Posted by Saphira Greenberg
on September 28, 2026
Frizz isn't a styling problem. It's a moisture problem, and understanding that distinction changes what you actually do about it.
What's really happening when hair frizzes
Hair is porous, and its outer cuticle layer naturally wants to absorb whatever moisture is in the air around it. When the air is more humid than the hair itself, water molecules push into the strand, swelling it and lifting the cuticle. That lifted cuticle is what reads as frizz. The more porous or damaged the hair, the faster this happens, and the harder it is to control with styling alone.
Why smoothing products only work halfway
Serums and creams that sit on top of the cuticle can slow this exchange temporarily, but they don't change how porous the hair actually is underneath. That's why frizz-control products often stop working by midday in real humidity: the surface layer wears off, and the same absorption problem starts again.
Addressing frizz at the source
The more effective approach works on the hair shaft itself. Hyaluronic acid binds moisture into the cortex on the hair's own terms, so the strand isn't as reactive to humidity swings in the first place. Diamond powder physically smooths the cuticle layer, reducing the surface area available for humidity to grab onto. Both work together in our Mineral DeFrizz Collection.
What actually holds up in humidity
- Hydrate the cortex first. A strand that's already holding adequate moisture is less likely to keep absorbing more from the air.
- Smooth the cuticle, don't just coat it. Physical smoothing agents reduce surface friction and frizz-prone lift.
- Reapply strategically, not constantly. Targeting roots and regrowth, where new hair hasn't been treated, matters more than reapplying over already-smoothed lengths.
