FAQ

Are Polyquaterniums bad for my hair?
According to the Cosmetic Ingredient Review - Polyquaternium-7 and Polyquaternium-10 are safe as used in cosmetics and personal care products.

Are they silicones?
No, these polymers are not silicones. Polyquats are film-forming by nature, which means they will effectively coat the hair - blocking humidity, preventing frizz, and providing curl defining/retention.

Can you use them on all hair types?
You can use both Polyquaternium 7 and 10 on all hair types. However, like with most things, these are best not used in excess as they might build up on the hair, everyone is different so it’s best to try it out and see if it works for you.

References

https://cosmeticsinfo.org/ingredient/polyquaternium-10-0
https://cosmeticsinfo.org/polymers
https://www.lookchem.com/product_Polyquaternium-7
https://www.lookchem.com/product_Polyquaternium-10
https://chemistscorner.com/what-is-polyquaternium/