October 2023 in “International journal of research in dermatology” Mintop shampoo improved hair smoothness, shine, and strength after ten washes.
January 2011 in “Journal of Society of Cosmetic Chemists of Japan” 18-MEA and SPDA can restore damaged hair's smoothness and reduce frizz.
July 2007 in “International Journal of Cosmetic Science” The new polymer improves dyed hair's color, moisture, shine, and smoothness.
July 2024 in “Journal of Cosmetic Dermatology” Vegan collagen builder improves hair growth, skin smoothness, and reduces wrinkles and pain.
7 citations,
August 2018 in “Journal of cosmetic dermatology” Chemical hair straightening improves smoothness and shine but may cause side effects, suggesting a need for safer methods.