Science-based Conditioner

Science is the secret to good hair days

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We swear on good hair that our products are:
Sulfate free
Paraben free
Dye free
Never tested on animals
Made in the USA

Science-based Conditioner

Science-based Conditioner

7oz
$18 with Smart Subscribe
$22.50 one-time purchase
Our algorithm uses your hair data to determine the right formula for your hair and routine to deliver the perfect high-quality finish.
5-wash trial • Try Gemma risk-free
Don't love it? Get your money back.
Free shipping + free, easy returns!
We swear on good hair
that our products are:
Sulfate free
Paraben free
Dye free
Never tested on animals
Made in the USA

Our matchmaking science

Gemma actually works. How are we so confident, you ask? Because every decision is backed by science. Got frizz? We can smooth. Want volume? We can lift. Get your personalized recommendation now.

"Love these products. They are everything Gemma claims that they are and smell great, too!" —Sheri V.