A comprehensive guide to repairing compromised skin barriers caused by high-concentration acids, chemical peels, and retinoids. This article explores epidermal physiology, transepidermal water loss, and inflammation control. It outlines principles for formulating with skin-identical lipids, including ceramides, phytosterols, and essential fatty acids. Features three step-by-step DIY formulations complete with thermal management standards, pH adjustment guidelines, and cold storage conditions.

A practical formulation guide dedicated to creating custom skincare for the delicate eye area. This article breaks down periorbital skin physiology, expression lines, and puffiness. It covers the principles of combining muscle-relaxing peptides with barrier-repairing ceramides, phytosterols, and low-molecular hyaluronic acid. Features three detailed DIY recipes complete with thermal control instructions, phase addition sequences, precise pH balancing, and storage guidelines.

A detailed guide to peptide classification and integration in custom skincare. This article explores the biological functions of signal peptides, matrix repair complexes, copper tripeptides, and neurotransmitter-inhibiting peptides. It covers chemical compatibility rules, highlighting interactions to avoid with low-pH acids and direct L-ascorbic acid. Includes three comprehensive DIY serum recipes featuring phase addition standards, precise pH management, sanitation, and cold storage rules.