Cash In

Significantly reduce breakage and repair damage at the source with this high-powered restorative serum. Boosted with clean, clinically-proven Vegan Silk and Biomimetic Bond-Building Technology to reduce breakage and increase strength from the inside out. A highly-concentrated, silicone-free serum that provides 11x softer* strands, with 88% split end sealing and 450°F degree heat protection.
In stock

What it is
This clinically-proven treatment serum significantly repairs damage and reduces breakage.* Concentrated, lightweight formula features biomimetic bond-building technology to instantly moisturize, mend split ends, provide softness and shine, and protect from heat damage.
Key Benefits
  • Color Care Color Safe
    Color Care Color Safe
  • Heat Protectant
    Heat Protectant
  • Lightweight Weightless
    Lightweight Weightless
  • Safe For Chemically Treated Hair
    Safe For Chemically Treated Hair
  • Shine
    Shine
Who it's best for
  • Straight
  • Wavy
  • Curly
  • Coily
How to use
Apply generously to hair. Follow with styler.
Key Ingredients
  • Vegan Silk Extract
    Vegan Silk Extract

    vegan protein derived from fermentation biotechnology that supports hair strength by forming a physical yet breathable layer of protection and support (Ingredient sourced from biotechnologically derived silk proteins.)

  • Biomimetic Bond Building Technology
    Biomimetic Bond Building Technology

    naturally-derived peptide (aka a protein building block) that repairs and reseals damaged hair, restoring the look and feel of shiny, smooth, healthy tresses.

  • Baobab Oil
    Baobab Oil

    extracted from the “Tree of Life,” this oil restores moisture, strength, and reflective shine.

  • Amla Oil
    Amla Oil

    naturally derived from Indian gooseberry for deep moisture and to help seal the cuticle.

- Instantly repairs and protects against breakage*
- Boosted with Biomimetic Bond-Building Technology
- Significantly repairs damage from mechanical, chemical, and heat damage
- Hair feels 11x softer*
- Seals 88% of split-ends and protect from 450°F heat**
*When used as a system of Pay Day Instant Repair Shampoo, Conditioner and Cash In Instant Repair Serum vs control

  • Water (Aqua/Eau)
  • Propanediol
  • Hydroxyethylcellulose
  • Dicaprylyl Ether
  • Adansonia Digitata Seed Oil
  • sr-Spider Polypeptide-1
  • Orbignya Oleifera Seed Oil
  • Salvia Hispanica Seed Extract
  • Brassica Campestris (Rapeseed) Seed Oil
  • Emblica Officinalis Fruit Extract
  • Sesamum Indicum (Sesame) Seed Oil
  • Cetearamidoethyldiethonium Succinoyl Hydrolyzed Pea Protein
  • Opuntia Ficus-Indica Fruit Extract
  • Sodium Formate
  • Saccharomyces Cerevisiae Extract
  • Phenoxyethanol
  • Decyl Glucoside
  • Heptyl Glucoside
  • Glyceryl Oleate
  • Polyquaternium-73
  • Cetrimonium Chloride
  • Panthenol
  • Ethylhexylglycerin
  • Glycerin
  • Citric Acid
  • Benzoic Acid
  • Tetrasodium Glutamate Diacetate
  • Leuconostoc/Radish Root Ferment Filtrate
  • Sodium Benzoate
  • Heptanol
  • Tocopherol
  • Sodium Hydroxide
  • Sodium Glycolate
  • Potassium Sorbate
  • 1,2-Hexanediol
  • Fragrance (Parfum)
  • Caprylyl Glycol
Videos
average rating 4.9 out of 5
Based on 8 reviews
  • 5 Stars
    7 Reviews
  • 4 Stars
    1 Review
  • 3 Stars
    0 Reviews
  • 2 Stars
    0 Reviews
  • 1 Star
    0 Reviews
100% of reviewers would recommend this product to a friend
Results
Rated 4 out of 5
8 Reviews
Reviewed by Randi S.
Verified Buyer
I recommend this product
Age Range
55 - 64
Hair Description
  • Wavy
  • Color-Treated
  • Thick
Product Standouts
  • Adds Shine
  • Reduces Frizz
  • Smooths
Rated 5 out of 5
Review posted

Great product

Used couple times and makes a difference

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Results
Rated 4 out of 5
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IGK Hair

Thanks for taking the time to share your feedback, Randi!

Reviewed by Pamela H.
Verified Buyer
I recommend this product
Age Range
45 - 54
Hair Description
  • Wavy
  • Dry
Rated 5 out of 5
Review posted

Very silky

Leaves hair soft and silky but tames frizz

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Results
Rated 5 out of 5
Was this helpful?

IGK Hair

Thanks for sharing your feedback, Pamela!

Reviewed by SUSAN F.
Verified Buyer
I recommend this product
Age Range
45 - 54
Hair Description
  • Damaged
  • Color-Treated
  • Chemically-Treated
  • Dry
Product Standouts
  • Detangles
  • Conditions Well
  • Good For Dry Hair
  • Moisturizes
  • Smells Great
Rated 5 out of 5
Review posted

Love this stuff!!

Makes my hair feel silky and so manageable! And a little really goes a long way

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Rated 5 out of 5
Was this helpful?

IGK Hair

Thanks for your feedback, Susan!

Reviewed by Violet F.
Verified Buyer
I recommend this product
Age Range
55 - 64
Hair Description
  • Thin
  • Wavy
  • Color-Treated
Product Standouts
  • Gentle
  • Adds Shine
  • Good For Dry Hair
  • Reduces Frizz
  • Softens Hair
Rated 5 out of 5
Review posted

Violet

Love

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Results
Rated 5 out of 5
Was this helpful?

IGK Hair

Thank you for your feedback, Violet!

Reviewed by brittany t.
Verified Buyer
I recommend this product
Age Range
25 - 34
Hair Description
  • Thin
  • Color-Treated
Product Standouts
  • Conditions Well
  • Smooths
  • Smells Great
  • Reduces Frizz
  • Adds Shine
Rated 5 out of 5
Review posted

Love this product

Love love love this product its light weight smells great and leaves my hair looking and feeling amazing

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Rated 5 out of 5
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IGK Hair

Hi Brittany! Thanks so much for leaving a review for Cash In!

Reviewed by Mercedes D.
Verified Buyer
I recommend this product
Age Range
55 - 64
Hair Description
  • Curly
  • Color-Treated
  • Coarse
  • Dry
Product Standouts
  • Detangles
  • Curl Friendly
  • Good For Dry Hair
  • Moisturizes
  • Reduces Frizz
Rated 5 out of 5
Review posted

Light Serum Fights Frizziness and Dryness

The front part of my hair is very dry and high porosity. In the past I have relied on heavier primers and leave ins because I end up with very frizzy hair that stands on end in front if I use a lighter leave in . (No really...the hair on the back looks like it belongs on a different head.) This is a very nice serum. I completely coats the hair and gives it a decent slip without being heavy. I didn't end up using a lot either and considering its cost, that's a good thing. I use this and followed it up with the Good behavior primer

and a light cult gel and its banished the frizz for 2 days so far, even though I don't do much more than re-wet my curls in the morning so I don't look like Medusa.

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Rated 5 out of 5
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IGK Hair

Thanks for your feedback, Mercedes! We're so happy to hear you love Cash In as much as we do 😍

Reviewed by Alyssa T.
Verified Buyer
I recommend this product
Age Range
35 - 44
Hair Description
  • Chemically-Treated
  • Color-Treated
  • Thick
  • Damaged
  • Wavy
Product Standouts
  • Conditions Well
  • Good For Dry Hair
  • Strengthens
  • Smooths
  • Smells Great
Rated 5 out of 5
Review posted

Love It

First of all, it smells amazing. Sometimes scents really turn me off of products, this isn’t one of those. It’s not overwhelming. Secondly, it works really well from what I can tell. My hair is umm damaged, chronic hot tool and bleach user here… it has helped keep it smooth and feeling stronger. It’s not quite a a serum like the cry baby is but once you rub it in your palms it thins out so you can use it similarly.

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Results
Rated 5 out of 5
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Reviewed by Kay T.
Verified Buyer
I recommend this product
Age Range
65+
Hair Description
  • Wavy
  • Damaged
  • Chemically-Treated
  • Thin
  • Dry
Product Standouts
  • Good For Dry Hair
  • Strengthens
  • Reduces Frizz
  • Moisturizes
  • Gentle
Rated 4 out of 5
Review posted

Quality equals Cash In!

Seems to help with hair appearance & looks thicker , only reason not five stars, too use to rate, only used twice

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Results
Rated 4 out of 5
Was this helpful?

IGK Hair

Thanks for your feedback, Kay! We're so happy to hear you love Cash In! 💜

CRUELTY FREE
No animals were harmed. Ever.
Gluten-Free
No traces of wheat anywhere.
Vegan
No harsh, harmful chemicals.
CRUELTY FREE. GLUTEN-FREE. VEGAN