Redensyl steckt in vielen Haarseren und Tonika und wird gern als Alternative zur Haartransplantation beworben. Was der Wirkstoff ist, was seine Studie tatsächlich zeigt – und wie Sie Produkte damit einordnen.
ARBUTI Hair Salon · Aktualisiert Oktober 2026
Was ist Redensyl?
Redensyl ist ein Rohstoff, den Kosmetikhersteller in Seren, Tonika und Shampoos einsetzen – kein eigenes Produkt. Er besteht aus zwei pflanzlich abgeleiteten Molekülen (DHQG, ein Abkömmling von Dihydroquercetin, und EGCG2, ein Abkömmling des Grüntee-Stoffs EGCG) sowie Glycin und Zink. Üblich sind Konzentrationen um 3 %.
Wie soll Redensyl wirken?
Laut Hersteller regt Redensyl Stammzellen in der äußeren Wurzelscheide der Haarwurzel an. Diese Zellen sind wichtig, damit ein Haar in die Wachstumsphase startet. Zusätzlich soll Redensyl Entzündungsprozesse an der Haarwurzel dämpfen. Ziel: mehr Haare im Wachstum, weniger im Ausfall.
Was die Studie wirklich zeigt
Pilotstudie des Rohstoffherstellers, Stand Oktober 2026.
Angaben laut Rohstoffhersteller
Teilnehmende
26 Männer mit mittlerem erblich bedingtem Haarausfall; 14 mit Redensyl, 12 mit Placebo
Dauer
84 Tage, Lotion mit 3 % Redensyl
Ergebnis
Mehr Haare in der Wachstumsphase, weniger im Ausfall als mit Placebo
Dazu kommen Laborversuche an einzelnen Haarwurzeln, in denen Redensyl gut abschnitt – teils besser als Minoxidil. Laborergebnisse lassen sich aber nicht einfach auf die Kopfhaut übertragen. Und die oft zitierten „bis zu 28.200 neuen Haare“ sind ein hochgerechneter Bestwert aus der Werbung, kein Durchschnitt.
So ordnen Sie Redensyl-Produkte ein
Konzentration
Seriöse Anbieter nennen sie. Die Studie wurde mit 3 % gemacht.
Form
Ein Serum oder Tonikum, das auf der Kopfhaut bleibt, ist sinnvoller als ein Shampoo, das nach Minuten ausgespült wird.
Versprechen
Vorsicht bei „ersetzt die Haartransplantation“ oder „besser als Minoxidil“ – das gibt die Studienlage nicht her.
Geduld
Wie bei jedem Mittel gegen Haarausfall: mindestens drei Monate.
Ein bekanntes Produkt mit Redensyl ist Panthrix. Einen Überblick über Seren mit und ohne Redensyl finden Sie in unserem Haarserum-Vergleich, den großen Vergleich bekannter Haarwuchsmittel unter Top 10 Haarwuchsmittel.
Unsere Empfehlungen
1
Unsere Empfehlung für die Kopfhaut
LADUTI Hair Serum
Ein Serum mit anderen Wirkstoffen: AnaGain™ und Procapil™. Abends aufgetragen, wirkt es über Nacht an der Kopfhaut – ohne Minoxidil, ohne Hormone, für Frauen und Männer. Zu AnaGain™ nennt der Rohstoffhersteller nach drei Monaten 78 % mehr Haare in der Wachstumsphase im Verhältnis zu ruhenden Haaren (20 Personen).
Spricht dafür
Zwei untersuchte Wirkstoffe
Einmal täglich, über Nacht
Hautverträglichkeit laut Dermatest® „sehr gut“
Zu bedenken
Studien zu den Einzelwirkstoffen, nicht zum fertigen Serum
Das lässt sich nicht sagen. Im Labor schnitt Redensyl gut ab, an der Kopfhaut gibt es nur eine kleine Studie. Minoxidil ist ein Arzneimittel und deutlich besser untersucht.
Hat Redensyl Nebenwirkungen?
Als Kosmetik-Wirkstoff gilt es als gut verträglich; Reizungen der Kopfhaut sind wie bei jedem Produkt möglich. Bei empfindlicher Kopfhaut testen Sie zuerst an einer kleinen Stelle.
Wie lange dauert es, bis Redensyl wirkt?
Die Studie lief 84 Tage. Planen Sie mindestens drei Monate regelmäßige Anwendung ein, bevor Sie Bilanz ziehen.
Hilft Redensyl auch beim Bart?
Es gibt Bartöle mit Redensyl. Untersucht wurde der Wirkstoff aber an der Kopfhaut, nicht am Bart.
Wir sind Friseure, keine Ärzte. Angaben nach Rohstoffhersteller und veröffentlichten Zusammenfassungen, Stand Oktober 2026. Bei plötzlichem oder starkem Haarausfall lassen Sie die Ursache bitte ärztlich abklären.
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