Side by side
R+Co METAL DETECTOR Detox Shampoo vs R+Co PRIMARY COLOR SHAMPOO
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.
- METAL DETECTOR Detox Shampoo — colour-treated hair
- PRIMARY COLOR SHAMPOO — unscented
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”.
- Colour-treated hairthat fades faster in a sulfate wash
- Fast-oiling scalpsthat need a real reset wash
- Curly-method routinesno sulfates and no water-insoluble silicones
- Hard waterand swimmers dealing with mineral deposit
- Unscentedfree of strong smells
- Short ingredient listsfifteen ingredients or fewer
- Scents bother youthis product carries a scent
- Dry or damaged haira strong detergent system strips as it cleans
- Stretching wash dayswaxes stay until a detergent wash removes them
- Hair that tangles wetnothing here reduces combing force
- Tight budgetsit sits in the upper price tiers
- If scent matters to younothing is added here
More facts about each one
- sulfate-free
- silicone-free
- curly-method compatible
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.
$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 only one of them carries
METAL DETECTOR Detox Shampoo
PRIMARY COLOR SHAMPOO
- placeholder
Full ingredient list — METAL DETECTOR Detox Shampoo (54)
-
1
Water
- solvent
-
2
Sodium Cocoyl Isethionate
- mild anionic cleanser
- cleanser
-
3
Sodium Lauroyl Methyl Isethionate
- mild anionic cleanser
- cleanser
-
4
Sodium Lauroamphoacetate
- amphoteric cleanser
- secondary cleanser
- cleanser
-
5
Cocamide MIPA
- secondary cleanser
- nonionic cleanser
- thickener
-
6
Acrylates Copolymer
- film former
- polymer
-
7
Propanediol
- humectant
- solvent
-
8
Sodium Polyitaconate
- film former
- polymer
- Below about this point, order stops being meaningful — these are typically used at 1% or less.
-
9
Sodium Citrate
- pH adjuster
- hard-water chelator
-
10
Fragrance
- fragrance
- declared fragrance
-
11
Phenoxyethanol
- preservative
-
12
Glycol Distearate
- opacifier
- emollient
-
13
Coco-Glucoside
- nonionic cleanser
- cleanser
-
14
Glyceryl Oleate
- emulsifier
- emollient
-
15
Sodium Benzoate
- preservative
-
16
Polyquaternium-6
- film former
- polymer
- conditioning agent
-
17
Guar Hydroxypropyltrimonium Chloride
- conditioning agent
- polymer
- gum
-
18
Trisodium Ethylenediamine Disuccinate
- hard-water chelator
-
19
Caprylyl Glycol
- preservative
- humectant
-
20
Trehalose
- humectant
-
21
Salvia Hispanica Seed Extract
- botanical extract
-
22
Disteareth-75 IPDI
- thickener
- polymer
-
23
Tocopheryl Acetate
- antioxidant
- vitamin
-
24
Oryza Sativa (Rice) Bran Extract
- botanical extract
- antioxidant
-
25
Sapindus Mukorossi Fruit Extract
- botanical extract
-
26
Tetrasodium Glutamate Diacetate
- hard-water chelator
-
27
Citric Acid
- pH adjuster
- hard-water chelator
-
28
Caprylyl/Capryl Glucoside
- nonionic cleanser
- cleanser
-
29
Fumaric Acid
- pH adjuster
-
30
Hydrolyzed Rice Protein
- film former
- protein
- hydrolysed protein
-
31
Tocopherol
- antioxidant
- vitamin
-
32
Ethyl Linoleate
- light ester
- emollient
-
33
Helianthus Annuus (Sunflower) Extract
- botanical extract
-
34
Ethyl Oleate
- light ester
- emollient
-
35
Benzyl Alcohol
- preservative
- solvent
-
36
Euterpe Oleracea Fruit Oil
- oil
- emollient
-
37
Simmondsia Chinensis (Jojoba) Seed Oil
- emollient
- light ester
- oil
- wax
-
38
Silybum Marianum Ethyl Ester
- light ester
- emollient
-
39
Caprylic Acid
- preservative
- emulsifier
-
40
Xylitol
- humectant
-
41
Rosemary Leaf Extract
- botanical extract
-
42
Stearic Acid
- emulsifier
- thickener
- fatty alcohol
-
43
Crambe Abyssinica Seed Oil
- oil
- emollient
-
44
Helianthus Annuus (Sunflower) Seed Oil
- oil
- emollient
-
45
Persea Gratissima (Avocado) Oil
- oil
- emollient
- 46 Hydrogenated Palm Glycerides Citrate
-
47
Potassium Hydroxide
- pH adjuster
-
48
Limonene
- fragrance
- named fragrance allergen
-
49
Linalool
- fragrance
- named fragrance allergen
-
50
Tetramethyl Acetyloctahydronaphthalenes
- fragrance
-
51
Linalyl Acetate
- fragrance
- named fragrance allergen
-
52
acetyl cedrene
- fragrance
-
53
Hexamethylindanopyran
- fragrance
-
54
Pinene
- fragrance
Full ingredient list — PRIMARY COLOR SHAMPOO (1)
- 1 placeholder
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.
METAL DETECTOR Detox Shampoo
Gently helps neutralize impurities such as heavy metals, hard water minerals, and buildup
SupportedHandles mineral-heavy water.Color-safe and formulated to cleanse without stripping natural oils
SupportedLess fade per wash.
PRIMARY COLOR SHAMPOO
Protects, strengthens, and enhances vibrancy of color-treated hair
Stated by brandCan’t be confirmed from label.Preserves true-to-tone color, increases shine
Stated by brandCan’t be confirmed from label.protects from 450F heat and UV rays
Stated by brandCan’t be confirmed from label.reduce breakage by 89%
Stated by brandOnly the brand’s testing shows this.
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.
R+Co METAL DETECTOR Detox Shampoo draws complaints about dryness.
METAL DETECTOR Detox Shampoo
Several reviewers used it as a periodic (roughly weekly) clarifying treatment alongside their regular shampoo rather than a daily wash
curly-hair and general usersA subset of reviewers report scalp itchiness subsiding after switching to this shampoo from their regular one
users with prior scalp itchinessReviewers in hard-water areas report it visibly reduces buildup and restores softness/shine, some noting it fixed dulled or well-water-affected hair
hard-water/well-water households, some with silver or curly hairAt least one reviewer found it slightly drying and recommended pairing with a masque or leave-in conditioner to compensate
general userPRIMARY COLOR SHAMPOO
Scent called out repeatedly as a favorite feature
Strong loyalty/repeat-purchase sentiment, several calling it their permanent go-to color shampoo
Lightweight formula reported to add volume rather than flatten hair
straight/wavy hairPraised for color-safe cleansing that still leaves hair feeling clean and light
color-treated hairPrice 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.
$4.24/oz vs $6.12/oz — R+Co PRIMARY COLOR SHAMPOO costs about 1.4× more per ounce than R+Co METAL DETECTOR Detox Shampoo.
Every mark sits on one distribution because these are compared against the same set: 817 shampoos with a computable unit price.
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.
METAL DETECTOR Detox Shampoo · PRIMARY COLOR 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.
Still unsure? Take your consultation or browse more products.
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