Hair Growth Serum: What to Look For
Topical hair serums range from lightly-fragranced moisturizers to clinically-dosed follicle treatments. Here's what the ingredient list should say — and how FLOTE RADIANCE approaches its scalp serum.
The Short Answer
A hair growth serum is a topical formula applied directly to the scalp — designed to act at the follicle level rather than working systemically like an oral supplement. The category spans single-active hydrating serums to multi-active formulas built around senolytic, DHT-modulating, and circulation-supporting ingredients.
FLOTE RADIANCE's serum lists every active with its exact concentration and clinical source, and pairs it with an oral blend for a two-pronged, follicle-level and inside-out approach.
What to Look For in a Hair Growth Serum
A Senolytic Active
ETERWELL™ targets senescent (aged) cells in the follicle bulge — cellular buildup linked to a shortening growth phase over time. Most serums only address surface hydration, not this layer.
A Studied Concentration
Concentration matters as much as the ingredient name — a 3% dose of an active like Redensyl® is a different product than a trace amount used for the label claim.
Follicle-Level DHT Support
Ingredients like Procapil® work at the scalp directly, supporting hair anchoring and microcirculation — complementary to an oral DHT-modulating supplement, not a replacement for one.
A Formula You'll Actually Use Daily
Lightweight, fast-absorbing, no rinse required. The best-studied actives don't help if the texture stops daily application.
As with any topical product, discontinue use and consult your healthcare provider if irritation occurs.
Hair Growth Serums: How FLOTE RADIANCE Is Labeled
| Attribute | FLOTE RADIANCE | Common in the category |
|---|---|---|
| Active concentration disclosure | Every topical active is listed with its exact percentage concentration — e.g., Redensyl® 3%, AnaGain™ 2–4%, Serevelle™ Topical 2%. | Leading competitor serums generally list their ingredients by name without publishing a percentage concentration for each active. |
| Senolytic ingredient | ETERWELL™ HAIR targets senescent (aged) cells in the follicle bulge. | Widely sold serums are typically built around plant-exosome technology, or around caffeine, biotin and signal peptides. A dedicated senolytic active is rare in this category. |
| DHT-pathway support at the scalp | Serevelle™ Topical (2%), a saw-palmetto-derived extract, for follicle-level DHT inhibition. | Neither serum's headline actives target the DHT pathway directly at the scalp. |
| Paired oral system | Sold and formulated together with a matching thirteen-active oral blend. | Oral supplements are usually sold separately from the serum, as standalone products rather than a matched system. |
The right-hand column describes patterns common across publicly published serum labels, reviewed August 2026.
Hair Growth Serum — Frequently Asked Questions
What makes a hair growth serum "clinically dosed" vs. just moisturizing?
The ingredient list disclosing an exact percentage concentration for each active, not just a name. FLOTE RADIANCE lists every topical active — Redensyl® 3%, AnaGain™ 2–4%, Serevelle™ Topical 2%, GHK-Cu, ETERWELL™ — at its dosed concentration.
Do hair serums disclose their ingredient concentrations?
Mostly not. Widely sold serums — whether built on plant-exosome technology or on caffeine, biotin and signal peptides — typically list their ingredients by name in INCI order without publishing a percentage for any of them, so you can see what is in the bottle but not how much.
What is a senolytic ingredient, and why does it matter for a scalp serum?
Senolytic actives target senescent ("aged") cells that build up in the follicle bulge over time — a layer most hydration-focused serums don't address. FLOTE RADIANCE's serum includes ETERWELL™ HAIR for this purpose.
Should a hair growth serum be used with an oral supplement?
Topical actives work at the follicle; oral actives work systemically. FLOTE RADIANCE's serum is formulated to pair with its oral blend for both mechanisms at once, rather than being sold as a single-format product.
What is the best hair growth serum?
The right serum depends on what you want it to do — hydrate, target DHT at the scalp, or address senescent-cell buildup. FLOTE RADIANCE's serum discloses an exact concentration for each of its actives, including a DHT-pathway ingredient (Serevelle™ Topical) and a senolytic active (ETERWELL™ HAIR).
See the Full FLOTE RADIANCE Formula
A nine-active topical serum, paired with a thirteen-active oral blend — every ingredient listed with its exact dose and clinical source.