Short answer: scalp serums don't grow new hair, but a well-formulated one can measurably improve how your existing hair looks and feels. Here's what's actually in a scalp serum, what the ingredients can (and can't) realistically do, and how to use one so you don't waste weeks on the wrong routine.
What's actually in a scalp serum
Most cosmetic scalp serums, including our Scalp & Root Serum, are built around a small set of conditioning actives rather than a single "miracle" ingredient:
Procapil is a cosmetic complex (biotinoyl tripeptide-1, apigenin and oleanolic acid) marketed as a scalp-conditioning complex. It's a cosmetic ingredient, not a registered therapeutic drug — it supports the look and feel of the scalp, it doesn't treat a medical condition.
Biotin (vitamin B7) is a cofactor in keratin production. Topically, it's used in haircare to help support the hair's structural protein and is widely used in daily haircare.
Keratin is the structural protein hair is made of. Applied topically, it works similarly to how keratin treatments condition strands — filling in surface gaps so hair looks smoother, feels softer and reflects more light.
Panthenol (pro-vitamin B5) is a humectant that draws and holds moisture. On the scalp, it helps reduce the look of dryness and flaking; on hair, it coats the shaft for a smoother, less brittle feel.
What scalp serums can (and can't) do
This is the part most marketing skips. In Australia, any product that claims to promote hair growth or treat hair loss is legally classed as a therapeutic good, not a cosmetic — it has to be listed on the ARTG (Australian Register of Therapeutic Goods) and follow the Therapeutic Goods Advertising Code. A cosmetic scalp serum, by definition, doesn't make that claim.
What a cosmetic scalp serum realistically does: conditions the scalp and hair shaft, helps reduce the visible signs of dryness, and — because it supports the hair you already have (more shine, better texture) — can make hair look fuller and healthier over time. It isn't a substitute for a dermatologist consult if you're experiencing genuine hair loss or a scalp condition; that's a medical question, not a cosmetic one.
If a product promises to "regrow hair" or "stop hair loss" without being an ARTG-listed therapeutic good, that's a red flag worth taking seriously — see the TGA source linked below.
How to use a scalp serum for best results
- Apply to a clean, dry or towel-dried scalp — product absorbs better without a layer of oil or styling residue in the way.
- Massage it in, don't just drip it on. A minute or two of gentle massage with your fingertips helps distribute the product across the scalp rather than pooling at the roots of a few sections.
- Be consistent. Hair growth cycles run in months, not days — most people judge a leave-in scalp product too early. Give it 8–12 weeks of daily use before deciding whether it's working for you.
- Once a day is enough. Morning or night both work; pick whichever you'll actually stick to, since consistency matters more than frequency.
- Layer it first. Apply a scalp serum before any other leave-in products, oils or heat-styling protectants.
Frequently asked questions
Does it work for both men and women? Yes — the formula is unisex; the ingredients condition the scalp and hair regardless of hair type or gender.
When will I notice a difference? Individual results vary. Most people report the hair feeling less brittle and looking a little glossier within a few weeks, with the fuller-looking effect building gradually over 8–12 weeks of daily use.
Will it work on coloured or chemically treated hair? Yes. The formula is water-based and doesn't contain anything known to strip or fade colour, but as with any new product, patch-test first if your hair or scalp is sensitised from recent chemical treatment.
Can I use it with other hair products or oils? Yes — apply the serum to the scalp first and let it absorb before layering other leave-ins or oils on the lengths.
Can I use a scalp serum if I'm losing hair for a medical reason? A cosmetic serum conditions the scalp and the hair you have; it isn't a treatment for a diagnosed medical condition. If you're concerned about genuine hair loss, that's worth raising with a GP or dermatologist.
How is this different from a "hair growth" product? Products that claim to grow hair or treat hair loss have to be registered therapeutic goods in Australia. A cosmetic scalp serum like ours makes no such claim — it's positioned, and formulated, purely as a conditioning product.
Browse: our scalp and hair range.
Related reading
- How to Use a Scalp Serum: Application, Timing and What to Expect
- Do brow serums actually work?
- Brow serums in Australia: what to look for
- Do Lash Serums Actually Work? What the Science Says (2026)
- Prostaglandin-Free Lash Serums Explained: What the Ingredient List Actually Tells You