Its action is based on oils: grape seed, soybean, cotton, and hemp. Trust My Sister Serum For Hair Ends High Porosity Hair Step 4 40ml is intended for the care of high porosity hair. It aids in the elimination of frizzy and excessively falling out hair strands. smoothes, nourishes, moisturizes, and regenerates instantly. It also keeps the ends safe from splitting and crushing. The strands are soft, shiny, and restent after use.