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Side by side

amika Big Hit Volumizing Shampoo vs R+Co ESSENTIAL SHAMPOO

91% function match · 11 of the 13 functions we compared match Formula overlap 4%. amika Big Hit Volumizing Shampoo and R+Co ESSENTIAL 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
  • 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.

  • Big Hit Volumizing Shampoo — colour-treated hair
  • ESSENTIAL 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
amika Big Hit Volumizing Shampoo — 9.2 oz container amika

Big Hit Volumizing Shampoo

  • Shampoo
  • Salon
  • Sulfate-free
  • Silicone-free
R+Co ESSENTIAL SHAMPOO — 8.5 oz container R+Co

ESSENTIAL SHAMPOO

  • Shampoo
  • Prestige
  • Sulfate-free
  • Silicone-free
Price, size & price per ounce
about $29 9.2 oz · $3.15/oz
$147 8.5 oz · $17.29/oz
Value / price positioning
Same job for less elsewhere $$$$$ Salon tier · costs more than 77% of the 817 shampoos we’ve priced
Same job for less elsewhere $$$$$ Prestige tier · costs more than 100% of the 817 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 Differs
Gentle Removes light dirt and oil without stripping. 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
Light Water-first and light: unlikely to flatten fine 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
Prominent Fragrance sits in the first eight ingredients — a larger share of the formula. Your hair
Protein Same
None No protein or amino acids in the list. Your hair
None No protein or amino acids in the list. Your hair
Silicone / wax buildup Same
None Nothing here needs a detergent wash to remove. Your hair
None Nothing here needs a detergent wash to remove. Your hair
Clarifying wash needed
Moderate Your hair
Low 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
  • Protein-sensitive hairthat stiffens when protein is added
  • Frequent washerswho want gentler cleansing
  • Curly-method routinesno sulfates and no water-insoluble silicones
  • Colour-treated hairthat fades faster in a sulfate wash
  • Protein-sensitive hairthat stiffens when protein is added
  • Fast-oiling scalpsthat need a real reset wash
  • Dry, thirsty hairhumectants and emollients both sit up front
Why you might skip it
  • Scents bother youthis product carries a strong scent
  • Heavy product buildupthis is not a clarifying wash
  • A squeaky-clean feelthis deliberately leaves conditioning behind
  • Scents bother youthis product carries a scent
  • Dry or damaged haira strong detergent system strips as it cleans
  • Hair that needs proteinthere is none in this list
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
Big Hit
ESSENTIAL
Where to buy
Brand website
Sephora · Brand website
Free of
  • sulfate-free
  • silicone-free
  • protein-free
  • curly-method compatible
  • sulfate-free
  • silicone-free
  • protein-free
  • curly-method compatible
Vegan
—
Vegan · brand states
Cruelty-free
Cruelty-free · PETA-listed
—
Scent
Scented, not described
Floral

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

IngredientBig Hit Volumizing ShampooESSENTIAL SHAMPOO
Caffeine
Active
#4Supporting
#21Below the 1% line
Fragrance
Fragrance
#10Below the 1% line
#7Below the 1% line
Limonene
Fragrance
#15Below the 1% line
#41Below the 1% line
Water
Neutral
#38Below the 1% line
#1Leading
Sodium C14-16 Olefin Sulfonate
Cleanses
#29Below the 1% line
#2Leading
Phenoxyethanol
Stabilizes
#21Below the 1% line
#6Below the 1% line

What only one of them carries

Big Hit Volumizing Shampoo

ESSENTIAL SHAMPOO

Full ingredient list — Big Hit Volumizing Shampoo (40)
Full ingredient list — ESSENTIAL SHAMPOO (43)

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.

VerdictsBig Hit Volumizing ShampooESSENTIAL SHAMPOO
Supported
1
1
Partly supported
0
0
Stated by brand
0
1
Potential conflict
0
0

Big Hit Volumizing Shampoo

  • A lightweight, volumizing shampoo that doesnt compromise on hydration for instant and all-day touchable volumeSupportedLeaves room for lift.

ESSENTIAL SHAMPOO

  • An everyday all-star created for all hair types.Stated by brandSee the fit panel instead.
  • Luxe lather, gentle cleansing, optimal hydration.SupportedHelps hair feel hydrated.

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 moisture, the scent, and how it cleanses.

Big Hit Volumizing Shampoo

Fine/thin-hair reviewers report a visible volume boost without weigh-down

fine/thin-hair reviewers

Cleans effectively even for reviewers who wash daily due to oily hair, without over-drying

oily-hair, daily-washing reviewers

Repeat purchasers buy the largest bottle size available

long-term customers

Strong positive fragrance feedback

general reviewers

ESSENTIAL SHAMPOO

Reviewers note a little product goes a long way and avoids the straw-like feeling some other shampoos leave

general

Reviewers frequently praise the fragrance as a standout, floral scent

multiple reviewers across hair types

Several reviewers say it leaves hair soft and shiny after washing

general

Reviewers with fine hair report good lather and cleansing without drying, allowing longer stretches between washes

fine hair

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.

$3.15/oz vs $17.29/oz — R+Co ESSENTIAL SHAMPOO costs about 5.5× more per ounce than amika Big Hit Volumizing Shampoo.

$0.00/oz median $1.48/oz $17.29/oz $3.15/oz Big Hit Volumizing Shampoo $17.29/oz ESSENTIAL SHAMPOO

Every mark sits on one distribution because these are compared against the same set: 817 shampoos with a computable unit price.

Value readBig Hit Volumizing ShampooESSENTIAL SHAMPOO
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.

Big Hit Volumizing Shampoo vs Clean Rinse Clarifying ShampooCamille Rose · 94% function matchESSENTIAL SHAMPOO vs Cantu Avocado Hydrating Sulfate Free ShampooCantu · 100% function matchBig Hit Volumizing Shampoo vs Cantu Avocado Hydrating Sulfate Free ShampooCantu · 91% function matchESSENTIAL SHAMPOO vs Scalp Balancing ShampooMoroccanoil · 98% function matchBig Hit Volumizing Shampoo vs Clarifying ShampooMaui Moisture · 91% function matchESSENTIAL SHAMPOO vs KILLER.CURLS WASHKevin Murphy · 98% function matchBig Hit Volumizing Shampoo vs Superfoods Banana + Coconut Nourishing ShampooBriogeo · 90% function matchESSENTIAL SHAMPOO vs Total Results Glow Mania Color Protecting ShampooMatrix · 96% function match

Big Hit Volumizing Shampoo · ESSENTIAL 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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