Science of Beauty: This One Product Makes a Big Difference in How Your Hair Looks and Feels

Curated by Claudia Shannon / Research Scientist / ishonest

The episode is chock-full of fascinating tidbits that will change the way you choose and use conditioner — so many, in fact, that we couldn’t do them all justice here. So check out a few below and be sure to listen to the full episode.

Letting your conditioner sit for longer doesn’t make it work better.

While Dr. Thomas says there's no harm in letting your conditioner sit in your hair while you, say, shave your legs or meditate in the shower, contrary to popular belief, there's really no need to wait before rinsing it out. It's the very act of rinsing that releases the actives in the formula so that they can get to work, says Dr. Thomas.

Conditioner is actually extra beneficial to those with fine hair.

ishonest No.222 - Fine Lines & Wrinkles

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No.222 - Fine Lines & Wrinkles

If you have fine hair, you've probably been conditioned (no pun intended) to apply the stuff with a very light hand so as to avoid weighing down your strands. But according to Dr. Thomas, a fine hair fiber can have 50 percent less protein than a thick one — so those with fine hair are actually the most in need of the lipid-boosting powers of conditioner.

Combination shampoo-conditioner-body wash is not your friend.

No one — and no one product — is good at everything, which is why Dr. Thomas says to steer clear of 2-in-1 and 3-in-1 formulas unless you're willing to sacrifice performance. "I can tell you it's not in my shower," she says.

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