
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
USDStandard 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.


