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Side by side

Kevin Murphy SMOOTH.AGAIN.WASH vs Marc Anthony Argan Oil Hydrating Shampoo

98% function match · 12 of the 13 functions we compared match Formula overlap 55%. Kevin Murphy SMOOTH.AGAIN.WASH and Marc Anthony Argan Oil Hydrating Shampoo share 4 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
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When each one is the right call

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

  • SMOOTH.AGAIN.WASH — colour-treated hair
  • Argan Oil Hydrating Shampoo — colour-treated hair

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 SMOOTH.AGAIN.WASH — 8.45 oz container Kevin Murphy

SMOOTH.AGAIN.WASH

  • Shampoo
  • Salon
  • Sulfate-free
  • Moisture-rich
Marc Anthony Argan Oil Hydrating Shampoo — 8.45 oz container Marc Anthony

Argan Oil Hydrating Shampoo

  • Shampoo
  • Drugstore
  • Sulfate-free
  • Moisture-rich
Price, size & price per ounce
$10.93 8.45 oz · $6.09/oz
$5.10 8.45 oz · $0.60/oz
Value / price positioning
Same job for less elsewhere $$$$$ Salon tier · costs more than 98% of the 805 shampoos we’ve priced
Lower cost than most shampoos $$$$$ Drugstore tier · costs less than 85% of the 805 shampoos we’ve priced
Best for hair types
All types Nothing in the formula or the claims narrows this to one pattern. Your hair
All types Nothing in the formula or the claims narrows this to one pattern. Your hair
Moisture level Same
High Humectants near the top — water-binding is a headline mechanism here. Your hair
High Humectants near the top — water-binding is a headline mechanism here. Your hair
Cleansing strength Same
Strong Removes oil, buildup, and most residue — a reset wash. Your hair
Strong Removes oil, buildup, and most residue — a reset wash. Your hair
Slip / detangling Same
Moderate Conditioning agents are present, lower in the list. Your hair
Moderate Conditioning agents are present, lower in the list. Your hair
Weight on hair
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 Same
Minor Protein appears, low enough to be a supporting ingredient. Your hair
Minor Protein appears, low enough to be a supporting ingredient. Your hair
Silicone / wax buildup Same
High Water-insoluble silicones or waxes: a detergent wash is what removes them. Your hair
High Water-insoluble silicones or waxes: a detergent wash is what removes them. Your hair
Clarifying wash needed
Moderate Your hair
Moderate Your hair
Expected lather Same
High Thick foam that spreads quickly through the hair. Your hair
High Thick foam that spreads quickly through the hair. Your hair
Scalp active Same
None No over-the-counter scalp active. Your hair
None No over-the-counter scalp active. Your hair
Hard-water defence Same
Chelators present Chelators are present — they bind hard-water and pool minerals. Your hair
Chelators present Chelators are present — they bind hard-water and pool minerals. Your hair
Formula completeness
out of 10
Complete for its job
out of 10
Complete for its job
Who should choose this
  • Colour-treated hairthat fades faster in a sulfate wash
  • Fast-oiling scalpsthat need a real reset wash
  • Dry, thirsty hairhumectants and emollients both sit up front
  • Hard waterand swimmers dealing with mineral deposit
  • Colour-treated hairthat fades faster in a sulfate wash
  • Fast-oiling scalpsthat need a real reset wash
  • Dry, thirsty hairhumectants and emollients both sit up front
  • Hard waterand swimmers dealing with mineral deposit
Why you might skip it
  • Scents bother youthis product carries a scent
  • Curly-method routinesthese silicones need a detergent to remove
  • Dry or damaged haira strong detergent system strips as it cleans
  • Scents bother youthis product carries a scent
  • Curly-method routinesthese silicones need a detergent to remove
  • Dry or damaged haira strong detergent system strips as it cleans
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
Shampoo
Shampoo
Line
Smooth Again
—
Where to buy
Brand website
Brand website
Free of
  • sulfate-free
  • sulfate-free
Vegan
Not vegan · ingredient list
Not vegan · ingredient list
Cruelty-free
Cruelty-free · PETA-listed
Cruelty-free · PETA-listed
Scent
Scented, not described
Scented, not described

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

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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

IngredientSMOOTH.AGAIN.WASHArgan Oil Hydrating Shampoo
Water
Neutral
#1Leading
#1Leading
Sodium C14-16 Olefin Sulfonate
Cleanses
#3Leading
#2Leading
Cocamidopropyl Betaine
Cleanses
#4Supporting
#4Supporting
Glycerin
Moisturizes
#5Supporting
#5Supporting
Phenoxyethanol
Stabilizes
#37Below the 1% line
#8Below the 1% line
Fragrance
Fragrance
#41Below the 1% line
#10Below the 1% line
Sodium Benzoate
Stabilizes
#39Below the 1% line
#15Below the 1% line

What only one of them carries

SMOOTH.AGAIN.WASH

Argan Oil Hydrating Shampoo

Full ingredient list — SMOOTH.AGAIN.WASH (44)
Full ingredient list — Argan Oil Hydrating Shampoo (45)

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.

VerdictsSMOOTH.AGAIN.WASHArgan Oil Hydrating Shampoo
Supported
3
5
Partly supported
0
1
Stated by brand
0
3
Potential conflict
0
0

SMOOTH.AGAIN.WASH

  • Tame unruly tresses, and fight back against frizz with our targeted smoothing shampooSupportedSmoother strands, less frizz.
  • Nourishes and refines thick, coarse and unruly hairSupportedHelps hair feel hydrated.
  • Delivers all-over softness and a stronger, smoother, shinier-looking finishSupportedSmoother strands, less frizz.

Argan Oil Hydrating Shampoo

  • Cleanses hair and scalpStated by brandCan’t be confirmed from label.
  • Protects from environmental damageStated by brandCan’t be confirmed from label.
  • Controls frizzSupportedSmoother strands, less frizz.
  • HydratesSupportedHelps hair feel hydrated.
  • Revives shineSupportedReflects light for visible shine.
  • StrengthensPartly supportedSupports the surface, not a treatment.
  • Paraben-freeSupportedPreserved without parabens.
  • Sulfate-freeSupportedGentler on colour and coils.
  • Phthalate-freeStated by brandCan’t be confirmed from label.

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 frizz control. Marc Anthony Argan Oil Hydrating Shampoo draws complaints about dryness.

SMOOTH.AGAIN.WASH

Tames frizz on thick, coarse, or curly hair, especially in humid climates

curly/humid-climate reviewers (e.g. Texas)

Improves manageability of fine, unruly, or aging hair texture over repeat use

long-term repeat purchasers

Some reviewers find it hard to distinguish results from the brand's Killer Curls wash

reviewers who also use Killer Curls line

Argan Oil Hydrating Shampoo

The product has a pleasant and noticeable fragrance that reviewers consistently describe as amazing.

general appreciation for scent

Leaves hair feeling soft and healthy with improved overall texture and appearance.

general users noticing improvements after regular use

Reduces frizz and adds shine to dry and damaged hair without the product feeling heavy.

people with damaged, burnt or frizz-prone hair

The newer reformulated version with added alcohol causes hair dryness compared to the original formula.

long-term users comparing old and new formulas

Curly hair results are mixed, with some noticing reduced frizz and improved texture while others experience curl loss.

people with curly and textured hair types

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.

$0.60/oz vs $6.09/oz — Kevin Murphy SMOOTH.AGAIN.WASH costs about 10× more per ounce than Marc Anthony Argan Oil Hydrating Shampoo.

$0.00/oz median $1.47/oz $17.29/oz $6.09/oz SMOOTH.AGAIN.WASH $0.60/oz Argan Oil Hydrating Shampo

Every mark sits on one distribution because these are compared against the same set: 805 shampoos with a computable unit price.

Value readSMOOTH.AGAIN.WASHArgan Oil Hydrating Shampoo
Label
Same job for less elsewhereYou are paying above the range for a formula close to several lower-priced options.
Lower cost than most shampoosCosts less per ounce than most shampoos we have researched.

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.

SMOOTH.AGAIN.WASH vs Hydration ShampooPattern Beauty · 94% function matchArgan Oil Hydrating Shampoo vs Coconut & Shea Nourishing ShampooMarc Anthony · 96% function matchSMOOTH.AGAIN.WASH vs Coconut & Shea Nourishing ShampooMarc Anthony · 94% function matchArgan Oil Hydrating Shampoo vs YouthLock Shampoo Formulated With CollagenJoico · 96% function matchSMOOTH.AGAIN.WASH vs YouthLock Shampoo Formulated With CollagenJoico · 94% function matchArgan Oil Hydrating Shampoo vs Defy Damage Protective ShampooJoico · 96% function matchSMOOTH.AGAIN.WASH vs Defy Damage Protective ShampooJoico · 94% function matchArgan Oil Hydrating Shampoo vs Bonding ShampooVerb · 95% function match

SMOOTH.AGAIN.WASH · Argan Oil Hydrating Shampoo · All shampoos 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.
  • 11 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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