Products are split into three levels based on ingredient labels
K18 BIOMIMETIC HAIRSCIENCE
Last verified: March 9, 2026
Leave-In Molecular Repair Hair Mask by K18 BIOMIMETIC HAIRSCIENCE has been evaluated by Million Marker and contains ingredients with known health concerns. This product is rated STOP, indicating higher concern.
We recommend avoiding STOP-rated products and seeking safer alternatives from our GO or SLOW categories.
