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What does the cool shot on your hairdryer actually do, and when should you use it?
The cool shot on your hairdryer does not close any cuticles: it cools your hair down so the shape you just created sets. Read what cool air does and does...
Krijg je haaruitval van hitte stylen, of is het haarbreuk?
Hitte stylen geeft bijna nooit echte haaruitval, maar wel haarbreuk: de haarwortel zit beschermd onder je huid. Zo zie je aan één haartje of het is afgebroken of uitgevallen, en...
Does a bond builder like Olaplex or K18 really repair heat damage?
Bond builders like Olaplex and K18 target broken sulphur bonds, but heat damage consists of five different types of damage. Here's what you can repair, what you can't, and how...
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....
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,...
