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Five Layers Deep: Scientific Theory to Professional Application by Tiara Jinka

Her Texture Professional Education

Five Layers Deep

Scientific theory translated into professional application.

Move beyond surface-level hair education. Explore the scalp, growth cycle, five-layer cuticle system, amino-acid blueprint, formulation principles, and real-world salon scenarios shaping textured-hair care.

Five Layers Deep is now available
The Foundation: scalp, growth, texture, and damage
Five Layers Deep: the complete cuticle system
The Chemical Blueprint: bonds and amino acids
The Principles of Formulation
Six real-world salon-chair scenarios