Protein and moisture: finding your balance
Protein builds structure. Moisture restores flexibility. Your hair needs both, but the right ratio depends on your hair's current state, and getting it wrong in either direction causes problems.
Hair is made primarily of keratin, a protein. When hair is damaged, whether from heat, chemical processing, or mechanical stress, the protein structure degrades. This makes the cuticle rough and the strand weak.
Protein treatments work by temporarily filling gaps in the cuticle and reinforcing the strand's structure. This is useful for chemically treated or heat-damaged hair, which has genuinely lost protein.
Moisture, in the form of humectants and emollients, restores the hair's ability to flex without snapping. Well-moisturised hair stretches slightly before breaking. Hair that snaps immediately often needs moisture.
Protein sensitivity is real. If you experience increased brittleness, stiffness, or breakage after using protein-heavy products, your hair is likely reacting to excess protein. This is more common in low-porosity hair, which has a tightly closed cuticle and can become overloaded more easily.