The Powder Lab

The Powder Lab

Haircare research, recs and vibes. Plus some travel beauty inspo for good measure.

TOPICS: It's ScienceJetset ReadyFor EarthHair Vibes

April 25, 2026

How Often Should You Wash Your Hair? A Guide by Hair Type

How Often Should You Wash Your Hair? A Guide by Hair Type

Hair washing frequency is one of the most common haircare questions — and one of the most inconsistently answered. Standard advice tends to collapse into ...

April 22, 2026

How to Use Conditioner the Right Way — And How Much You Actually Need

How to Use Conditioner the Right Way — And How Much You Actually Need

Most people apply too much, in the wrong place, and rinse too fast. Here's what the science says about conditioning — and how concentrated formulas ch...

April 14, 2026

How Much Shampoo Should You Actually Use?

How Much Shampoo Should You Actually Use?

Most people use two to three times more shampoo than necessary — not because they're careless, but because the standard advice was written for the wrong fo...

December 23, 2025

Is Winter Weather Damaging Your Hair?

Is Winter Weather Damaging Your Hair?

Cold air, indoor heating, hats, and scarves put the hair fiber under stress in ways most people don't notice until the damage is done. Here's what's actually...

July 02, 2025

Why Is My Hair Greasy? The Science of Oily Scalp and How to Break the Cycle

Why Is My Hair Greasy? The Science of Oily Scalp and How to Break the Cycle

Squeaky clean hair isn't a sign of cleanliness — it means your hair's lipid layer has been stripped. Here's what truly clean hair actually feels like, and wh...