Act+Acre 4% Niacinamide Oily Scalp Serum

Act+Acre

4% Niacinamide Oily Scalp Serum

scalp serum

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19
Ingredients
5
Benefits
3
Actives
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Treat your scalp to the ultimate TLC with Act+Acre's 4% Niacinamide Oily Scalp Serum (65ml) Designed to extend time between washes, this innovative formula calls on the powers of an antioxidant-rich hyper-fermented green tea blend alongside 4% niacinamide to reduce and balance excess oil. It doesn't stop there; it's also bursting with bio-fermented astragalus to soothe and increase hyaluronic acid for a moisturised scalp. Non-greasy and fast absorbing, this super serum is sure to become a go-to staple in your everyday hair routine...

Key Insights

Haircare

5
Contains humectants Lightweight Moisturizing Silicone-free Sulfate-free

Active Ingredients

3
AHA Hyaluronic acid Vitamin B3 (niacinamide)

What this product is

Written from the ingredient list. Where it describes how a formula behaves, that is inferred from what the ingredients are and where they sit in the list, not measured.

Overview

4% Niacinamide Oily Scalp Serum is a serum from Act+Acre, aimed at fine hair, straight hair and wavy hair. On the evidence of its ingredient list, the formula works on moisture, frizz control and scalp soothing. The ingredients doing most of that work are Pentylene Glycol, Propanediol and Niacinamide. The list runs to 19 ingredients, 7 of which carry a role we recognise for hair.

How it feels on hair

The formula reads as lightweight: humectants lead and there is little in the way of heavy oil or silicone, so it should not weigh fine hair down. There are no silicones in the list. The formula leans to moisture rather than protein.

On the scalp

For the scalp itself the formula carries Niacinamide and Lactic Acid.

Build-up and porosity

Nothing in the list is the kind of ingredient that accumulates on hair. It suits low porosity in particular.

Where it goes

It is a treatment step: after shampooing, left on, then rinsed out. On a clean damp scalp, apply 2-3 pipettes. Massage into scalp evenly. Leave on and do not rinse.

What it is not for

Nothing in this formula is aimed at protein & strength, volume / lightweight, curl definition and color protection — not a fault, just the shape of what is in the bottle, and the reason one product rarely covers a whole routine. No ingredient here is one we recognise as supporting hair growth. Reducing breakage and growing hair are different things, and this formula's evidence is for the first.

In short

Working for it

  • No sulfate detergents
  • No silicones
  • Fits the Curly-Girl method
  • Nothing that builds up between washes
  • Light enough for fine hair
  • Suitable for colour-treated hair
  • Fragrance-free

What it is

Serum Repairing

Who it suits

Read from the formula's weight, its build-up and its protein — not from a claim on the packaging.

Suits

Fine hair Straight hair Wavy hair

Take care with

Coarse hair

What it works on

Moisture Frizz control Scalp soothing Oil control

Not what this one is for

Protein & strength Volume / lightweight Curl definition Color protection Damage repair Build-up avoidance Shine

Nothing in this formula is one we recognise as supporting hair growth. Reducing breakage and growing hair are different claims.

Cleansing agents

Sulfate-free.

Silicones

Silicone-free.

Build-up and weight

Estimated from which ingredients are present and how high they sit in the list, not measured.

Reads as a lightweight formula.

Nothing here accumulates on hair.

Porosity

Inferred from the formula's weight, humectants and protein.

Low porosity Suits

Cuticles are tight; moisture penetrates poorly.

Medium porosity Suits

Cuticles are moderately open; moisture is absorbed well.

High porosity Neutral

Cuticles are open; moisture absorbs fast but is also lost rapidly.

Curly-Girl method

Fits the method: no sulfates, no persistent silicones, no drying alcohol.

On the scalp

Sensitive scalp Oily scalp

Where it goes on wash day

  1. Shampoo
  2. Conditioner
  3. Treatment
  4. Leave-in
  5. Oil

Composition claims

"Free from" is only claimed when every ingredient on the label resolved to one we know.

Fragrance-free No drying alcohol Paraben-free Silicone-free Microplastic-free Sulfate-free Dye-free

Safety

No ingredient in this formula is flagged in our pregnancy database. That is not medical advice — ask your doctor about anything you are unsure of.

What the formula is made of

One ingredient usually does several jobs, so these counts add up to more than the list length.

7 of 19 ingredients carry a role we recognise for hair.

Humectant · 5 Exfoliant · 1 Scalp Active · 1

Questions

What ingredients are in 4% Niacinamide Oily Scalp Serum?

WATER, PENTYLENE GLYCOL, PROPANEDIOL, NIACINAMIDE, GLYCERIN, CAMELLIA SINENSIS LEAF EXTRACT, LACTITOL, XYLITOL, SODIUM GLUCONATE, SODIUM HYALURONATE, LACTIC ACID, CAPRYLHYDROXAMIC ACID, SACCHAROMYCES FERMENT LYSATE FILTRATE, SODIUM ANISATE, HYALURONIC ACID, CITRIC ACID, ASTRAGALUS MEMBRANACEUS ROOT EXTRACT, SODIUM BENZOATE, POTASSIUM SORBATE.

Is 4% Niacinamide Oily Scalp Serum sulfate free?

Yes. There is no sulfate detergent anywhere in the ingredient list.

Is 4% Niacinamide Oily Scalp Serum silicone free?

Yes. There are no silicones in the ingredient list.

Is 4% Niacinamide Oily Scalp Serum Curly-Girl friendly?

Yes. The list carries no sulfate detergent, no non-water-soluble silicone and no drying alcohol, which are the three the method excludes.

What hair type is 4% Niacinamide Oily Scalp Serum for?

By the weight and build-up of the formula it reads as suited to fine hair, straight hair, wavy hair. It may be less comfortable on coarse hair.

Does 4% Niacinamide Oily Scalp Serum contain protein?

No. There is no hydrolyzed protein or amino acid in the ingredient list.

Does 4% Niacinamide Oily Scalp Serum cause build-up?

Nothing in the list is the kind of ingredient that accumulates on hair.

Is 4% Niacinamide Oily Scalp Serum good for a sensitive scalp?

It carries scalp-soothing ingredients and no harsh detergent.

Is 4% Niacinamide Oily Scalp Serum safe for colour-treated hair?

Nothing in the formula is the kind of ingredient that strips colour, and it carries conditioning ingredients that help it hold.

Where does 4% Niacinamide Oily Scalp Serum go in a haircare routine?

After shampooing: leave it on, then rinse it out.

Is 4% Niacinamide Oily Scalp Serum fragrance free?

Yes. No fragrance or declared fragrance allergen appears in the list.

Who makes 4% Niacinamide Oily Scalp Serum?

Act+Acre.

Brand
Act+Acre

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