Hair Growth Serum, Explained
What Makes a Hair Growth Serum Actually Work
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's scalp serum is formulated.
Shop the Scalp SerumA Senolytic Active
ETERWELL™ clears senescent (aged) cells from the follicle bulge — the cellular buildup that shortens the growth phase over time. Most serums only address surface hydration, not this root cause.
A Studied Concentration
Redensyl® is used here at 3%, the concentration used in the manufacturer's own clinical testing. Concentration and sourcing matter as much as the ingredient name.
Follicle-Level DHT Inhibition
Serevelle™ Topical works at the scalp directly, delivering DHT inhibition at the dermal papilla — complementary to an oral DHT blocker, not a replacement for one.
A Formula You'll Actually Use Daily
Lightweight, fast-absorbing, no rinse required. The best-studied actives don't work if the texture stops you from applying it every day.
Serum vs. oral supplement: why not both?
- A serum acts locally, at the follicle — fast to apply, but limited to what reaches the scalp surface
- An oral supplement works systemically, blocking DHT production throughout the body, not just at the scalp
- Used together, they cover both the internal hormone pathway and the external follicle environment
- Consistency matters more than which one you pick — daily use for 90+ days is what the hair cycle requires
See exact doses for every active in the serum on our ingredient glossary.
Hair growth serum — frequently asked questions
What ingredients should a hair growth serum actually contain?
Look past the marketing name and check the ingredient list for a senolytic active (clears aged cells from the follicle bulge), a clinically-studied concentration — not just a named ingredient — and a topical DHT inhibitor for follicle-level coverage. FLOTE RADIANCE's serum pairs ETERWELL™, Redensyl® at 3%, Serevelle™ Topical, and COLHIBIN™ CB, which inhibits MMP-1 to protect the scalp's collagen matrix.
Does a hair growth serum actually work?
It depends on the actives and their concentration, not the word "serum." Many serums are lightly-fragranced moisturizers with no clinically-studied concentration of active ingredients. A serum formulated at studied concentrations, used daily across a full hair cycle (about 90 days), is a different product than a cosmetic moisturizer.
How is a hair growth serum different from an oral supplement?
A serum acts locally at the follicle — fast to apply, but limited to what reaches the scalp surface. An oral supplement works systemically, addressing the DHT pathway throughout the body. Used together, they cover both the internal hormone pathway and the external follicle environment.
How often should I apply a hair growth serum?
Daily, consistently, for the full length of a hair growth cycle — roughly 90 days. A lightweight, fast-absorbing formula that doesn't require rinsing makes daily use realistic; a serum you skip half the time won't show what the actives can do.
What is Redensyl® and why does the concentration matter?
Redensyl® is a patented complex studied for supporting hair follicle stem cell activity. FLOTE RADIANCE uses it at 3%, matching the concentration used in the manufacturer's own clinical testing — a lower, undisclosed concentration on a competing label may not deliver the same studied effect.
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