Side by side
amika Flash Instant Shine Mask vs amika Hydro Rush Intense Moisture Mask
44% function match · 2 of the 8 functions we compared match Formula overlap 21%. amika Flash Instant Shine Mask and amika Hydro Rush Intense Moisture Mask share 2 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
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When each one is the right call
What each formula is built for, from its own ingredient list.
- Flash Instant Shine Mask — dry, thirsty hair
- Hydro Rush Intense Moisture Mask — protein-sensitive 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”.
- Dry, thirsty hairhumectants and emollients both sit up front
- Sun and colour fadea UV filter is in the list
- Cuticle-smoothing pHa pH adjuster brings it to the acidic range hair prefers
- Vegan and cruelty-freeour researched record has it as both
- 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
- Scents bother youthis product carries a scent
- Curly-method routinesthese silicones need a detergent to remove
- Dry or very humid airwhere heavy humectants work against you
- Scents bother youthis product carries a scent
- Very dry or damaged hairit contains fast-drying alcohol
- Hair that needs proteinthere is none in this list
More facts about each one
- 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.
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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
What only one of them carries
Flash Instant Shine Mask
- Hydrolyzed Linseed Seed
- Vitis Vinifera (Red Vine) Leaf Extract
- Wine Extract
- Glycine Soja (Soybean) Germ Extract
- Scutellaria Baicalensis Root Extract
- Hippophae Rhamnoides (Sea Buckthorn) Fruit Oil
- Silicone Quaternium-8
Full ingredient list — Flash Instant Shine Mask (46)
-
1
Water
- solvent
-
2
Glycerin
- humectant
-
3
Hydrolyzed Linseed Seed
- botanical extract
- 4 Vitis Vinifera (Red Vine) Leaf Extract
-
5
Wine Extract
- botanical extract
-
6
Glycine Soja (Soybean) Germ Extract
- botanical extract
-
7
Scutellaria Baicalensis Root Extract
- botanical extract
- Below about this point, order stops being meaningful — these are typically used at 1% or less.
-
8
Hippophae Rhamnoides (Sea Buckthorn) Fruit Oil
- oil
- emollient
- antioxidant
-
9
Triticum Vulgare (Wheat) Germ Extract
- botanical extract
-
10
Glycine
- amino acid
-
11
Alanine
- amino acid
-
12
Arginine
- amino acid
- humectant
-
13
Aspartic Acid
- amino acid
- pH adjuster
-
14
Histidine
- amino acid
-
15
Isoleucine
- amino acid
-
16
Phenylalanine
- amino acid
-
17
Proline
- amino acid
-
18
Serine
- amino acid
-
19
Threonine
- amino acid
-
20
Valine
- amino acid
-
21
Lactic Acid
- pH adjuster
- humectant
- exfoliant
-
22
Cetrimonium Chloride
- conditioning agent
- cleanser
-
23
Sodium PCA
- humectant
-
24
Sodium Lactate
- humectant
- pH adjuster
-
25
Sodium PCA
- humectant
-
26
Citric Acid
- pH adjuster
- hard-water chelator
-
27
Benzophenone-4
- UV filter
-
28
Lactobacillus Ferment
- preservative
- botanical extract
-
29
Calcium Gluconate
- hard-water chelator
- salt
-
30
Propylene Glycol
- humectant
- solvent
-
31
Polyquaternium-7
- conditioning agent
- film former
- polymer
-
32
Polyquaternium-10
- conditioning agent
- film former
- polymer
-
33
Cellulose
- thickener
- gum
-
34
Polysorbate 20
- solubilizer
- emulsifier
-
35
Propanediol
- humectant
- solvent
-
36
Silicone Quaternium-8
- silicone
- film former
- conditioning agent
-
37
Trideceth-10
- emulsifier
- solubilizer
-
38
Hydroxyethylcellulose
- gum
- thickener
- film former
-
39
Ethylhexylglycerin
- preservative
- emollient
-
40
Gluconolactone
- humectant
- exfoliant
- hard-water chelator
-
41
Sodium Acetate
- salt
- pH adjuster
-
42
Potassium Sorbate
- preservative
-
43
Sodium Benzoate
- preservative
-
44
Benzyl Alcohol
- preservative
- solvent
-
45
Phenoxyethanol
- preservative
-
46
Fragrance
- fragrance
- declared fragrance
Full ingredient list — Hydro Rush Intense Moisture Mask (43)
-
1
Water
- solvent
-
2
Cetearyl Alcohol
- fatty alcohol
- emollient
- thickener
-
3
Cetyl Alcohol
- fatty alcohol
- emollient
- thickener
-
4
Glycerin
- humectant
-
5
Isopropyl Myristate
- light ester
- emollient
-
6
Behentrimonium Chloride
- conditioning agent
- cleanser
-
7
Myristyl Alcohol
- fatty alcohol
- emollient
-
8
Polyester-37
- film former
- polymer
-
9
Ethyl Macadamiate
- light ester
- emollient
-
10
Sodium Hyaluronate
- humectant
-
11
Polyglutamic Acid
- humectant
- film former
-
12
Squalane
- emollient
- conditioning agent
-
13
Butyrospermum Parkii (Shea) Butter
- butter
- emollient
- sealant
-
14
Brassica Campestris (Rapeseed) Seed Oil
- oil
- emollient
-
15
Cocos Nucifera (Coconut) Oil
- oil
- emollient
-
16
Hippophae Rhamnoides Fruit/Seed Oil
- oil
- emollient
-
17
Sesamum Indicum (Sesame) Seed Oil
- oil
- emollient
-
18
Spirulina Platensis Extract
- botanical extract
-
19
Cocos Nucifera Water
- botanical extract
-
20
Emblica Officinalis Fruit Extract
- botanical extract
-
21
Curcuma Longa Root Extract
- botanical extract
-
22
Isododecane
- solvent
- emollient
-
23
Cetrimonium Chloride
- conditioning agent
- cleanser
- Below about this point, order stops being meaningful — these are typically used at 1% or less.
-
24
Ethylhexylglycerin
- preservative
- emollient
-
25
Ethyl Canolate
- light ester
- emollient
-
26
Neopentyl Glycol Diheptanoate
- light ester
- emollient
-
27
Lauryl Alcohol
- fatty alcohol
- emollient
-
28
Panthenol
- humectant
- conditioning agent
- vitamin
-
29
Tocopheryl Acetate
- antioxidant
- vitamin
-
30
Tocopherol
- antioxidant
- vitamin
-
31
Leuconostoc/Radish Root Ferment Filtrate
- preservative
-
32
Guar Hydroxypropyltrimonium Chloride
- conditioning agent
- polymer
- gum
-
33
Propanediol
- humectant
- solvent
-
34
Potassium Sorbate
- preservative
-
35
Sodium Benzoate
- preservative
-
36
Isopropyl Alcohol
- drying alcohol
- solvent
-
37
Malic Acid
- pH adjuster
- exfoliant
-
38
Citric Acid
- pH adjuster
- hard-water chelator
-
39
Phenoxyethanol
- preservative
-
40
Fragrance
- fragrance
- declared fragrance
-
41
Hydroxycitronellal
- fragrance
- named fragrance allergen
-
42
Benzyl Benzoate
- fragrance
- named fragrance allergen
-
43
Limonene
- fragrance
- named fragrance allergen
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.
Flash Instant Shine Mask
This flash-acting mask delivers brilliant moisture and shine in just 60 seconds.
SupportedHelps hair feel hydrated.62% more shine when used with mirrorball shampoo (clinically tested)
Stated by brandOnly the brand’s testing shows this.
Hydro Rush Intense Moisture Mask
Leaves hair hydrated for 5 straight days (clinically proven)
Stated by brandOnly the brand’s testing shows this.5x easier to comb (clinically proven)
Stated by brandOnly the brand’s testing shows this.5x more hydrated after one use (clinically proven)
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.
Both praised for shine. Amika Hydro Rush Intense Moisture Mask draws complaints about dryness.
Flash Instant Shine Mask
Several reviewers describe visible shine improvement from the very first use, treating it as an occasional 'best hair day' step rather than an everyday product.
repeat customers describing first-use resultsReviewers with fine, curly, or very long hair say the mask adds a strong salon-like shine without weighing hair down.
mixed hair-type reviewers on the brand's EU retail listingAt least one reviewer found it added gloss without meaningfully controlling frizz, needing a separate anti-frizz product on top.
a reviewer with frizz-prone hairHydro Rush Intense Moisture Mask
Users report shine, smoothness, healthy-looking manageable hair, and pleasant scent.
Lisa, official non-incentivized reviewOverall high satisfaction on brand DTC site
loveamika.com aggregate rating disclosed: 4.9/5 stars across 682 reviewsWavy and coily reviewers report soft hair, reduced frizz, and revived dry hair.
Kaitlin M, Brenda P, and Kathy C, official reviews; one incentivizedIndependent verified reviewers describe strong hydration and softness without weight, including on bleached coarse or 2C hair.
Imane, Sabby, and PiaHoa, Cult Beauty verified reviewsSome reviewers report limited benefit or no hydration and consider the mask overpriced.
e and BLr, Cult Beauty reviewsPrice 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.
Flash Instant Shine Mask
Against 347 masks and treatments 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.
Flash Instant Shine Mask · Hydro Rush Intense Moisture Mask · All masks and treatments 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.
- 10 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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