Hair serums with the weight printed on the bottleFree shipping over $45All prices in USD
Northline
Frizz Control Serum — Built for humidity, and heavy enough to survive it

Frizz Control Serum

Built for humidity, and heavy enough to survive it

Weight 4 of 5 · Medium

On wash day, or as needed

You will feel this one on the strand. Mid-lengths and ends only, on medium to thick hair — or on fine hair as a wash-day treatment and nothing more.

Suits thick / coarse, curly / coily hair at this frequency. Find your ceiling.

$30.00

USD
1

Standard shipping $4.95, free over $45. Arrives in 3–5 business days. 45-day returns.

The one product in the range we made heavy on purpose. Frizz in real humidity is a losing fight for a light formula, so this one carries enough ester and butter to hold a cuticle flat through a summer afternoon.

The cost is on the label: weight 4. On fine hair this is a wash-day product and nothing more, and on very fine hair it is the wrong product entirely — SR-01 will do less but will not flatten you.

Weight 4. Medium to coarse hair, mid-lengths and ends, on damp hair before drying.

The ingredient record

Everything in this formula, stated plainly, and the reasoning behind the number on the bottle. The same record is printed on the insert in the box.

Weight
4 of 5 — Medium
Frequency
On wash day, or as needed
Ingredients (INCI)
Aqua (Water), Coco-Caprylate/Caprate, Cetearyl Alcohol, Behentrimonium Methosulfate, Butyrospermum Parkii (Shea) Butter, Isoamyl Laurate, Glycerin, Hydroxypropyl Guar Hydroxypropyltrimonium Chloride, Panthenol, Tocopherol, Citric Acid, Sodium Benzoate, Potassium Sorbate.
Size
50 ml / 1.7 fl oz — pump bottle
Net weight
55 g
Texture
Rich cream-serum. Soft, slightly weighted finish.
Made
Formulated and filled in the United States.

How to use

  • One to two pumps for medium hair, three for coarse or curly.
  • Apply to soaking-wet hair, in sections, then dry without disturbing it.
  • Do not rake it through once the hair has dried — that is what puts the frizz back.

Cautions

  • Not for fine hair on consecutive days. At weight 4 it will read as greasy by the second morning.
  • Not for the root, on any hair type.
  • Contains shea butter. Avoid if you react to it.

Shipping

$4.95 standard, free over $45. 3–5 business days. Full policy

45 DAYS

Returns

Unopened and in original packaging, or opened if it caused a reaction. Refunded within 5 business days of reaching us. Full policy

Questions about this product

hello@northlinehair.comEvery message answered within one business day.

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