Hair serums with the weight printed on the bottleFree shipping over $45All prices in USD
Northline

Everything

The whole catalog

23 products, each with a weight rating from 0 to 5, the full ingredient list, the strength of the key ingredient, the fill size and net weight, how often to use it and who it is not for.

Filter by weight first. If you already know your ceiling — 2 for fine hair, 3 for medium, 4 for thick, 5 for curly — it is the fastest way to see only what will actually work on your hair.

All prices are shown and charged in US Dollars (USD).

Weight
Step
Made with

23 products

Daily Wash — Sulphate-free, colour-safe, unscented
CL-01Weight 0

Daily Wash

Sulphate-free, colour-safe, unscented

$22.00

Clarifying Wash — Once a month, and we mean once
CL-03Weight 0

Clarifying Wash

Once a month, and we mean once

$22.00

Daily Conditioner — Slip, and then nothing left behind
CN-01Weight 0

Daily Conditioner

Slip, and then nothing left behind

$22.00

Bond Repair Wash — The bond complex, in the step you never skip
CL-02Weight 0

Bond Repair Wash

The bond complex, in the step you never skip

$24.00

Scalp Exfoliant — Lifts flaking and build-up. Nothing more than that
SC-01Weight 0

Scalp Exfoliant

Lifts flaking and build-up. Nothing more than that

$28.00

Heat Shield Spray — Rated to 450°F, and light enough to use every day
ST-01Weight 1

Heat Shield Spray

Rated to 450°F, and light enough to use every day

$26.00

Weightless Smoothing Serum — The one fine hair can actually wear
SR-01Weight 1

Weightless Smoothing Serum

The one fine hair can actually wear

$28.00

Colour Guard UV Serum — Slows how fast the sun takes your colour out
SR-07Weight 1

Colour Guard UV Serum

Slows how fast the sun takes your colour out

$30.00

Scalp Comfort Serum — For the tight feeling after a hard wash
SC-02Weight 1

Scalp Comfort Serum

For the tight feeling after a hard wash

$30.00

Bond Repair Serum — For hair that has been bleached, coloured or over-heated
SR-04Weight 1

Bond Repair Serum

For hair that has been bleached, coloured or over-heated

$36.00

The Fine Hair Week — Everything at weight 1 or under. Nothing that can flatten you
RT-01Routine · tops out at 1

The Fine Hair Week

Everything at weight 1 or under. Nothing that can flatten you

$84.00

Texture Spray — Grip and volume without the crunch
ST-02Weight 2

Texture Spray

Grip and volume without the crunch

$24.00

Leave-In Milk — Detangles, and stops there
CN-04Weight 2

Leave-In Milk

Detangles, and stops there

$26.00

Glass Shine Serum — Mirror finish, and the build-up that comes with it
SR-02Weight 2

Glass Shine Serum

Mirror finish, and the build-up that comes with it

$30.00

Protein Strength Serum — Firmer-feeling hair, and a clear warning about overdoing it
Low stock
SR-08Weight 2

Protein Strength Serum

Firmer-feeling hair, and a clear warning about overdoing it

$32.00

Bond Repair Mask — Ten minutes, once a week, on hair that has had a hard year
CN-02Weight 2

Bond Repair Mask

Ten minutes, once a week, on hair that has had a hard year

$34.00

The Repair Week — The bond complex in all three steps it belongs in
RT-02Routine · tops out at 2

The Repair Week

The bond complex in all three steps it belongs in

$86.00

Styling Cream — Light hold, no shine, no residue at the root
ST-03Weight 3

Styling Cream

Light hold, no shine, no residue at the root

$26.00

Squalane Hair Oil — One oil, olive-derived, nothing else added
SR-03Weight 3

Squalane Hair Oil

One oil, olive-derived, nothing else added

$32.00

Frizz Control Serum — Built for humidity, and heavy enough to survive it
SR-05Weight 4

Frizz Control Serum

Built for humidity, and heavy enough to survive it

$30.00

Deep Moisture Mask — The heavy end of the conditioning range
CN-03Weight 4

Deep Moisture Mask

The heavy end of the conditioning range

$34.00

The Curl Week — The top of the weight scale, used the way it is meant to be
RT-03Routine · tops out at 4

The Curl Week

The top of the weight scale, used the way it is meant to be

$92.00

Overnight Repair Oil — The heaviest thing we make, and it washes out in the morning
SR-06Weight 5

Overnight Repair Oil

The heaviest thing we make, and it washes out in the morning

$34.00