Theorem - Product Catalog - The Theorem Method
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Our Products.

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

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The Curly Method

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The Blowout Method

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Square Root

Volumizing Root Serum.

For Fine, Thinning Hair.

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Density

Deep Conditioning Repair Mask.

For chemically treated, colored or heat damaged hair.

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Sugar Pi

Damage Recovery Oil.

For dry, frizzy hair and split ends.

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Spectra

Blonde Boosting Shampoo

For blonde, highlighted or gray hair

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Spectra

Blonde Boosting Conditioner

For blonde, highlighted or gray hair

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Spectra Duo

Blonde Boosting Duo

For blonde, highlighted or gray hair

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Infinity

Hydration Shampoo

For dry, damaged or frizzy hair

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Infinity

Hydration Conditioner

For dry, damaged or frizzy hair

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Infinity Duo

Hydration Shampoo & Conditioner

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Volume

Texturizing Shampoo

For fine, thin or flat hair

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Volume

Texturizing Conditioner

For fine, thin or flat hair

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Volume Duo

Texturizing Shampoo & Conditioner

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Belle Curve

Curl Cream

Enhance & define curls

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Vector

Blowout Styling Balm

Eliminate frizz and protect from heat

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Vector

Blowout Styling Balm

Eliminate frizz and protect from heat

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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

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!

Spectra Purple Conditioner
TH17

Spectra Conditioner

Blonde Boosting Conditioner

For blonde and gray hair

  • Description
  • Directions
  • Ingredients

Hair that is bleached, blonde, highlighted and gray often lacks moisture. Enrich your color, eliminate brass, and get that salon-fresh style everyone loves. Brighten your locks and strengthen your hair. Say goodbye to dry, damaged hair with our special complex designed for bleached, gray and dry hair.

Apply to clean, wet hair. Massage well focusing on the middle and ends of hair. Leave on for 1-2 minutes. Rinse thoroughly.

Water (Aqua), Cetearyl Alcohol, Glycerin, Cocos Nucifera (Coconut) Oil, Behentrimonium Chloride, Amodimethicone, Trimethylsiloxyamodimethicone, Silicone Quaternium-13 Anthemis Nobilis Flower Extract, Linum Usitatissimum (Linseed) Seed Extract, Polyquaternium-10, Cetrimonium Chloride, Ceteareth-20, C11-15 Pareth-7, Polyquaternium-73, Tocopheryl Acetate, Sericin, Fibroin, Phenoxyethanol, Hydroxyacetophenone, Trideceth-12, Retiny Palmitate, Folic Acid, Caprylyl Glycol, Xylitol, Polyquaternium-7, Fragrance, C12-16 Pareth-9, Ext Violet #2 (CI 60730), Hydroxypropyl Starch Phosphate, Guar Hydroxypropyltrimonium Chloride, Ethylhexylglycerin, Hexylene Glycol, Citric Acid, Tetrasodium Glutamat Diacetate, Tocopherol, Hexyl Cinnamal, Linalool, Hydroxycitronellal.

Subscribe & Save Today!

Repeat after us, “I will never have a bad hair day again!”
Subscribe & Save today for 10% off your order + for future deliveries, amp up the volume for up to 20% off.

After your first Subscribe & Save order, you will receive:
10% Discount: 1 Product
15% Discount: 2 Products
20% Discount: 3+ Products The more you buy, the more you save! Add new products, edit or postpone an order at any time!

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

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

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!

Discover More

Square Root

Volumizing Root Serum.

Shop now

Sugar Pi

Damage Recovery Oil.

Shop now

Density

Deep Conditioning Repair Mask.

Shop now

The Method

Shop now

Volume Duo

Shop now

Volume

Texturizing Shampoo

Shop now

Volume

Texturizing Conditioner

Shop now

Infinity Duo

Shop now

Infinity

Hydration Shampoo

Shop now

Infinity

Hydration Conditioner

Shop now
Spectra Purple Conditioner
SKU: TH17
Category: All
item #
Spectra Purple Conditioner
sales price
$29.99
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$26.99
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$3.00
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20.99
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29.99
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