#1 Best Selling Scalp Growth Serum Our Stem Cell Serum harnesses the power of plant cell culture technology, utilizing Swiss Apple Stem Cells (2%). Benefits: Promotes and extends the growth phase Lessens hair loss, thinning, and fall-out Soothes and hydrates the scalp Clinical Study Results 91% agree scalp feels nourished 89% agree their scalp looks healthier 89% agree improves overall health of hair