The Zenvy Journal

Curl science,
tested and written down.

Practical guides for every curl pattern, plus the product testing behind what we stock. Written in the UK, for UK water, weather and hair.

2 articles · Guides & Research · Updated May 2026

Coily (4A / 4B / 4C) Hair: The Type 4 Care Foundation

4A, 4B and 4C kept distinct — coil diameter in millimetres, shrinkage by sub-pattern, the LOC vs LCO decision tree, and the type 4 wash-day routine.

2 articles

From 2A loose waves to 4C tight coils — the complete curl type chart with millimetre diameters, an at-home test,...