Side by side
Bosley mendXtend Strengthening Shampoo vs Curlsmith Frizz Control Shampoo
99% function match · 12 of the 13 functions we compared match Formula overlap 52%. Bosley mendXtend Strengthening Shampoo and Curlsmith Frizz Control Shampoo share 4 ingredients among each other's most prominent.
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.
- mendXtend Strengthening Shampoo — colour-treated hair
- Frizz Control 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”.
Compared at different sizes — 33.8 oz against 12 oz. Per-ounce prices favour the larger bottle.
- Colour-treated hairthat fades faster in a sulfate wash
- Protein-sensitive hairthat stiffens when protein is added
- Dry, thirsty hairhumectants and emollients both sit up front
- 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
- Curly-method routinesno sulfates and no water-insoluble silicones
- Hard waterand swimmers dealing with mineral deposit
- 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
- Hair that needs proteinthere is none in this list
- Dry or very humid airwhere heavy humectants work against you
More facts about each one
- sulfate-free
- silicone-free
- protein-free
- curly-method compatible
- sulfate-free
- silicone-free
- protein-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 both formulas carry
What only one of them carries
mendXtend Strengthening Shampoo
Full ingredient list — mendXtend Strengthening Shampoo (43)
-
1
Water
- solvent
-
2
Cocamidopropyl Betaine
- amphoteric cleanser
- secondary cleanser
- cleanser
-
3
Glycerin
- humectant
-
4
Sodium Cocoyl Isethionate
- mild anionic cleanser
- cleanser
-
5
Lauryl Lactyl Lactate
- light ester
- emollient
- conditioning agent
-
6
Decyl Glucoside
- nonionic cleanser
- cleanser
-
7
Sodium Lauroyl Sarcosinate
- mild anionic cleanser
- cleanser
-
8
Sodium Lauroyl Methyl Isethionate
- mild anionic cleanser
- cleanser
-
9
Acrylates Copolymer
- film former
- polymer
- Below about this point, order stops being meaningful — these are typically used at 1% or less.
-
10
Fragrance
- fragrance
- declared fragrance
-
11
Macrocystis Pyrifera (Kelp) Extract
- botanical extract
-
12
Serenoa Serrulata Fruit Extract
- botanical extract
-
13
Malus Domestica Fruit Cell Culture Extract
- botanical extract
-
14
Citrus Grandis (Grapefruit) Fruit Extract
- botanical extract
-
15
Cucurbita Pepo (Pumpkin) Seed Extract
- botanical extract
-
16
Hydrolyzed Hyaluronic Acid
- humectant
-
17
Helianthus Annuus (Sunflower) Seed Oil
- oil
- emollient
-
18
Carthamus Tinctorius (Safflower) Seed Oil
- oil
- emollient
-
19
Porphyra Umbilicalis Extract
- botanical extract
-
20
Caesalpinia Spinosa Gum
- gum
- thickener
-
21
Ascophyllum Nodosum Extract
- botanical extract
-
22
Guar Hydroxypropyltrimonium Chloride
- conditioning agent
- polymer
- gum
-
23
Hexyl Cinnamal
- fragrance
- named fragrance allergen
-
24
Xanthan Gum
- gum
- thickener
- film former
-
25
Tocopherol
- antioxidant
- vitamin
-
26
Tocopheryl Acetate
- antioxidant
- vitamin
-
27
Lecithin
- emulsifier
- emollient
-
28
Potassium Sorbate
- preservative
-
29
Citric Acid
- pH adjuster
- hard-water chelator
-
30
Sodium Methyl Oleoyl Taurate
- mild anionic cleanser
- cleanser
-
31
Phenoxyethanol
- preservative
-
32
Coco-Glucoside
- nonionic cleanser
- cleanser
-
33
Lauryl Glucoside
- nonionic cleanser
- cleanser
-
34
Polyquaternium-10
- conditioning agent
- film former
- polymer
-
35
Chlorphenesin
- preservative
-
36
Trisodium Ethylenediamine Disuccinate
- hard-water chelator
-
37
Sodium Benzoate
- preservative
-
38
Mica
- colourant
- mineral
- opacifier
-
39
Linalool
- fragrance
- named fragrance allergen
-
40
Polyquaternium-7
- conditioning agent
- film former
- polymer
-
41
Titanium Dioxide
- colourant
- opacifier
- mineral
-
42
Menthol
- fragrance
- active
-
43
Limonene
- fragrance
- named fragrance allergen
Full ingredient list — Frizz Control Shampoo (36)
-
1
Water
- solvent
-
2
Cocamidopropyl Betaine
- amphoteric cleanser
- secondary cleanser
- cleanser
-
3
Glycerin
- humectant
-
4
Sodium Methyl Cocoyl Taurate
- mild anionic cleanser
- cleanser
-
5
Coco-Glucoside
- nonionic cleanser
- cleanser
-
6
Sodium Chloride
- salt
- thickener
-
7
Panthenol
- humectant
- conditioning agent
- vitamin
- Below about this point, order stops being meaningful — these are typically used at 1% or less.
-
8
Helianthus Annuus (Sunflower) Seed Extract
- botanical extract
- antioxidant
-
9
Squalane
- emollient
- conditioning agent
-
10
Argania Spinosa Kernel Oil
- oil
- emollient
-
11
Citrullus Lanatus (Watermelon) Seed Oil
- oil
- emollient
-
12
Cocos Nucifera (Coconut) Seed Butter
- butter
- emollient
- sealant
-
13
Ribes Nigrum (Black Currant) Seed Oil
- oil
- emollient
-
14
Niacinamide
- vitamin
- conditioning agent
-
15
Panthenol
- humectant
- conditioning agent
- vitamin
-
16
Helianthus Annuus (Sunflower) Seed Oil
- oil
- emollient
-
17
Tocopherol
- antioxidant
- vitamin
-
18
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
- thickener
- polymer
- film former
-
19
C9-12 Alkane
- emollient
- solvent
-
20
Coco-Caprylate/Caprate
- light ester
- emollient
-
21
Pentylene Glycol
- humectant
- solvent
- preservative
-
22
Guar Hydroxypropyltrimonium Chloride
- conditioning agent
- polymer
- gum
-
23
Polyquaternium-10
- conditioning agent
- film former
- polymer
-
24
Citric Acid
- pH adjuster
- hard-water chelator
-
25
Behentrimonium Chloride
- conditioning agent
- cleanser
-
26
Laureth-2
- emulsifier
-
27
Sodium Gluconate
- hard-water chelator
-
28
Sodium Benzoate
- preservative
-
29
Potassium Sorbate
- preservative
-
30
Phenoxyethanol
- preservative
-
31
Fragrance
- fragrance
- declared fragrance
-
32
Tetramethyl Acetyloctahydronaphthalenes
- fragrance
-
33
Citrus Limon (Lemon) Peel Oil
- botanical extract
- essential oil
- fragrance
-
34
Limonene
- fragrance
- named fragrance allergen
-
35
Linalool
- fragrance
- named fragrance allergen
-
36
Citrus Aurantium (Orange) Peel Oil
- fragrance
- botanical extract
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.
mendXtend Strengthening Shampoo
Prevents breakage after one use saving up to 1400 hair fibers in 30 days
Stated by brandCan’t be confirmed from label.1.5X stronger strands after one use
Stated by brandOnly the brand’s testing shows this.Strengthens strands from innermost hair layers
Stated by brandCan’t be confirmed from label.Repairs bleach and heat damage
Stated by brandCan’t be confirmed from label.Promotes hair growth
Stated by brandNot something a label can show.
Frizz Control Shampoo
Hydrating frizz-control shampoo that gently cleanses dirt and impurities helping prevent frizz.
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.
mendXtend Strengthening Shampoo
No review themes researched for this product yet.
Frizz Control Shampoo
Cleans the scalp thoroughly while leaving hair soft rather than dry or brittle
general reviewer baseAvoids the buildup that can cause yellowing on gray or color-treated hair
reviewers with gray/color-treated hairEffective for fine, low-porosity hair prone to product buildup
reviewers with fine, low-porosity hairOften bought and used as part of a 3-step system with the matching conditioner and the detox shampoo
general reviewer baseControls frizz in high-humidity conditions without over-moisturizing
reviewers with fine wavy/curly 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.
$1.48/oz vs $2.17/oz — Curlsmith Frizz Control Shampoo costs about 1.5× more per ounce than Bosley mendXtend Strengthening 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.
mendXtend Strengthening Shampoo · Frizz Control 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.
- 7 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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