the store list.
  2. Seen at $25.88 is the price we have observed for the 8.5 oz. We need three stores before we call a price commonly seen.
  3. Good value under $12 comes from the 7 products we score as doing the same job as this one. A quarter of them cost less than $1.43/oz; at 8.5 oz that is $12. Under that line you are paying less than most of them.
  4. About $17 is what those same products typically cost at this size — the midpoint of their prices per ounce, scaled to 8.5 oz.

Formula

Formula score
5 of 10

Both the formula and the price land mid-range: it covers the core of what a conditioner does and costs about what conditioners cost per ounce.

How the score is counted
  • Costs more per ounce than 74% of the 689 conditioners we’ve priced
  • No conditioning agents up front in the formula
  • Reviewers mention 3 recurring complaints
  • Salon tier, sold at Brand website and Target
  • Conditioning agents up frontWhat makes wet hair comb through.3 pts
  • Oils or butters in the working zoneSoftens the strand rather than just coating it.2 pts
  • Slip for detanglingReduces the force it takes to comb wet hair.2 pts
  • A humectantBinds water into the hair.1 pt
  • A pH adjusterBrings the formula to the acidic pH hair prefers.1 pt
  • Fragrance kept out of the top eightScent as a finishing touch, not a major share.1 pt

The formula score is completeness for the job: the share of the systems this product type is normally built around that we can find in this list, weighted. It is not efficacy, not quality, and it never compares across product types.

Does the same job

Same derived functions — what it cleans, conditions, coats or holds — at a lower cost per ounce. Scent, texture and where you buy it can still differ.

GoldwellClosest function Dualsenses Blondes & Highlights Anti-yellow Conditioner
Function
  • Slip and detangling
  • Film formers
Also
  • Cruelty-free
  • Masstige tier
  • 6.7 oz bottle
Compare
ClairolLowest cost per oz Clairol Professional Shimmer Lights Purple Conditioner for Blonde & Silver Hair $0.80/oz $2.25/oz less
  • Budget
· Related function
Function
  • Slip and detangling
  • Film formers
Also
  • Drugstore tier
  • 16 oz bottle
Compare
DevaCurlClose function CurlHeights Conditioner $1.95/oz $1.10/oz less
  • Protein-free
  • Curly method
  • Silicone-free
Function
  • Toning dye
  • Weight on the hair
Also
  • Cruelty-free
  • Prestige tier
  • 12 oz bottle
Compare

See more alternatives in the product library

These are functional neighbours, not personal recommendations — they are close on formula, not chosen for anyone. Get the one that fits your hair, routine, and budget

Suits every hair pattern

Final decision

Should you buy it?

Good for the right person
Best user

Hair that stiffens on protein, looking for a protein-free formula and a curly-method-compatible formula

Biggest tradeoff

Worth skipping for anyone sensitive to fragrance, soft, over-stretchy hair that needs protein, or very dry or very humid climates

Best alternative if not

Nothing in our library matches it closely at a lower price.

We do not sell products or take placement fees. This page states what the formula and the prices show; the consultation is what matches it to a person.

Claims check

What the brand says, against what the formula shows

Claims are quoted from the brand. We only mark one supported, partly supported, or conflicting when the ingredient list actually speaks to it; everything else stays "stated by the brand", which is not a criticism — most claims simply cannot be read off a label.

0
SupportedBacked by ingredients
0
Partly supportedSome supporting logic
3
Stated by brandNo clear evidence
0
Potential conflictFormula works against claim
Neutralizes brassiness for brighter hair

This is a marketing claim; an ingredient list cannot speak to it.

—

Stated by brand

Can’t be confirmed from label.

91% agree hair was less brassy*

A brand-run study. We report it as stated and do not repeat the number as fact.

—

Stated by brand

Only the brand’s testing shows this.

89% smoother after one use**

A brand-run study. We report it as stated and do not repeat the number as fact.

—

Stated by brand

Only the brand’s testing shows this.

How to read this

We look at the first 10–15 ingredients and what they do in a formula — not marketing. If the list doesn't speak to a claim, we don't assume.

Reviewers

What people report

Recurring themes our researchers wrote in their own words from sourced reviews. We do not store or scrape star ratings.

Some users report blonde hair turning gray or purple after the first use.

Ana, Ulta reviewer

A reviewer reports cracked packaging on delivery.

Sakura, Ulta reviewer

Reviewers report brass toning but straw-dry hair or purple shadows if left too long or rinsed poorly.

Sabine and Mrs A, Ulta reviewers

Reviewers report brass reduction, lightening, and lightweight conditioning, but purple transfer to hands is possible.

DizzyLizzy, Ulta reviewer

More from Olaplex

How this page was made

  • Everything above is generated from our researched product record — identity, the ingredient list as printed, the brand's own claims, dated price observations, and review themes written in our researchers' own words. No part of this page is written per product.
  • The value band is a fixed label over two stored numbers: this product’s cost per ounce as a percentile of every product of this type we have priced, each at the size it is most often sold in, and how many products we score as doing the same job cost at least a quarter less per ounce.
  • Both scores out of ten are defined on this page. The formula score is completeness for the job, computed from a fixed per-format checklist shown beneath the gauge; the price score is cost per ounce against every product of this type we have priced.
  • The "Is this right for you?" panel reads only your own consultation answers, and it applies exactly the filters our recommendation engine applies. It is computed when you load the page and is never stored on it.
  • 5 sources consulted for this product (4 manufacturer or regulatory, 1 retailer, 0 editorial), last checked 2026-08-25.
  • Ingredient references are linked for 9 of 19 product-aware annotations on this page. Fit notes are conditional formulation guidance, not a conclusion about the finished product or about you.
  • We have not tested this product in a lab and we do not physically test your hair. Formula readings come from the ingredient list; behaviour claims are labelled as the brand's.
  • Ingredient order tells you relative amount only above roughly 1%. Prices are observations on the dates shown and change without notice.
  • Ingredient names link to our ingredient library, where each entry shows what it does, which product types use it, and where it usually sits on a label across everything we have researched.
  • This is cosmetic information, not medical advice, and nothing here diagnoses or treats a health condition.
  • Formula readings: derivation v22. Record last updated 2026-08-25.

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