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Does heat protectant still work on day 2, or do you need to reapply?
Heat protectant stays on your hair until your next wash, but the film wears down from brushing, sleeping and sebum. That's why you apply a fresh thin layer before every...
Is air-drying really better for your hair than blow-drying?
Air-drying isn't automatically safer: your hair stays swollen and vulnerable for hours, and in lab research it was actually air-drying that damaged the glue layer inside the hair fibre. Here's...
Why is the top layer of my hair drier and more damaged than the layer underneath?
The top layer of your hair didn't grow differently, it has simply had far more sun, friction and heat than the hairs underneath. Here's exactly where that difference comes from...
Does heat protectant need to dry before you start styling?
With a straightener or curling iron, let your heat protectant dry first: water in your hair boils inside the hair fibre and lowers the temperature at which keratin breaks down....
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,...
What are those white dots in my hair, and does heat styling cause them?
White dots along the length of your hair are usually trichorrhexis nodosa: spots where the hair fibre frays from friction and pressure. Here's how to tell them apart from dandruff,...
How thick should a section of hair be when you style it with heat?
A section of hair should be no more than about 1 cm thick and no wider than your plates or curling barrel. Find out why section thickness matters more than...
How long does it take for heat damage to grow out of your hair?
Heat damage doesn't heal: damaged hair has to grow out and be cut off. With growth of 1 to 1.25 cm per month, count on roughly one month per centimetre...
