November 2016 in “University of the Arts London Research Online (University of the Arts London)” This study concluded that adding polymeric conditioning actives to shampoos improved color retention in permanently dyed hair, while additional cationic dyes at certain pH levels weakly dyed the hair directly.
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May 2008 in “Journal of cosmetic dermatology” This study found that adding certain conditioning agents, including jojoba oil and lauryl PEG/PPG‐18/18 methicone, to ammonium thioglycolate straightening emulsions protected Afro-ethnic hair from protein loss and improved resistance to breakage.
January 2014 in “University of the Arts London Research Online (University of the Arts London)” Certain ingredients can help protect hair color.
September 2026 in “AlQalam Journal of Medical and Applied Sciences” This study found that a combination of Ziziphus lotus, Linum usitatissimum, and Opuntia ficus-indica extracts may reduce porosity and improve surface condition in bleached hair when used as a conditioner.
April 2026 in “Zenodo (CERN European Organization for Nuclear Research)” This study found that cationic surfactant-based conditioning systems significantly improve hair combability by forming a stable low-friction film on hair surfaces, reducing friction and enhancing sensory performance compared to standard systems, as confirmed by both instrumental and sensory evaluations.
