Last updated: March 2026
This website (skin-insights.co) is operated by Cultur3 Numomo AG (CHE-400.275.415), Talbachstrasse 2, 8418 Schlatt ZH, Switzerland. Rolf is the person behind the book and the content on this site.
This site offers a free chapter from Skin Overdraft, a book about evidence-based skincare. You can sign up with your email to receive the chapter and occasional updates about the book.
The content is educational — it is not medical advice. Consult a dermatologist for medical decisions.
When you sign up, you agree to receive emails related to the book (chapter delivery, launch updates, and a short follow-up sequence). You can unsubscribe at any time using the link in every email. Unsubscribing is immediate.
The chapter is a free lead magnet. No purchase is required to access it. No refund policy applies — there is nothing to refund.
We may ask for your feedback on book concepts or titles. Participation is voluntary. Your responses may be used in aggregate to inform book development. Individual responses are anonymized after the test period.
All content on this site — including the book chapter, text, and graphics — is owned by Cultur3 Numomo AG. You may share links and quote short excerpts with attribution. You may not republish full content or use the Skin Overdraft name in a way that implies endorsement.
The content on this site is provided as-is. We do our best to present accurate, evidence-backed information, but we make no guarantees about completeness or accuracy. Clinical research evolves.
Nothing on this site constitutes medical advice, diagnosis, or treatment.
To the maximum extent permitted by law, Cultur3 Numomo AG is not liable for any damages arising from your use of this site or its content. This includes direct, indirect, incidental, and consequential damages.
This site may link to external sites. We do not control those sites and are not responsible for their content, privacy practices, or availability.
These terms are governed by the laws of Switzerland. Any disputes will be resolved in the courts of the Canton of Zurich, Switzerland.
We may update these terms occasionally. The date at the top of this page shows when they were last revised. Continued use of the site after changes constitutes acceptance of the updated terms.
For legal questions: legal@rolfskincare.com. For everything else: rolf@rolfskincare.com.