Chemistry
Chemistry guide
What color chemistry changes in a hair fiber
A useful map of cuticle, cortex, pigment, pH, and oxidation—without pretending every kind of damage can be reversed.
The journalDesk 01 / Chemistry
Know what’s in the bowl.
Color, chemical services, and the questions worth asking before an appointment.
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3 in-depth guides + short field notes
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Chemistry
Workplace guide
How to read a salon Safety Data Sheet
Use the sixteen-section format to find hazards, exposure controls, first aid, and the exact product identity—then notice what an SDS cannot tell you.
Chemistry
Evidence guide
A better evidence check for smoothing services
Formaldehyde exposure and emerging glyoxylic-acid kidney reports are different evidence problems. Ask the product, process, and control questions for each.
Chemistry
The station note
Before the color, have the conversation.
The product, the history, the instructions: a better starting point for a color appointment.
Chemistry
Evidence brief
What’s behind a smoothing promise?
Start with the ingredients and the service conditions, then follow the evidence.
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