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Does cold water really close your hair cuticles? Here's what actually happens
No: hair cuticles are dead keratin cells without muscles and don't respond to cold water. Water and pH move your cuticles, a cold rinse gave no extra shine in testing,...
Does the glass of water hair porosity test actually work?
No, the glass of water test does not measure your hair porosity: whether a strand sinks or floats comes down to surface tension and product residue. Here you'll read what...
