Hair care guides

Six short reads on what helps in everyday hair care: porosity, PEH, INCI ingredient lists, oiling, washing and too much protein. No rigid rules — the emphasis is on watching how your own hair responds.

• Hair porosity: what it is and how to really check it

  A useful clue about hair condition, not a verdict on every formula

• Protein moisture balance in hair: proteins, emollients and humectants (PEH)

  How to read proteins, emollients and humectants without rigid rules

• Hair oiling: how to do it, which oil to use and what a pre-poo is

  What oils can do before and after washing, and how much to use

• How to read an INCI ingredient list on shampoo and conditioner

  What ingredient order tells you — and what it cannot reveal

• Protein overload in hair: signs, causes and how to fix it

  How to test your hair's response without guessing from one sign

• How often to wash your hair, and how to do it well

  How to choose frequency, shampoo and safe scalp cleansing

• Clarifying shampoo vs chelating shampoo: what they do and when to use them

  When to reach for clarifying or chelating shampoo, and how often