Start with high-confidence skin conditions books, then narrow by subgenre or adjacent topics.
The Eczema Diet
Karen Fischer
The Holistic Psoriasis Management and Nutrition Guide
Dr. Maria R. Robinson MD, Dr. Mamina Turegano MD
No-nonsense Skincare
Erum N. Ilyas, Erum Ilyas
The Beauty Geek's Guide to Skin Care
Deborah Burnes
The Psoriasis Diet Cookbook
Kellie Blake RDN LD IFNCP, Kellie Blake
Skintelligent
Dr. Natalia Spierings, Natalia Spierings
Eczema Detox