Non-Toxic Hair

Haircare with honest ingredient lists — from wash day to styling.

Mainstream haircare commonly uses harsh sulfate surfactants (SLS/SLES) that can irritate sensitive scalps, undisclosed synthetic fragrance, and — in some smoothing treatments — formaldehyde-releasing agents. None of this is necessary to get hair genuinely clean.

The products here have had their full ingredient lists reviewed against Sister's blocklist, with allergens and irritants flagged and transparency scored. If you have a sensitive scalp, start with fragrance-free formulas and gentler surfactants; shampoo bars are also a simple way to cut both packaging waste and filler ingredients.