The Science of Skin & Hair: A Cosmetic Formulator’s Essential Guide

Welcome to The Science of Skin & Hair: A Cosmetic Formulator’s Essential Guide—your comprehensive resource for understanding how the skin and hair function, how they interact with cosmetic ingredients, and how to create formulations that truly deliver results.

Whether you’re an aspiring formulator, a skincare or haircare brand owner, or simply passionate about the science behind beauty products, this e-book will deepen your understanding of skin and hair biology so you can make more informed formulation decisions.

The world of cosmetic science goes far beyond choosing trendy ingredients—it requires a solid foundation in skin structure, hair composition, and how external factors impact their health. In this guide, you’ll learn:

✔ The anatomy of the skin & its barrier function—plus what truly affects hydration, ageing, and sensitivity.
✔ How hair grows, absorbs nutrients, and responds to treatments—including insights into hair porosity, damage, and scalp health.
✔ The role of the microbiome in skin & scalp health—and how probiotic skincare fits into formulation.
✔ The truth behind common skin and hair myths—so you can formulate with science, not misinformation.

By the end of this book, you’ll have a clear, science-backed understanding of skin and hair that will allow you to develop effective, targeted cosmetic formulations with confidence.