Maybe your scalp is itchy and irritated—or perhaps you’re simply trying to get ahead of future hair loss or graying. Whatever brought you here, you’re far from alone. Hair supplements and preventative treatments are now firmly mainstream; I personally know plenty of guys in their mid-twenties who already take hair-loss pills, and there’s absolutely no shame in that.
But if swallowing yet another daily supplement doesn’t sound especially appealing, or if you’re trying to attack this thing on all fronts, we hear you. That’s where scalp serums come in. Think of scalp serum as skincare for your head and hair.
It’s a lightweight, leave-in treatment designed to support a healthier scalp and create better conditions for stronger-looking hair. Depending on the formula, serums may use ingredients such as peptides, niacinamide, hyaluronic acid, and botanical extracts to moisturize dry skin, calm irritation, or help hair look fuller and more resilient. They’re not miracle cures, and not everyone will have the same reaction to every product, but they can certainly be a useful, low-effort addition to your grooming routine.
Even if you’re already taking a hair-growth supplement, there are serums that work in tandem with those to give your hair that extra boost it needs to look fuller and healthier. In fact, using supplements that work to block DHT (a hormone that shrinks hair follicles) and topical serums hand in hand is a pretty common approach. To help you find the right scalp serum for you, we rounded up the best ones on the market.
Nécessaire’s scalp serum is one of the best things you can use to not only improve the density and strength of your hair but also support your overall scalp health. The serum’s active ingredient is a peptide called Capixyl, which helps your hair grow thicker and more dense, and it also has a bit of hyaluronic acid in there to help keep your scalp hydrated. Plus, vitamins B3 (niacinamide) and B5 help strengthen the scalp’s protective barrier by locking in moisture, reducing irritation, and repairing damage to the skin’s outer layer.
While this serum can’t actually revive dead or dormant hair follicles, meaning it won’t help with hair regrowth, it can successfully reduce shedding and strengthen existing strands. But if you combine this serum with a hair-regrowth treatment, it can make for a successful holistic approach. Like I mentioned earlier, many hair growth supplements and other treatments are formulated to block the formation of DHT, the potent androgen hormone that causes hair loss from shrinking hair follicles over time, causing the hair growth cycle to shorten and eventually leading to hair loss.
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