Sajic Skin Science · Guides

Science-led guides for skin, longevity, and dermatology.

A library of dermatologist-authored longform guides from Dr. Dusan Sajic, MD, PhD — covering preventative skincare, longevity medicine, post-procedure recovery, and the science behind every Sajic formulation. Most guides take 5–11 minutes to read.

Skincare Science

How aging works at the cellular level — and what to actually do about it.

Treatment Guide
Skin Quality Treatment Guide
Firmness, surface evenness, tone, and glow — the dermatologist roadmap with devices, ingredients, and Sajic protocols.
7 min readRead →
Framework
Modern Skin Health & Prevention Framework
Testing-based dermatology you can measure. How Dr. Sajic tracks skin health — and why skincare should be accountable.
6 min readRead →
Treatment Guide
PIH & PIE: Post-Inflammatory Marks
Brown and red marks after acne, irritation, or procedures. Topicals, oral TXA, vascular lasers — the full protocol.
7 min readRead →
Founding Essay
How To Look And Age Better In 2026
The Four D's: Deflation, Deceleration, Descent, Diet. A founder's guide to total anti-aging by Dr. Dusan Sajic.
9 min readRead →

Skin Cancer & Preventative Oncology

Field cancerization, fractional CO₂, and the spectrum of prevention tools.

Newsletter
The Skin Cancer You Never See Coming
Field cancerization, the treatment spectrum, and why depth is the variable that matters. AMWC + IMCAS research.
11 min readRead →
Clinical Guide
Fractional CO₂ Laser Guide
Depth-calibrated field reset, 30–50% density, post-laser recovery protocol with Rejuvenat® and Protectif®.
9 min readRead →

Longevity Medicine

Peptides, hormones, GLP-1s — physician-prescribed through Sajic Longevity Clinic.

Now Live
Peptide Therapy, Personalised
Sermorelin, CJC-1295, BPC-157, MOTS-c. 503A/503B pharmacy network. All 50 US states.
9 min readRead →
Prevention Pathway
GLP-1 Medications & Facial Aging
A 5-step science-based prevention pathway for GLP-1 face. Start early, treat smart, don't over-correct.
5 min readRead →

Procedures & Safety

Botox, lasers, and the safety questions patients actually ask.

Patient Safety
Botulinum Toxin & Your Brain
What the research actually says about Botox cognitive safety. 31 peer-reviewed studies, plainly explained.
8 min readRead →

All guides are educational and do not constitute medical advice. For personalised recommendations, book a virtual consult through Sajic Longevity Clinic — available in all 50 US states.