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The Theorem Method is a 3-part haircare system that offers a simple solution to healthier hair.
Our simple 3-part system offers lightweight, nourishing solutions that support healthy hair growth while mending
damaged, brittle hair. Resulting in thicker, longer, stronger, and healthier hair.

The Method

The Curly Method

The Blowout Method

Square Root

Volumizing Root Serum.

For Fine, Thinning Hair.

Density

Deep Conditioning Repair Mask.

For chemically treated, colored or heat damaged hair.

Sugar Pi

Damage Recovery Oil.

For dry, frizzy hair and split ends.

Infinity

Hydration Shampoo

For dry, damaged or frizzy hair

Infinity

Hydration Conditioner

For dry, damaged or frizzy hair

Infinity Duo

Hydration Shampoo & Conditioner

Volume

Texturizing Shampoo

For fine, thin or flat hair

Volume

Texturizing Conditioner

For fine, thin or flat hair

Volume Duo

Texturizing Shampoo & Conditioner

Belle Curve

Curl Cream

Enhance & define curls

Vector

Blowout Styling Balm

Eliminate frizz and protect from heat

Vector

Blowout Styling Balm

Eliminate frizz and protect from heat

Testimonials

Raquel S.

"Wow’d by the softness of my hair after using it once! "

Tiffany M.

"Smells amazing."

Jess V.

"Smells really good- love how my hair feels after one use."

Hannah L.

"I loved the way it feels on my hair. Super easy to brush through after the shower."

Alissa

"AMAZING PRODUCT! "

Valerie V.

"Loved it - using it since 03/2020"

Rebecca B.

"Loved it - using it since 03/2020"

Alex

"The smell was amazing! Hair was noticeably soothed."

Allison M.

"Loved the way the hair effortlessly blow dried out and have great shine."

Brooke D.

"My long hair is such a pain to brush and after one use I noticd it was smooth and much easier to comb through."

60-Days Guarantee

60-Days Guarantee

We have so much faith in our products that we offer a 60-day, no quibble, money-back guarantee. If you don’t love our products, just send it back to us for a full refund.

Shipping

Shipping

Once your order is confirmed shipped, you will receive your items in 5-7 business day.

Free Shipping

Free Shipping

Spend $65 or more
and shipping is on us!

60-Days Guarantee

60-Days Guarantee

We have so much faith in our products that we offer a 60-day, no quibble, money-back guarantee. If you don’t love our products, just send it back to us for a full refund.

Shipping

Once your order is confirmed shipped, you will receive your items in 5-7 business day.

Free Shipping

Spend $65 or more
and shipping is on us!

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Infinity Duo

TH13

Infinity Duo

Hydrating Shampoo & Conditioner

For dry, damaged or frizzy hair.

Description
Ingredients

Give your hair the quality of being infinitely shiny, hydrated, and soft with the Infinity shampoo and conditioner combo. Your hair will have boundless amounts of sparkle with this amazing shampoo and conditioner set. Say good-bye to frizz and hello to smooth, beautiful hair.

Shampoo
Ingredients: Water (Aqua), Coco-Betaine, Sodium Cocoyl Isethionate,Disodium Laureth Sulfosuccinate, Steareth-100/PEG-136/HDI Copolymer,Decyl Glucoside, Glycol Distearate, Sodium Chloride, Rosa DamascenaFlower Water, Glyceryl Oleate, Sodium Methyl-2 Sulfolaurate, Coco-Glucoside, Panthenol, Camellia Sinensis Leaf Extract, Galactoarabinan,Dicaprylyl Ether, Fragrance, Salvia Hispanica Seed Extract, Sodium LaurylSulfoacetate, Tocopherol, Guar Hydroxypropyltrimonium Chloride, TrisodiumSulfosuccinate, Quaternium-80, Polyquaternium-73, Glycerin,Hydroxyacetophenone, PPG-26-Buteth-26, Disodium 2-Sulfolaurate, PEG-40Hydrogenated Castor Oil, Phenoxyethanol, Caprylyl Glycol, Laureth-3, Trehalose, Xylitol, Citric Acid, Ethylhexylglycerin, Hexylene Glycol, SodiumIsethionate, Tetrasodium Glutamate Diacetate.

Conditioner
Ingredients: Water (Aqua), Cetearyl Alcohol, Glycerin, Cocos Nucifera(Coconut) Oil, Stearamidopropyl Dimethylamine, Behentrimonium Chloride,Amodimethicone, Coco-Glucoside, Rosa Damascena Flower Water,Panthenol, Glyceryl Oleate, Lactic Acid, Salvia Hispanica Seed Extract,Camellia Sinensis Leaf Extract, Hydroxyethylcellulose, Fragrance,Cetrimonium Chloride, Galactoarabinan, Phenoxyethanol, Polyquaternium-73, Ceteareth-20, Hydroxyacetophenone, Caprylyl Glycol, Isopropyl Alcohol,Trehalose, Xylitol, Ethylhexylglycerin, Hexylene Glycol, Tetrasodium Glutamate Diacetate, Citric Acid.

Optional Subscribe & Save!

Subscribe to a Monthly Subscription which enrolls you as a Theorem VIP Customer
Save 10% on today’s order + Save 10% on all future orders. You can cancel anytime.

$00.00

QTY:

100% Satisfaction Guaranteed. Free Shipping on Orders over $65

Dermatologist Tested

Dermatologist Tested

Vegan

Vegan

Gluten-Free

Gluten-Free

No Animal Testing

No Animal Testing

How does it work?

Dry, damaged, and frizzy hair all have one thing in common, lack of hydration. Give your hair the quality of being infinitely shiny, hydrated, and soft with Theorem’s Infinity shampoo and conditioner. Your hair will have boundless amounts of sparkle and bounce from the sealed in moisture. Say good-bye to frizz and hello to smooth beautiful hair.

Before and After

Testimonials

Raquel S.

"Wow’d by the softness of my hair after using it once! "

Tiffany M.

"Smells amazing."

Jess V.

"Smells really good- love how her hair feels after one use."

Hannah L.

"I loved the way it feels on my hair. Super easy to brush through after the shower."

Alissa

"AMAZING PRODUCT! "

Valerie V.

"Loved it - using it since 03/2020"

Rebecca B.

"Loved it - using it since 03/2020"

Alex

"The smell was amazing! Hair was noticeably soothed."

Allison M.

"Loved the way the hair effortlessly blow dried out and have great shine."

Brooke D.

"My long hair is such a pain to brush and after one use I noticd it was smooth and much easier to comb through."

60-Days Guarantee

60-Days Guarantee

We have so much faith in our products that we offer a 60-day, no quibble, money-back guarantee. If you don’t love our products, just send it back to us for a full refund.

Shipping

Shipping

Once your order is confirmed shipped, you will receive your items in 5-7 business day.

Free Shipping

Free Shipping

Spend $65 or more
and shipping is on us!

60-Days Guarantee

60-Days Guarantee

We have so much faith in our products that we offer a 60-day, no quibble, money-back guarantee. If you don’t love our products, just send it back to us for a full refund.

Shipping

Once your order is confirmed shipped, you will receive your items in 5-7 business day.

Free Shipping

Spend $65 or more
and shipping is on us!

Discover More

The Curly Method

The Blowout Method

Belle Curve

Curl Cream

Enhance & define curls

Vector

Blowout Styling Balm

Eliminate frizz and protect from heat

The Method

Square Root

Volumizing Root Serum.

For Fine, Thinning Hair.

Density

Deep Conditioning Repair Mask.

For chemically treated, colored or heat damaged hair.

Sugar Pi

Damage Recovery Oil.

For dry, frizzy hair and split ends.

Infinity

Hydration Shampoo

For fine, thin or flat hair.

Infinity

Hydration Conditioner

For dry, damaged or frizzy hair

Infinity Duo

Hydration Shampoo & Conditioner

Volume

Texturizing Shampoo

For fine, thin or flat hair.

Volume

Texturizing Conditioner

For dry, damaged or frizzy hair

Volume Duo

Texturizing Shampoo & Conditioner

Infinity Duo

SKU: TH13

Category: All

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Infinity Duo sales price
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$59.98 effective price you save
$6.00 UCV
41.98 lblUPV
59.98 Tracking Credits Shelf Life (Days)

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