#alltheingredients: Quaternized lemon shine (Hydroxypropyltrimonium Lemon Protein)

I’ve shared this ingredient with you in a few posts –  creating shampoo bars from scratch, conditioners and cationic polymers, Q&A: Creating liquid volumizing shampoo? Part four – actives, and this one, Q&A: Creating conditioners that add volume and retain curls? Using conditioning agents that won’t weigh down hair – cationic polymers, and Q&A: What’s a…