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Side by side

Kevin Murphy KILLER.CURLS RINSE vs Kevin Murphy PLUMPING.RINSE

50% function match · 4 of the 10 functions we compared match Formula overlap 41%. Kevin Murphy KILLER.CURLS RINSE and Kevin Murphy PLUMPING.RINSE share 2 ingredients among each other's most prominent.

Based on your consultation

Which of these fits your hair?

We check your pattern, moisture need, scalp, fragrance tolerance, weight sensitivity and more against each formula — and say which one lines up.

Your profile at a glance

  • Your answers appear here
  • Your answers appear here
  • Your answers appear here
  • Your answers appear here

When each one is the right call

What each formula is built for, from its own ingredient list.

  • KILLER.CURLS RINSE — protein-sensitive hair
  • PLUMPING.RINSE — maximum slip

Side by side

Every trait, aligned

One row per trait, read from each product’s own ingredient list and record. A dash means we have not researched that field for that product — it is not a “no”.

Trait
Kevin Murphy KILLER.CURLS RINSE — 8.45 oz container Kevin Murphy

KILLER.CURLS RINSE

  • Conditioner
  • Salon
  • Sulfate-free
  • Silicone-free
Kevin Murphy PLUMPING.RINSE — 8.45 oz container Kevin Murphy

PLUMPING.RINSE

  • Conditioner
  • Prestige
  • Sulfate-free
  • Moisture-rich
Price, size & price per ounce
$37 8.45 oz · $4.38/oz
$48 8.45 oz · $5.68/oz
Value / price positioning
Same job for less elsewhere $$$$$ Salon tier · costs more than 87% of the 689 conditioners we’ve priced
Same job for less elsewhere $$$$$ Prestige tier · costs more than 93% of the 689 conditioners we’ve priced
Best for hair types
Wavy–Coily The brand’s own claims name curly or textured hair. Your hair
All types Nothing in the formula or the claims narrows this to one pattern. Your hair
Moisture level Differs
Moderate Humectants in the working part of the formula. Your hair
High Humectants near the top — water-binding is a headline mechanism here. Your hair
Oils and butters Differs
Low Oils are present, but low enough to be a finishing touch. Your hair
High Butters near the top: a heavy, softening formula. Your hair
Slip / detangling Same
High Conditioning agents sit high in the list — this is a detangling formula. Your hair
High Conditioning agents sit high in the list — this is a detangling formula. Your hair
Weight on hair Same
Medium Middle of the range — noticeable on fine hair, light on coarse hair. Your hair
Medium Middle of the range — noticeable on fine hair, light on coarse hair. Your hair
Fragrance
Present Fragrance is listed; it sits below the working ingredients. Your hair
Present Fragrance is listed; it sits below the working ingredients. Your hair
Protein Differs
None No protein or amino acids in the list. Your hair
Minor Protein appears, low enough to be a supporting ingredient. Your hair
Silicone / wax buildup Differs
None Nothing here needs a detergent wash to remove. Your hair
High Water-insoluble silicones or waxes: a detergent wash is what removes them. Your hair
Clarifying wash needed
Moderate Your hair
High Your hair
Hard-water defence Same
None No chelating agent in the list. Your hair
None No chelating agent in the list. Your hair
Formula completeness
out of 10
Complete for its job
out of 10
Complete for its job
Who should choose this
  • Protein-sensitive hairthat stiffens when protein is added
  • Maximum slipfor hair that tangles the moment it is wet
  • Dry, thirsty hairhumectants and emollients both sit up front
  • Curly-method routinesno sulfates and no water-insoluble silicones
  • Maximum slipfor hair that tangles the moment it is wet
  • Dry, thirsty hairhumectants and emollients both sit up front
  • Cuticle-smoothing pHa pH adjuster brings it to the acidic range hair prefers
  • A wide range of haira middle-of-the-range weight
Why you might skip it
  • Scents bother youthis product carries a scent
  • Hair that needs proteinthere is none in this list
  • Dry or very humid airwhere heavy humectants work against you
  • Scents bother youthis product carries a scent
  • Curly-method routinesthese silicones need a detergent to remove
  • Very dry or damaged hairit contains fast-drying alcohol
from the formula stated by the brand reported by reviewers Scale: 1 dot low · 5 dots high, within this product type.
More facts about each one
Type
Conditioner
Conditioner
Line
Killer.Curls
PLUMPING
Where to buy
Brand website · Specialty beauty
Brand website
Free of
  • sulfate-free
  • silicone-free
  • protein-free
  • curly-method compatible
  • sulfate-free
Vegan
—
Not vegan · ingredient list
Cruelty-free
Cruelty-free · PETA-listed
Cruelty-free · PETA-listed
Scent
Scented, not described
Citrus · Fresh & airy

Facts as we recorded them. A dash means we have not researched that field for that product — it is not a "no".

The bottom line

The bottom line depends on your hair

Which of these two suits you is a question about your hair, not about them. The consultation answers it — and tells you what your routine needs around it.

Take the consultation

$49.00 once, for your consultation and hair profile. No subscription, no required purchases.

The detail behind the table

Where the readings above come from: the ingredient lists themselves, each brand’s claims checked against them, what owners report, and cost per ounce in context.

Shared and distinct ingredients

Shared and distinct ingredients

Computed from the ingredient lists as printed. "Shared" means both lists carry it; where it sits on each label is stated, because position is what tells you how much.

What both formulas carry

IngredientKILLER.CURLS RINSEPLUMPING.RINSE
Water
Neutral
#1Leading
#1Leading
Cetearyl Alcohol
Softens
#2Leading
#2Leading
Glycerin
Moisturizes
#6Supporting
#3Leading
Fragrance
Fragrance
#17Below the 1% line
#44Below the 1% line

What only one of them carries

KILLER.CURLS RINSE

PLUMPING.RINSE

Full ingredient list — KILLER.CURLS RINSE (17)
Full ingredient list — PLUMPING.RINSE (47)

Claims check

What each brand says, against what each formula shows

Claims are quoted from each brand. We only mark one supported, partly supported, or conflicting when that product’s ingredient list actually speaks to it.

VerdictsKILLER.CURLS RINSEPLUMPING.RINSE
Supported
2
1
Partly supported
0
0
Stated by brand
0
1
Potential conflict
0
1

KILLER.CURLS RINSE

  • Nourishing Oat Milk conditioner that deeply hydrates and strengthensSupportedHelps hair feel hydrated.
  • Refines texture for soft and bouncy curls that are shiny and definedSupportedReflects light for visible shine.

PLUMPING.RINSE

  • Treat fine, thin or ageing hair to a lavish level of conditioning goodnessStated by brandCan’t be confirmed from label.
  • Delivers essential nourishment to help restore thickness, and boost volumePotential conflictLikely to weigh hair down.
  • Imparting sublime shine and silky-soft textureSupportedReflects light for visible shine.

What owners say

What people report

Recurring themes our researchers wrote in their own words from sourced reviews. We do not store or scrape star ratings, and we never balance one product’s themes against another’s by inventing them.

Both praised for a light feel.

KILLER.CURLS RINSE

Rinses clean without weighing down fine or fine-curly hair

fine curly-haired reviewer

Softens and de-frizzes curly/wavy hair when used with the matching shampoo

curly and wavy hair reviewers

Noticeably improves moisture and softness versus prior conditioners

general reviewers

PLUMPING.RINSE

Helps with thinning hair, fantastic results, highly recommended

thinning hair concern

Major improvement over prior conditioner; noticeable volume boost

switched from another brand

Works well against flat hair caused by mineral-heavy, low-humidity water conditions when paired with matching wash

hard-water/low-humidity climate (Albuquerque)

Price check

Cost per ounce, in context

Cost per ounce against every product of this type we have priced, each at the size it is most often sold in. Value labels are computed from that percentile and from how many products that do the same job cost less; they are comparisons, not judgements about a brand.

$4.38/oz vs $5.68/oz — Kevin Murphy PLUMPING.RINSE costs about 1.3× more per ounce than Kevin Murphy KILLER.CURLS RINSE.

$0.09/oz median $1.60/oz $56.25/oz $4.38/oz KILLER.CURLS RINSE $5.68/oz PLUMPING.RINSE

Every mark sits on one distribution because these are compared against the same set: 689 conditioners with a computable unit price.

Value readKILLER.CURLS RINSEPLUMPING.RINSE
Label
Same job for less elsewhereYou are paying above the range for a formula close to several lower-priced options.
Same job for less elsewhereYou are paying above the range for a formula close to several lower-priced options.

Computed from cost per ounce against every product of this type we have priced, and from how many products that do the same job cost less. It is a comparison, not a judgement about the brand.

Compare with something else

Close formulas to each of these, as their own comparison pages.

KILLER.CURLS RINSE vs Kids Curly Hair ConditionerAveeno · 95% function matchPLUMPING.RINSE vs Aunt Jackie's In Control 'Anti-Poof' Moisturizing & Softening ConditionerAunt Jackie's · 97% function matchKILLER.CURLS RINSE vs Sap Moss Weightless Hydration ConditionerAveda · 95% function matchPLUMPING.RINSE vs Repair Bond +Rescuplex ConditionerMarc Anthony · 96% function matchKILLER.CURLS RINSE vs Full ConditionerLiving Proof · 95% function matchPLUMPING.RINSE vs Daily Cleanse ConditionerFairy Tales · 95% function matchKILLER.CURLS RINSE vs Coco Crème Creamy ConditionerCarol's Daughter · 95% function matchPLUMPING.RINSE vs Curly-Q Hydrating ConditionerFairy Tales · 95% function match

KILLER.CURLS RINSE · PLUMPING.RINSE · All conditioners in the library

How this page was made

  • This page is assembled from the same researched records the individual product pages render: identity, each ingredient list as printed, each brand's own claims, dated price observations, and review themes written in our researchers' own words. Nothing on it is written per comparison.
  • We do not rank these against each other. Which of them suits you depends on your hair, and that is what the consultation works out.
  • The formula similarity percentage is a stored, precomputed number: position-weighted overlap of the two ingredient lists blended with agreement on the attributes we derive. It measures how alike two formulas are, not how well either works.
  • 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.
  • 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.
  • 8 sources were consulted across the products on this page.
  • Ingredient order tells you relative amount only above roughly 1%. Prices are observations on the dates shown and change without notice. We do not sell these products and take no placement fees.
  • This is cosmetic information, not medical advice, and nothing here diagnoses or treats a health condition.

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