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Kenra Professional

Platinum Silkening Gloss

Finisher / Serum, glossing

  • Finisher
  • serum
  • Sulfate-free
  • Protein-free
  • Cruelty-free · PETA-listed
Size2 fl oz
Priceabout $29commonly seen · 2 oz
Price / oz$14.50/ozat 2 oz
Where to buy6 stores · $26.10–29.00

Scent:

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

Listing used for research: ulta.com

Personal fit

Is this right for you?

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  • Your goals, scalp, damage history, water, budget, and scent preferences all shape your plan.

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Same job for less elsewhere

$14.50/oz at 2 oz — more than 75% of the 77 serums , which mostly run $3.25–14.50/oz.

View alternatives

Great for

Protein-sensitive hairthat stiffens when protein is added
Dull-looking haira recognised shine system is present
Humid climatesthe brand claims humidity resistance
Very dry hairno fast-drying alcohol in the list
Aerosol avoidancea pump or tube, not a pressurised can
A wide range of haira middle-of-the-range weight

Maybe skip if

this product carries a scent
Curly-method routinesthese silicones need a detergent to remove
Tight budgetsit sits in the upper price tiers

Whether a finisher this rich will read as shine or as grease depends on your strand thickness and oil rate — 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.

Shine system Silicone serum

A silicone or oil blend does the shine work here.

Weight on the hair Medium

Middle of the range — noticeable on fine hair, light on coarse hair.

Oils and butters None

No oils or butters in the list.

Humidity resistance Claimed

The brand claims humidity resistance; the ingredient list cannot confirm it.

Needs detergent to remove Yes

Water-insoluble silicones or waxes: a detergent wash is what removes them.

Fast-drying alcohol None

No fast-drying alcohol in the list.

Fragrance Prominent

Fragrance sits in the first eight ingredients — a larger share of the formula.

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
Cyclopentasiloxane silicone The shine system Buildup
Dimethicone silicone The shine system Buildup
Dimethicone Crosspolymer film former Lays down the film that holds a shape Buildup
Dimethiconol silicone The shine system Buildup
FragranceParfum (Fragrance) fragrance The scent Fragrance
Benzyl Benzoate fragrance The scent Fragrance
Hexyl Cinnamal fragrance The scent Fragrance
Methyl 2-Octynoate fragrance The scent Fragrance
Limonene fragrance The scent Fragrance
Linalool fragrance The scent Fragrance
What the list leaves out, and what it carriesThe list carries no sulfates or drying alcohols. No protein — a moisture formula, not a repair one. Fragrance is on the label. Water-insoluble silicones — needs a detergent wash to remove.
Full ingredient list (10)

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 Cyclopentasiloxane
    General function

    A light, fast-evaporating silicone that spreads other ingredients then leaves. It gives serums their weightless glide.

    Leading ingredient

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

    May suitBuild-up-sensitive routines

    It leaves the hair by evaporating rather than by being washed off, so it is not part of what accumulates.

    May suitClimate-sensitive or frizz-prone hair

    A surface film slows how quickly humidity reaches the cortex, which is what limits swelling-driven frizz in damp air.

    May suitFine or easily flattened hair

    A cyclic silicone evaporates after it has spread the formula, so it carries the other ingredients without leaving weight behind.

    PubChem
    • silicone
    • emollient
  • 2 Dimethicone
    General function

    The most common conditioning silicone. It coats the strand for shine, slip, and frizz control, and needs a detergent (not just water) to wash out.

    Leading ingredient

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

    May suitClimate-sensitive or frizz-prone hair

    A surface film slows how quickly humidity reaches the cortex, which is what limits swelling-driven frizz in damp air.

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

    Lays a smooth film along the cuticle, which lowers combing friction and flattens the surface irregularities that read as frizz.

    May not suitBuild-up-sensitive routines

    Dimethicone does not disperse in water. On a routine that skips detergent it stays on the hair and accumulates wash after wash.

    • silicone
    • emollient
    • conditioning agent
  • 3 Dimethicone Crosspolymer
    General function

    A synthetic film-forming polymer. Polymers of this kind dry to a continuous film on the hair, which is how a styling product holds a shape.

    Leading ingredient

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

    May suitClimate-sensitive or frizz-prone hair

    A surface film slows how quickly humidity reaches the cortex, which is what limits swelling-driven frizz in damp air.

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

    A crosslinked or hydroxyl-terminated silicone lays a continuous film, which is the most durable surface smoothing this class offers.

    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.

    • film former
    • polymer
    • silicone
  • 4 Dimethiconol
    General function

    A high-shine silicone often paired with dimethicone for a smoother, glossier finish.

    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 surface film slows how quickly humidity reaches the cortex, which is what limits swelling-driven frizz in damp air.

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

    Lays a smooth film along the cuticle, which lowers combing friction and flattens the surface irregularities that read as frizz.

    May not suitBuild-up-sensitive routines

    Dimethicone does not disperse in water. On a routine that skips detergent it stays on the hair and accumulates wash after wash.

    PubChem
    • silicone
    • emollient
  • ▾Below about this point, order stops being meaningful — these are typically used at 1% or less.
  • 5 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
  • 6 Benzyl Benzoate
    General function

    A fragrance component with a faint balsamic scent, named separately on the label because it is a recognised contact 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
  • 7 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
  • 8 Methyl 2-Octynoate
    General function

    A green, violet-like fragrance component named separately on the label 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
  • 9 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
  • 10 Linalool
    General function

    A floral fragrance component listed separately as a recognised contact 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

What the whole list adds up to

  • 6 fragrances
  • 5 named fragrance allergens
  • 4 silicones
  • 3 emollients
  • 1 conditioning agent
  • 1 film former
  • 1 polymer
  • 1 declared fragrance

Ingredient list captured 2026-08-26. Formulas change — check the package in your hand when an ingredient matters to you.

Price · 2 oz

Commonly seen about $29 Midpoint $29 · 5 stores · checked Aug 30
Good value under $6 Under $2.93/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 $6 line; products that do this job typically go for about $9 at this size.

Show the price ladder
Where we’ve seen it6 listings · 6 stores

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. 2 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. Commonly seen is the middle half of current prices for the 2 oz at recognised stores — the cheapest quarter and the dearest quarter are left out, so one sale or one overpriced listing can’t move it.
  3. Good value under $6 comes from the 7 products we score as doing the same job as this one. A quarter of them cost less than $2.93/oz; at 2 oz that is $6. Under that line you are paying less than most of them.
  4. About $9 is what those same products typically cost at this size — the midpoint of their prices per ounce, scaled to 2 oz.

Formula

Formula score
8 of 10

Sold through salons at a price 6 products that do the same job undercut — the distribution is part of what you are paying for.

How the score is counted
  • 6 products that do the same job cost less per ounce
  • Costs more per ounce than 75% of the 77 serums we’ve priced
  • Covers 4 of the 6 things a serum should do
  • Reviewers mention 3 things they like about how it performs
  • A shine systemThe silicone, oil, or ester that produces gloss.3 pts
  • A weightless carrierDelivers the shine without leaving grease.2 pts
  • Oils or butters in the working zoneSoftens the strand rather than just coating it.2 pts
  • An antioxidantKeeps the oils in the bottle from going off.1 pt
  • No drying alcohol in the first threeFast drying without leading on alcohol.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, for less

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.

Paul MitchellLowest cost per oz Clear Smoothing Serum (Blowout Primer) $2.35/oz $12.15/oz less
  • Fragrance-free
  • Unscented
  • Protein-free
· Same function
Differs
  • Unscented
  • 5.1 oz bottle
Compare
Paul MitchellClose function Super Skinny Serum $4.17/oz $10.33/oz less
  • Heat protect
  • Protein-free
  • Alcohol-free
Differs
  • 5.1 oz bottle
  • Sold online
Compare
WellaClose function Light Luminous Reflective Oil $4.74/oz $9.76/oz less
  • Protein-free
  • Shine
  • Alcohol-free
Function
  • Oils and butters
Also
  • Floral scent
  • Prestige tier
  • 3.4 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, not the lowest cost
Best user

Hair that stiffens on protein who want a protein-free formula and shine

Biggest tradeoff

Not ideal for anyone sensitive to fragrance, curly-method routines, or people shopping on a budget

Best alternative if not

Consider Paul Mitchell Clear Smoothing Serum (Blowout Primer), for similar results 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.

2
SupportedBacked by ingredients
0
Partly supportedSome supporting logic
3
Stated by brandNo clear evidence
0
Potential conflictFormula works against claim
shine-enhancing smoothing gloss

Silicones or film formers smooth the cuticle, which is the usual mechanism.

  • Cyclopentasiloxane
  • Dimethicone
  • Dimethicone Crosspolymer
Supported

Smoother strands, less frizz.

sleek and smooth finish

Silicones or film formers smooth the cuticle, which is the usual mechanism.

  • Cyclopentasiloxane
  • Dimethicone
  • Dimethicone Crosspolymer
Supported

Smoother strands, less frizz.

72-hour humidity resistance

Humidity resistance is measured in a lab, not read off a label; film formers can help.

  • Cyclopentasiloxane
  • Dimethicone
  • Dimethicone Crosspolymer
Stated by brand

May help, but not measurable here.

reduces styling breakage

No protein or bond ingredient appears in the list.

—

Stated by brand

Can’t be confirmed from label.

thermal protection up to 450°F

Heat protection is a performance claim; an ingredient list cannot confirm it.

  • Cyclopentasiloxane
  • Dimethicone
  • Dimethicone Crosspolymer
Stated by brand

Only lab testing can show 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.

A fine straight-haired reviewer with bleached and dyed damage says it leaves hair shiny, soft, and smooth all day after damp application and a later pass before heat styling.

A wavy/curly-haired shopper says it worked well on frizz during humid Florida weather.

A long-time Florida user says a little goes a long way, likes the scent, and finds it effective at taming frizzy hair.

A wavy-haired customer likes the bright shine but reports that the pump cap broke on first opening.

More from Kenra Professional

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.
  • 2 sources consulted for this product (1 manufacturer or regulatory, 1 retailer, 0 editorial), last checked 2026-08-26.
  • Ingredient references are linked for 7 of 10 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 2026-08-27.

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